WO2011111119A1 - 断層撮像装置 - Google Patents
断層撮像装置 Download PDFInfo
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- WO2011111119A1 WO2011111119A1 PCT/JP2010/001788 JP2010001788W WO2011111119A1 WO 2011111119 A1 WO2011111119 A1 WO 2011111119A1 JP 2010001788 W JP2010001788 W JP 2010001788W WO 2011111119 A1 WO2011111119 A1 WO 2011111119A1
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- gantry
- chair
- angle
- imaging apparatus
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- 238000003384 imaging method Methods 0.000 claims description 109
- 238000002600 positron emission tomography Methods 0.000 description 56
- 239000003638 chemical reducing agent Substances 0.000 description 13
- 230000005855 radiation Effects 0.000 description 13
- 230000000694 effects Effects 0.000 description 11
- 229940121896 radiopharmaceutical Drugs 0.000 description 9
- 239000012217 radiopharmaceutical Substances 0.000 description 9
- 230000002799 radiopharmaceutical effect Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 6
- 238000013480 data collection Methods 0.000 description 5
- 230000003028 elevating effect Effects 0.000 description 5
- 208000019901 Anxiety disease Diseases 0.000 description 4
- 230000036506 anxiety Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000005251 gamma ray Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000002595 magnetic resonance imaging Methods 0.000 description 2
- 230000001141 propulsive effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/44—Constructional features of apparatus for radiation diagnosis
- A61B6/4429—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units
- A61B6/4435—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units the source unit and the detector unit being coupled by a rigid structure
- A61B6/4447—Tiltable gantries
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computed tomography [CT]
- A61B6/037—Emission tomography
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/04—Positioning of patients; Tiltable beds or the like
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/04—Positioning of patients; Tiltable beds or the like
- A61B6/0407—Supports, e.g. tables or beds, for the body or parts of the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/04—Positioning of patients; Tiltable beds or the like
- A61B6/0478—Chairs
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/04—Positioning of patients; Tiltable beds or the like
- A61B6/0487—Motor-assisted positioning
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/44—Constructional features of apparatus for radiation diagnosis
- A61B6/4476—Constructional features of apparatus for radiation diagnosis related to motor-assisted motion of the source unit
- A61B6/4482—Constructional features of apparatus for radiation diagnosis related to motor-assisted motion of the source unit involving power assist circuits
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/50—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications
- A61B6/501—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications for diagnosis of the head, e.g. neuroimaging or craniography
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G2210/00—Devices for specific treatment or diagnosis
- A61G2210/50—Devices for specific treatment or diagnosis for radiography
Definitions
- the present invention relates to a tomographic imaging apparatus that captures a tomographic image by inserting a subject into an opening of a gantry.
- the conventional tomographic imaging apparatus 201 has a cylindrical opening 202 into which the subject M is inserted, and a gantry 203 in which the central axis 202a of the opening 202 is disposed in the horizontal direction.
- a bed apparatus 205 having a top plate 204 for placing the subject M in a supine position and a top plate moving mechanism 207 for moving the top plate 204 in the vertical direction and the horizontal direction are provided.
- An example of the tomographic imaging apparatus 201 having such a configuration is a PET (Positron Emission Tomography) apparatus.
- the PET apparatus includes a multi-layer detector ring 213 provided with a multi-layer detector ring in which radiation detectors are arranged in a ring shape on the outer periphery of the opening 202 of the gantry 203.
- a multi-layer detector ring 213 provided with a multi-layer detector ring in which radiation detectors are arranged in a ring shape on the outer periphery of the opening 202 of the gantry 203.
- an operation of placing the subject M on the bed device 205 and inserting, for example, the head of the subject M into the opening 202 of the gantry 203 and aligning it with the imaging position is generally performed. It is done as follows. That is, first, as shown in FIG. 19, the top plate 204 of the bed apparatus 205 is lowered in the vertical direction, and the subject M is seated on the top plate 204 lowered to a low position. Then, as shown in FIG. 20, the subject M seated on the top 204 is placed in the supine position. As shown in FIG. 21, the top plate 204 on which the subject M is placed in the supine position is raised to the imaging height position in the vertical direction. As shown in FIG.
- the top 204 on which the subject M raised to the imaging height position is placed is moved in the horizontal direction, and the head of the subject M is inserted into the opening 202 of the gantry 203. And align with the effective field of view of the multilayer detector ring.
- an apparatus including a gantry main body and a bed apparatus capable of imaging a supine position and a sitting position is disclosed (for example, see Patent Documents 2 and 3).
- the gantry main body is rotatably supported by a support frame via a support shaft protruding from both upper ends thereof.
- the gantry body is configured to be rotated and fixed at a predetermined inclination angle by the driving means with the support shaft as a fulcrum.
- the bed apparatus includes a reclining mechanism and can set the subject in a supine position or a sitting position.
- the bed apparatus includes elevating means for supporting the bed main body so as to be movable up and down, and horizontal moving means capable of moving in the front-rear direction along the guide rail. That is, the bed main body is configured to move in the vertical direction and the horizontal direction.
- the gantry main body is rotatably supported by the elevating member via a tilt shaft (support shaft).
- a fan-shaped connecting gear is fixedly provided on the tilt shaft.
- the connecting gear is configured such that power is transmitted from the drive mechanism via a gear mechanism that raises and lowers the elevating member. That is, the gantry main body is configured to move up and down together with the elevating member, and the gantry main body is inclined by rotating the connecting gear as the elevating member is raised.
- the inspection table (bed device) is configured to move in the vertical direction and the horizontal direction.
- the conventional apparatus has the following problems. That is, as in the prior art, when imaging the subject while lying on the top, it is necessary to lower the top to a position where the subject can sit down. In addition, the subject must lie on a thin and narrow top, and the operator must be careful enough to ensure that the subject does not fall off the top. The same applies when the subject is lowered from the top after the examination. Further, it is desirable that imaging (examination) is performed in a posture that is easy for the subject. In addition, in the operation of inserting the subject into the opening of the gantry, it is necessary to move in the biaxial direction by raising the top plate in the vertical direction and then moving it horizontally into the opening of the gantry. It is difficult to remove and it takes time.
- the present invention has been made in view of such circumstances, and an object of the present invention is to provide a tomographic imaging apparatus that can perform imaging efficiently in a posture that is safe for a subject, easy in posture. .
- the present invention has the following configuration in order to achieve such an object. That is, the tomographic imaging apparatus of the present invention is arranged such that the central axis of the opening is inclined so that the opening faces obliquely downward, and is disposed obliquely below the gantry, and the center of the opening.
- a mounting table whose surface on which the subject is placed is inclined so that the axis and the body axis of the subject are parallel, and at least one of the gantry and the mounting table is driven, and the center of the opening
- An imaging position moving mechanism for inserting a subject into the opening parallel to the axis.
- the gantry is arranged with the central axis of the opening inclined so that the opening faces obliquely downward.
- the mounting table on which the subject is placed is arranged obliquely below the gantry, and the center axis of the opening of the gantry and the body axis of the subject placed on the mounting table are parallel to each other.
- the surface on which the subject of the mounting table is placed is inclined.
- the imaging position moving mechanism drives at least one of the gantry and the mounting table, and inserts the subject into the opening of the gantry in parallel with the central axis of the opening of the gantry.
- the central axis of the opening of the gantry, the body axis of the subject mounted on the mounting table, and the moving direction of the imaging position moving mechanism are arranged in parallel and inclined.
- the operation of inserting the subject into the opening of the gantry that is, the movement from the position at which the subject gets on and off to the imaging position can be directly moved in the uniaxial direction. Therefore, alignment can be performed easily.
- alignment can be performed easily, alignment can be performed in a short time. Therefore, imaging can be performed efficiently.
- movement in one axis direction is sufficient, there are few misaligned elements in alignment, so reproducibility is good and position accuracy is easily obtained.
- the mounting table when moving the mounting table, it is not necessary to bend down when aligning it visually as in the conventional apparatus, so that the operator can perform alignment with a comfortable posture.
- the surface on which the subject is placed is inclined and the placement surface is inclined, one end of the mounting table is closer to the floor, making it safer than conventional devices. A subject can be placed. Thereby, the burden of assisting the operator is reduced.
- the surface on which the subject is placed is inclined, imaging can be performed with the subject placed in a comfortable posture. Further, since the gantry and the mounting table are inclined, the installation area can be reduced.
- the configuration can be simplified, and thus the manufacturing cost can be suppressed.
- the operator moves the gantry to a position suitable for the operator before moving the mounting table on which the subject is mounted. It is possible to perform alignment with an easy posture.
- an example of the tomographic imaging apparatus of the present invention is that the gantry, the mounting table, and the imaging position moving mechanism are fixedly arranged at a preset angle. Therefore, since a structure can be simplified, manufacturing cost can be suppressed.
- An example of the tomographic imaging apparatus includes a support column that integrally supports the gantry, the mounting table, and the imaging position moving mechanism, and the gantry, the mounting table, and the imaging position moving mechanism. And an imaging angle changing mechanism that changes the angle with respect to the horizontal direction. Accordingly, the operator can select a posture such as a sitting position or a supine position suitable for imaging by changing the angles of the gantry, the mounting table, and the imaging position moving mechanism integrated by the imaging angle changing mechanism. . Moreover, since the angle of the mounting table can be selected, the subject M can be imaged in an easy posture.
- the angle of the gantry, the mounting table, and the imaging position moving mechanism is not changed individually, but the angle is changed in the integrated state, so that it is mounted on the central axis of the opening of the gantry and the mounting table.
- the body axis direction of the subject and the moving direction of the imaging position moving mechanism can be maintained in parallel. Therefore, it is possible to efficiently perform imaging such as easy alignment and a short time. Also, maintenance can be facilitated by changing the angle and lowering the gantry to a lower position.
- an example of the mounting table is a chair on which a subject is seated.
- a chair By using a chair as a mounting table, it is possible to make the subject sit in a posture, and since the backrest portion of the chair is inclined, it is possible to image the subject in a comfortable posture. . In addition, it is possible to get on and off the subject more safely. Therefore, the subject can safely get on and off without the assistance of the operator, and the burden on the operator can be reduced.
- An example of the mounting table is a top plate on which the subject is mounted. By using the top plate as the mounting table, it is possible to perform imaging with the posture of the subject extended.
- a chair angle changing mechanism that changes an angle between a backrest portion and a seat portion of the chair is provided, and the chair angle changing mechanism is configured so that the backrest portion is fixed to the fixed seat portion. It is preferable to perform an operation of tilting backward and an operation of raising it forward.
- the chair angle changing mechanism performs an operation of raising the backrest portion of the chair when the subject gets on and off the subject. Further, when imaging the subject, an operation of tilting the backrest portion of the chair at a predetermined angle is performed.
- the subject is an elderly person and the backrest portion of the chair has an angle
- the user may feel uneasy about sitting on the chair, and this anxiety can be resolved. That is, it is possible to safely get on and off the subject and to image the subject with a comfortable posture.
- a chair angle changing mechanism for changing an angle between a backrest portion and a seat portion of the chair
- the chair angle changing mechanism is configured so that the seat portion is fixed with respect to the fixed backrest portion. It is preferable to perform an operation of tilting the camera forward and an operation of raising the camera backward, and change the angle between the backrest and the seat according to the angle of the imaging angle changing mechanism.
- the chair angle changing mechanism raises the gantry or the like integrated by the imaging angle changing mechanism forward, the chair angle changing mechanism performs an operation of raising the seat backward with respect to the fixed backrest.
- the gantry or the like integrated by the imaging angle changing mechanism is tilted backward, an operation of tilting the seat portion forward with respect to the fixed backrest portion is performed. Thereby, it is possible to prevent the posture of the subject from becoming unstable, such as lifting the leg of the subject.
- the backrest portion of the chair is angled, there is a case where the user feels uneasy about sitting on the chair, and this anxiety can be resolved. That is, it is possible to safely get on and off the subject and to image the subject with a comfortable posture.
- the leg mounting unit angle changing mechanism further includes a leg mounting unit angle changing mechanism that changes an angle between a top plate body of the top plate and a leg mounting unit on which a leg of the subject is mounted. It is preferable to perform an operation of tilting the leg rest portion forward and an operation of raising the leg rest portion with respect to the fixed top plate body.
- the leg rest part angle changing mechanism performs an operation of tilting the leg rest part forward with respect to the fixed top board body, for example, the leg of the subject on the leg rest part. Change the angle so that the surface to be placed is horizontal.
- the tomographic imaging apparatus of the present invention preferably includes a thickness direction moving mechanism for moving the mounting table in the thickness direction of the subject mounted on the mounting table.
- a thickness direction moving mechanism for moving the mounting table in the thickness direction of the subject mounted on the mounting table.
- the gantry is for the head.
- the diameter of the opening part of a gantry can be made small, the number of radiation detectors arrange
- the installation area can be reduced.
- the central axis of the opening of the gantry, the body axis of the subject placed on the mounting table, and the moving direction of the imaging position moving mechanism are arranged in parallel to incline I am letting.
- FIG. 1 is a front view showing a schematic configuration of a head PET apparatus according to Example 1.
- FIG. It is a figure which shows the structure of a chair moving mechanism.
- It is a block diagram which shows the control system of PET apparatus for heads. It is a figure where it uses for description of the effect of the PET apparatus for heads concerning Example 1.
- FIG. It is a figure where it uses for description of the effect of the PET apparatus for heads concerning Example 1.
- FIG. It is a figure where it uses for description of the effect of the PET apparatus for heads concerning Example 1.
- FIG. It is a figure where it uses for description of the effect of the PET apparatus for heads concerning Example 1.
- FIG. It is a figure where it uses for description of the effect of the PET apparatus for heads concerning Example 1.
- FIG. It is a figure where it uses for description of the effect of the PET apparatus for heads concerning Example 1.
- FIG. It is a figure where it uses for description of
- FIG. 10 is a diagram for explaining an operation of an imaging angle changing mechanism according to a fourth embodiment.
- FIG. 1 is a side view showing a schematic configuration of the PET apparatus for head according to the first embodiment in a partial cross section
- FIG. 2 is a front view thereof
- FIG. 3 is a view showing a chair moving mechanism
- FIG. 4 is a block diagram showing a control system of the head PET apparatus.
- the head PET apparatus 1 includes a gantry 3, a chair 5 on which a subject M is seated, and a chair moving mechanism 7 that moves the chair 5 to an imaging position.
- the head PET apparatus 1 corresponds to the tomographic imaging apparatus in the present invention
- the chair moving mechanism 7 corresponds to the imaging position moving mechanism in the present invention.
- the gantry 3 is supported on both sides by a pair of support pillars 11 and is disposed obliquely above the chair 5.
- the gantry 3 includes a substantially cylindrical or polygonal cylindrical opening 9 that accommodates the head of the subject M.
- the central axis 9a of the opening 9 is inclined (for example, 45 degrees). That is, the entire gantry 3 is tilted on the side of the chair 5 on which the subject M is seated.
- a multilayer detector ring 13 is provided in which a ring detector in which a plurality of radiation detectors are arranged in a ring shape is formed in a multilayer in the axial direction. That is.
- a plurality of radiation detectors are provided so as to reliably surround the head of the subject M during imaging.
- the radiation detector includes, for example, a scintillator block, a light guide, and a photomultiplier tube (all not shown).
- the scintillator block is composed of a plurality of scintillators.
- the scintillator block converts ⁇ -rays generated from the subject to which the radiopharmaceutical has been administered into light, the light guide guides the converted light, and the photomultiplier tube photoelectrically converts it to output an electrical signal.
- the chair 5 includes a headrest 5a, a backrest 5b, a seat 5c, an armrest 5d, and a leg rest 5e.
- the chair 5 includes a mechanism that can adjust the position of the headrest 5a while keeping parallel to the central axis 9a of the opening 9 of the gantry 3 according to the sitting height of the subject M.
- the chair 5 is supported by the support base 15 via the chair moving mechanism 7, and the support base 15 is supported by the pair of support pillars 11. That is, the chair 5 is supported by the support pillar 11 via the chair moving mechanism 7 and the support base 15. Further, the chair 5 is disposed obliquely below the gantry 3.
- the surface of the chair 5 in contact with the subject M of the headrest 5a and the backrest 5b is such that the central axis 9a of the opening 9 of the gantry 3 and the body axis A of the upper body of the subject M seated are parallel to each other. It is arranged at an angle.
- the chair moving mechanism 7 drives the chair 5 in parallel with the central axis 9 a of the opening 9 of the gantry 3, and inserts and pulls out the head of the subject M into the opening 9 of the gantry 3. That is, the chair moving mechanism 7 is configured to move in only one axial direction in an oblique direction from the getting on / off position where the subject M gets on / off the chair 5 to the imaging position where the head of the subject M is accommodated in the opening 9. Is done. As illustrated in FIG. 3, the chair moving mechanism 7 includes a guide rail 17, a motor 19, a speed reducer 21, a screw shaft 23, and a connecting portion 25.
- a pair of guide rails 17 are provided on the support base 15 in parallel with the central axis 9 a of the opening 9 of the gantry 3.
- a connecting portion 25 connected to the chair 5 is supported so as to be movable along the guide rails 17 (in the direction of the arrows).
- a motor 19, a speed reducer 21, and a screw shaft 23 are configured such that the rotation of the motor 19 is transmitted to the screw shaft 23 via the speed reducer 21.
- the screw shaft 23 penetrates the inside of the connecting portion 25, and the penetrated portion is configured to mesh with the screw thread of the screw shaft 23. That is, when the motor 19 rotates forward and backward and the screw shaft 23 rotates via the speed reducer 21, a propulsive force is generated in the connecting portion 25. Therefore, the connecting portion 25 moves along the pair of guide rails 17.
- the head PET apparatus 1 includes a data collection unit 27 that collects emission data detected by the multilayer detector ring 13, and a PET reconstruction unit 29 that reconstructs the emission data collected by the data collection unit 27. ing.
- the head PET apparatus 1 includes a display unit 31 configured by a monitor or the like that displays a tomographic image or the like that has been reconstructed, and an input unit 33 that is configured by a mouse, a keyboard, or the like and an operator performs input settings. And a storage unit 35 that stores tomographic images and the like, a control unit 37 that is configured by a CPU and the like, and performs overall control to appropriately operate each component such as the chair moving mechanism 7 by executing various programs. It has.
- the subject M to which the radiopharmaceutical is administered is seated on the chair 5 of the PET apparatus 1.
- the chair 5 on which the subject M is seated is moved by the chair moving mechanism 7 in the body axis direction of the subject M, that is, parallel to the central axis 9 a of the opening 9 of the gantry 3.
- the subject M is moved to a position where the head of the subject M is accommodated in the opening 9 of the gantry 3, that is, to a position that falls within the effective visual field of the multilayer detector ring 13.
- detection of ⁇ rays emitted from the head of the subject M is performed.
- the annihilation ⁇ -ray pair released from the localized site of the radiopharmaceutical previously administered to the subject M is detected by the multilayer detector ring 13 provided on the outer periphery of the opening 9.
- the data collection unit 27 checks the position of the scintillator block of the radiation detector in which the ⁇ -ray is detected by the multilayer detector ring 13 and the timing of incidence, and uses two scintillator blocks that are opposed to each other across the subject M. Emission data sent only when ⁇ rays are incident simultaneously are determined as appropriate data.
- the data collection unit 27 treats the emission data sent at that time as noise instead of ⁇ rays generated by the disappearance of the positron, and determines the noise. Such as rejecting In this way, it can be seen that the radiopharmaceutical was localized on a straight line connecting the positions where two gamma rays were simultaneously detected in the multilayer detector ring 13.
- the emission data collected by the data collection unit 27 is sent to the PET reconstruction unit 29 as projection data.
- the PET reconstruction unit 29 reconstructs the projection data to obtain a tomographic image showing the distribution of the radiopharmaceutical in the subject M head.
- the obtained tomographic image is output to the display unit 31 or the like.
- the gantry 3 is arranged such that the central axis 9a of the opening 9 is inclined so that the opening 9 faces obliquely downward.
- the chair 5 on which the subject M is seated is disposed obliquely below the gantry 3, and the central axis 9 a of the opening 9 of the gantry 3 and the body axis 9 a of the subject M seated on the chair 5 are parallel.
- the headrest 5a of the chair 5 on which the subject M is seated and the surfaces of the backrest 5b that are in contact with the subject M are inclined.
- the chair moving mechanism 7 moves the chair 5 parallel to the central axis 9 a of the opening 9 of the gantry 3 and inserts the subject M into the opening 9 of the gantry 3. That is, the central axis 9 a of the opening 9 of the gantry 3, the body axis A of the subject M seated on the chair 5, and the moving direction of the chair moving mechanism 7 are arranged in parallel to incline them. . Thereby, the operation of inserting or pulling out the head of the subject M into the opening 9 of the gantry 3, that is, directly moving in a uniaxial direction between the position at which the subject M gets on and off and the imaging position. it can. Therefore, alignment can be performed easily.
- alignment can be easily performed, alignment can be performed in a short time. Therefore, imaging can be performed efficiently.
- movement in one axis direction is sufficient, there are few misaligned elements in alignment, so reproducibility is good and position accuracy is easily obtained. Further, since the movement in one axis direction is sufficient, the configuration can be simplified, and the manufacturing cost can be suppressed.
- the operator OP performs the alignment with the naked eye while bending down.
- the gantry 3 and the like are configured to be inclined and can be operated at an appropriate height for the operator, so that the operator OP can perform alignment with an easy posture. .
- the conventional apparatus is arranged so that the surface on which the top plate is placed is horizontal, the subject M has to lie on the top plate.
- the surface on which the subject M is placed is inclined, so that one end of the surface is close to the floor, the placement surface is inclined,
- the chair 5 it is easy and safe to get on and off the subject M.
- the subject M can get on and off safely without the assistance of the operator OP. That is, the burden on the operator OP can be reduced.
- the backrest part 5b of the chair 5 is inclined, the chair 5 can lean against the backrest part 5b, and the posture of the subject can be maintained. Therefore, it is possible to image the subject M with an easy posture.
- the gantry 3 and the like are arranged at an inclination, the installation area can be kept small.
- the gantry 3 is arranged so that the central axis 9a of the opening 9 of the gantry 3 is in the vertical direction, the above-described effects can be expected.
- a sufficient space between the gantry 3 and the chair 5 must be provided so that the subject M does not come into contact with the gantry 3 when getting on and off the subject M. Therefore, the gantry 3 is disposed at a high position. For this reason, the following drawbacks occur. That is, as shown in FIG. 7, when the chair 5 on which the subject is seated is moved up and down for alignment, the distance between the position at which the subject M gets on and off and the imaging position becomes longer, so that it takes time to move up and down. It will take.
- the operator OP looks up when performing the alignment, and thus the alignment is difficult. Further, since the imaging position is high, the subject M feels uneasy. Moreover, since the gantry 3 is arranged at a high position, maintenance is difficult.
- FIG. 8 it is conceivable to include a mechanism for raising and lowering the gantry 3 and a mechanism for raising and lowering the gantry 3 and the chair 5.
- the operator OP must bend down, so that it is difficult to align.
- the subject M is given a feeling of pressure.
- the gantry 3 has a larger weight difference than the chair 5, it takes time to move up and down.
- the gantry 3 and the chair 5 are moved up and down, similarly, it takes time to move the gantry 3 up and down, and the subject M may come into contact with the gantry 3 when the gantry 3 is not raised to the retracted position. .
- the gantry 3 when the gantry 3 is arranged so that the central axis 9a of the opening 9 of the gantry 3 is in the vertical direction, the surface of the backrest 5b of the chair 5 that contacts the subject M is vertical. Therefore, the subject M can consciously hold the upper body along the backrest portion 5b, but it is difficult to hold the subject M for a long time. That is, it is difficult to image the subject M with an easy posture.
- FIG. 9 is a side view of the schematic configuration of the head PET apparatus according to the second embodiment, partly in cross section.
- FIG. 10 is a diagram showing the configuration of the gantry moving mechanism from the direction of reference sign V in FIG. Note that the description of the same components as those in the above-described embodiments is omitted.
- the head PET apparatus 1A of the second embodiment further drives the gantry 3 to the configuration of the first embodiment, and places the subject M in the opening 9 of the gantry 3 in parallel with the central axis 9a of the opening 9.
- a gantry moving mechanism 41 to be inserted is provided.
- the gantry 3 is supported by a pair of support pillars 11 via a gantry moving mechanism 41.
- the gantry moving mechanism 41 includes a support base 43 fixed to the pair of support pillars 11.
- the gantry moving mechanism 41 includes a guide rail 45, a motor 47, a speed reducer 49, a screw shaft 51, and a gantry connecting portion 53.
- a pair of guide rails 45 are arranged on the support base 43 in parallel with the central axis 9 a of the opening 9 of the gantry 3.
- a gantry connecting portion 53 that connects and supports the gantry 3 is supported so as to be movable along the guide rail 45.
- a motor 47, a speed reducer 49, and a screw shaft 51 are configured on the support base 43 so that the output of the motor 47 is transmitted to the screw shaft 51 through the speed reducer 49.
- the screw shaft 51 penetrates through the gantry connecting portion 53, and the penetrated portion is configured to mesh with the screw thread of the screw shaft 51.
- the gantry moving mechanism 41 corresponds to the imaging position moving mechanism in the present invention.
- the operator OP moves the chair 5 on which the subject M is seated by the chair moving mechanism 7 to perform alignment. Before the gantry 3 is moved, the gantry 3 can be brought to a height position where it can be easily aligned. Therefore, the operator OP can perform alignment with an easy posture.
- the head PET apparatus 1A includes a chair moving mechanism 7 that moves the chair 5 and a gantry moving mechanism 41 that moves the gantry 3.
- the head PET apparatus may include only the gantry moving mechanism 41 without including the chair moving mechanism 7.
- the operator OP visually aligns, the position cannot be adjusted in an easy posture such as bending down, and the heavy gantry 3 is moved, so that the chair 5 is moved rather than moved.
- the subject M is given a feeling of pressure.
- the effects of the first embodiment are obtained.
- FIG. 11 is a side view of the schematic configuration of the head PET apparatus according to the third embodiment, with a partial cross section.
- FIG. 12 is a diagram showing the configuration of the chair angle changing mechanism. Note that the description of the same components as those in the above-described embodiments is omitted.
- the head PET apparatus 1B includes the chair angle changing mechanism 57 that changes the angle between the backrest 5b and the seat 5c of the chair 5.
- the chair 5 includes a backrest portion 5 b and a seat portion 5 c that are connected to be rotatable about a support shaft 59.
- the support shaft 59 is fixed to the backrest portion 5 b, and the seat portion 5 c is coupled to be rotatable about the support shaft 59.
- the seat portion 5 c is supported by the support base 15 via the chair moving mechanism 7.
- the chair angle changing mechanism 57 includes a motor 61 fixed to the seat portion 5 c, a gear 63 fixed to the output shaft of the motor 61, and a gear 65 meshing with the gear 63 and fixed to the support shaft 59. ing. That is, when the chair angle changing mechanism 57 is operated, the motor 61 rotates forward and backward, and the rotation is transmitted from the gear 63 fixed to the output shaft of the motor 61 to the gear 65 fixed to the support shaft 59. At this time, the backrest 5b, the support shaft 59, and the gear 65 are in an integrated state. Thereby, the angle between the backrest part 5b to which the support shaft 59 is fixed and the seat part 5c can be increased or decreased. For this reason, the angle of the backrest 5b can be changed with respect to the seat 5c supported by the support base 15. That is, it is possible to perform an operation of tilting the backrest portion 5b backward and an operation of raising the backrest portion 5b forward.
- the chair angle changing mechanism 57 raises the back portion 5 b of the chair 5 forward. At this time, the angle of the backrest 5b with respect to the horizontal direction is set to a predetermined angle set in advance.
- the backrest portion 5 b is brought into a tilted state by the chair angle changing mechanism 57.
- the body axis A of the upper half of the subject M seated on the chair 5 and the central axis 9a of the opening 9 of the gantry 3 are configured to be parallel.
- the chair angle changing mechanism 57 performs the operation of tilting the backrest portion 5b of the chair to the rear of the chair 5 and the operation of raising the backrest portion 5b forward. .
- the backrest part 5b is in the state of being raised in front of the chair 5, so that, for example, the subject M is an elderly person and the backrest part 5b is tilted backward.
- the user feels uneasy about sitting on the chair 5, and the anxiety can be resolved. That is, it is possible to safely get on and off the subject M and to take an image of the subject M with a comfortable posture.
- FIG. 13 is a side view which shows the schematic structure of the PET apparatus for heads based on Example 4 in a partial cross section
- FIG. 14 is the front view
- FIG. 15 is a diagram for explaining the operation of the imaging angle changing mechanism. Note that the description of the same components as those in the above-described embodiments is omitted.
- the head PET apparatus 1 ⁇ / b> C includes a support column 69 that integrally supports the gantry 3 and the chair 5, and the horizontal direction in a state where the gantry 3 and the chair 5 are integrated.
- An imaging angle changing mechanism 71 that changes the angle is provided.
- the gantry 3 is supported by the support column 69, and the chair 5 is supported by the support column 69 via the chair moving mechanism 7 and the support base 15. That is, the gantry 3, the chair 5, the chair moving mechanism 7, and the support base 15 are integrated by the support column 69.
- the gantry moving mechanism 41 for moving the gantry 3 is provided, the gantry 3 is supported by the support column 69 via the gantry moving mechanism 41.
- the chair moving mechanism 7 is not provided but only the gantry moving mechanism 41 is provided, the chair 5 is supported by the support column 69 via the support base 15.
- a pair of support pillars 69 are provided with support shafts 73 fixed to the sides thereof.
- the support shaft 73 is rotatably supported by the base 75.
- the angle of the integrated gantry 3 or the like is changed around the support shaft 73.
- the imaging angle changing mechanism 71 includes a motor 77, a gear 79 fixed to the output shaft of the motor 77, and a gear 81 that meshes with the gear 79 and is fixed to the support shaft 73. That is, when the imaging angle changing mechanism 71 is operated, the motor 77 rotates forward and backward, and the rotation is transmitted from the gear 79 fixed to the output shaft of the motor 77 to the gear 81 fixed to the support shaft 73. Thereby, the integrated gantry 3 and the like rotate around the support shaft 73, and the angle of the central axis 9a of the opening 9 of the gantry 3 is changed with respect to the horizontal direction.
- the angle of the integrated gantry 3, etc. that is, the angle of the central axis 9a of the opening 9 of the gantry 3 is reduced with respect to the horizontal direction.
- the leg portion of the subject M is lifted up, resulting in an unstable posture.
- the angle of the integrated gantry 3 or the like is greatly inclined in the state of the seat portion 5c indicated by the solid line K in FIG. 15, the subject M becomes difficult to sit and becomes unstable.
- the head PET apparatus 1C further includes a chair angle changing mechanism 57 that changes the angle between the backrest 5b and the seat 5c of the chair 5 as described in the third embodiment.
- the chair 5 includes a backrest portion 5 b and a seat portion 5 c that are rotatably connected about a support shaft 59.
- the support shaft 59 is fixed to the backrest portion 5 b, and the seat portion 5 c is coupled to be rotatable about the support shaft 59.
- the support shaft 59 is rotatably supported by the support base 15 via the chair moving mechanism 7.
- the chair angle changing mechanism 57 includes a motor 61 fixed to the seat portion 5 c, a gear 63 fixed to the output shaft of the motor 61, and a gear 65 meshing with the gear 63 and fixed to the support shaft 59. ing. That is, when the chair angle changing mechanism 57 is operated, the motor 61 rotates forward and backward, and the rotation is transmitted from the gear 63 fixed to the output shaft of the motor 61 to the gear 65 fixed to the support shaft 59. At this time, the backrest 5b, the support shaft 59, and the gear 65 are in an integrated state. Thereby, the angle between the backrest part 5b to which the support shaft 59 is fixed and the seat part 5c can be increased or decreased.
- the backrest part 5b when the backrest part 5b is fixed, the angle of the seat part 5c is changed.
- the angle of the backrest 5b can be changed. That is, when the backrest part 5b is fixed, the seat part 5c can be moved forward and the rear part can be raised, and when the seat part 5c is fixed, the backrest part 5b is moved backward, and the front part Can be performed.
- the chair angle changing mechanism 57 is configured to change the angle between the backrest part 5b and the seat part 5c of the chair 5 in accordance with the angle of the imaging angle changing mechanism 71.
- the imaging angle changing mechanism 71 includes an angle detection unit 85 including a rotary encoder that detects an angle of the integrated gantry 3 and the like with respect to the horizontal direction, and the input shaft.
- a fixed gear 87 and a gear 89 that meshes with the gear 87 and is fixed to the support shaft 73 are provided.
- the chair angle changing mechanism 57 includes an angle detection unit 91 including a rotary encoder that detects an angle between the backrest 5 b and the seat 5 c, and the angle detection unit 91.
- a gear 93 fixed to the input shaft and meshing with the gear 65 is provided.
- the integrated gantry 3 or the like is changed from the state of the two-dot chain line indicated by reference numeral G in FIG. 13 to the state of the solid line indicated by reference numeral K in FIG.
- the operation of the imaging angle changing mechanism 71 and the chair angle changing mechanism 57 will be described by taking as an example the case where the angle is changed or the case where the angle is changed in the opposite direction.
- the chair angle changing mechanism 57 performs an operation in which the integrated gantry 3 or the like tilts forward by relatively changing the angles of the backrest portion 5b and the seat portion 5c of the chair 5 according to the inclination. For example, when the imaging angle changing mechanism 71 changes the angle by 5 °, the chair angle changing mechanism 57 changes the angle by ⁇ 5 °.
- the integrated gantry 3 and the like perform an operation of changing the angle except the seat 5c and the leg rest 5e of the chair 5 and tilting it behind the subject M.
- the chair angle changing mechanism 57 ends the operation of tilting the seat portion 5b forward. Therefore, when further tilting backward, the seat 5c and the leg rest 5e of the chair 5 operate so as to tilt backward together with the integrated gantry 3 and the like.
- the chair angle changing mechanism 57 does not operate until the predetermined angle described above.
- the seat 5c and the leg rest 5e of the chair 5 operate together with the integrated gantry 3 and the like.
- the chair angle changing mechanism 57 changes the angles of the backrest portion 5b and the seat portion 5c of the chair 5 relatively according to the inclination of the integrated gantry 3 or the like, and moves backward. Perform the action to wake up.
- the integrated gantry 3 or the like operates so that the angle is changed except for the seat portion 5c and the leg rest portion 5e of the chair 5 and is raised in front of the subject M.
- the preset angle is preferably an angle at which the posture of the subject M does not become unstable, for example, an angle at which the body of the subject M does not warp.
- control unit 37 monitors angle information from the angle detection units 85 and 91 provided in the imaging angle changing mechanism 71 and the chair angle changing mechanism 57, and performs appropriate control.
- the support column 69 that integrally supports the gantry 3, the chair 5, and the like, the gantry 3, the chair 5, and the like.
- an imaging angle changing mechanism 71 that changes the angle with respect to the horizontal direction. Therefore, the operator can select a posture such as a sitting position or a supine position suitable for the inspection by changing the angle of the gantry 3 or the like integrated by the imaging angle changing mechanism 71.
- the subject M can select the angle of the backrest 5b, and can perform the examination in an easy posture. Also, maintenance can be facilitated by changing the angle and lowering the gantry 3 to a lower position.
- the chair angle change mechanism 57 which changes the angle of the backrest part 5b of the chair 5 and the seat part 5c is provided, and the chair angle change mechanism 57 is the operation
- FIG. Therefore, since the subject M is prevented from being in an unstable posture depending on the angle, the subject M can be examined in an easy posture. In addition, since the angle of the integrated gantry 3 and the chair 5 is increased with respect to the horizontal direction, the subject M can be moved on and off while the integrated gantry 3 and the chair 5 are raised forward.
- the getting on and off of the subject M on the chair 5 can be performed easily and safely. Thereby, there is no need for assistance from the operator. Further, for example, if the subject M is an elderly person and the backrest portion 5b of the chair 5 has an angle, when the user feels uneasy about sitting, the anxiety can be resolved.
- each angle must be changed individually.
- the gantry 3 and the chair 5 and the like are integrally supported by the support pillar 69, even when the angle of the imaging angle changing mechanism 71 is changed, the central axis 9a of the opening 9 of the gantry 3 and The body axis of the upper half of the subject M seated on the chair 5 and the moving direction of the chair moving mechanism 7 remain parallel. Therefore, the subject M can be aligned by moving in a uniaxial direction from the position of getting on and off to the imaging position.
- FIG. 16 is a side view of the schematic configuration of the head PET apparatus according to the fifth embodiment, partly in cross section.
- FIG. 17 is a diagram illustrating the configuration of the thickness direction moving mechanism. Note that the description of the same components as those in the above-described embodiments is omitted.
- the head PET apparatus 1D is parallel to the vertical direction on the surface on which the subject M is placed, that is, on the surface of the backrest 5b of the chair 5 that contacts the subject M.
- a thickness direction moving mechanism 113 that moves the chair 5 in the thickness direction of the subject M is provided.
- the thickness direction moving mechanism 97 is provided between the chair 5 and the chair moving mechanism 7, for example.
- the thickness direction moving mechanism 97 includes a motor 99, a speed reducer 101, a screw shaft 103, a guide rail 105, and a chair support portion 107, as shown in FIG.
- the motor 99, the speed reducer 101, and the screw shaft 103 are configured such that the output of the motor 99 is transmitted to the screw shaft 103 via the speed reducer 101.
- the screw shaft 103 is arranged to be parallel to the thickness direction of the subject M.
- the rotation of the motor 99 is transmitted to the screw shaft 103 via the speed reducer 101, and the screw shaft 103 itself moves along the axis of the screw shaft 103.
- a chair support portion 107 that supports the chair 5 is disposed at one end of the screw shaft 103.
- a guide rail 105 is fixedly provided on the chair support unit 107 in a posture along the thickness direction of the subject M.
- the guide rail 105 passes through the connecting member 25.
- the chair support part 107 is comprised so that a movement along the guide rail 105 with respect to the connection member 25 is comprised.
- the moving distance of the thickness direction moving mechanism 97 is preferably in a range where the headrest 5a of the chair 5 does not protrude from the opening 9 of the gantry 3, for example, preferably within 5 cm.
- the thickness direction moving mechanism 97 that moves the chair 5 in the thickness direction of the subject M is provided. Therefore, even when the body thickness is different for each subject M, the body axis of the subject M and the central axis 9a of the opening 9 of the gantry 3 can be substantially matched. Therefore, since the head of the subject M does not move close to the inner wall of the opening 9 of the gantry 3, the alignment is easy and can be performed in a short time. Therefore, the subject M can be imaged in an easy posture, and convenience for the operator can be improved.
- the subject M is aligned in the biaxial direction as in the conventional apparatus, but basically the subject M gets on and off the chair 5. Since the movement between the position to be imaged and the imaging position only needs to be moved in one axial direction, as in the first embodiment described above, the positioning is easy and the effect can be achieved in a short time.
- the thickness direction moving mechanism 97 for moving the subject 5 in the thickness direction is provided, but the present invention is not limited to this configuration. That is, for example, a mechanism for changing the position of the headrest 5a in the thickness direction may be provided, or the seatrest 5a and the backrest 5b may be changed to a sheet having a different thickness, and the spacer may be the headrest 5 and the subject M. You may make it interpose between 5a and the backrest part 5b.
- FIG. 18 is a side view of the schematic configuration of the head PET apparatus according to Example 6 with a partial cross section. Note that the description of the same components as those in the above-described embodiments is omitted.
- the head PET apparatuses 1, 1A to 1D include the chair 5 on which the subject M is seated as a mounting table on which the subject M is placed.
- the present invention is not limited to this configuration.
- the head PET apparatus 1E may include a top plate 111 having a flat surface on which the subject M is placed.
- the top plate 111 includes a headrest 111a, a top plate main body 111b, and a leg rest 111c.
- the top plate 111 includes a mechanism that can adjust the position of the headrest 111a while keeping parallel to the central axis 9a of the opening 9 of the gantry 3 according to the height of the subject M.
- the subject M is placed so that the body axis A of the subject M placed on the top plate 111 is parallel to the central axis 9a of the opening 9 of the gantry 3 as in the above-described embodiments.
- the surface is inclined.
- the head PET apparatus 1 ⁇ / b> E includes a top plate moving mechanism 113 that moves the top plate 97 parallel to the central axis 9 a of the opening 9 of the gantry 3. Note that the configuration of the top board moving mechanism 113 is substantially the same as that of the chair moving mechanism 7, and thus the description thereof is omitted.
- the subject 111 includes the top plate 111 as a mounting table on which the subject M is placed.
- the examination can be performed with M's body extended.
- the top plate 111 is disposed in an inclined manner. Therefore, since one end of the top plate 111 is close to the floor and the top plate 111 is inclined, the subject M can be placed on the top plate 111 more easily than the conventional apparatus, and can be safely boarded / exited. be able to. Since the top plate 111 is inclined, the subject M can be imaged in an easy posture.
- the head PET apparatus 1E may be provided with a leg mounting portion angle changing mechanism 115 that changes the angle between the top plate body 111b of the top plate 111 and the leg mounting portion 111c.
- the top plate 111 is provided with a support shaft 117 fixed to the top plate main body 111 b, and the leg mounting portion 111 c is centered on the support shaft 117. It is connected rotatably.
- the top plate body 111b is supported by the support base 15 via the top plate moving mechanism 113.
- the leg mounting portion angle changing mechanism 115 includes a motor 119, a gear 121 fixed to the output shaft of the motor 119, and a gear 123 that meshes with the gear 121 and is fixed to the support shaft 117. That is, when the leg mounting portion angle changing mechanism 115 is operated, the motor 119 rotates forward and backward, and the rotation is transmitted from the gear 121 fixed to the output shaft of the motor 119 to the gear 123 fixed to the support shaft 117. .
- an operation of tilting forward is performed so that the surface on which the leg is placed is substantially horizontal
- after the subject M is placed on the top plate 97 the leg is placed.
- the operation of raising the back is performed so that the surface is substantially perpendicular to the surface on which the subject M of the top plate body 97b is placed. This allows the subject M to safely get on and off the top plate 111.
- the present invention is not limited to the above embodiment, and can be modified as follows.
- the outer periphery of the opening 9 of the gantry 3 has a multilayer detection that detects two radiations released in the opposite directions of 180 ° emitted from the radiopharmaceutical previously administered to the subject M.
- the container ring 13 was provided, it is not restricted to this structure. That is, a radiopharmaceutical to be administered to the subject M, that is, an external radiation source that irradiates the same kind of radiation as the radioisotope (RI) (for example, ⁇ -ray), and a ring detector that detects radiation from the external radiation source.
- RI radioisotope
- transmission data may be collected and absorption correction may be performed on the emission data.
- the opening 9 of the gantry 3 has a configuration in which the back side of the opening 9 is closed as shown in FIG. 1, for example, but is not limited to this configuration. That is, the opening may have a so-called tunnel shape that penetrates to the opposite side.
- the head for imaging the head of the subject M is used, but the configuration is not limited thereto. That is, the opening 9 of the gantry 3 may be set to be large so that the neck, chest, or other part of the subject M is imaged.
- the tomographic imaging apparatus is a PET apparatus that captures a tomographic image by simultaneously counting the radiation emitted from a specific part of the subject M to which the radiopharmaceutical is administered.
- the tomographic imaging apparatus may be an X-ray CT apparatus or an MRI (magnetic resonance imaging) apparatus.
- the mechanism for changing the position and angle is configured by at least one of a guide rail, a motor, a speed reducer, a screw shaft, a gear, and the like, but is not limited to this configuration. . That is, for example, the chair 5, the top plate 111, and the gantry 3 may be moved by providing a mechanism for expanding and contracting such as a hydraulic cylinder. Further, the angle between the backrest portion 5b and the seat portion 5c, the angle of the integrated gantry 3, etc., or the angle between the top plate body 111b and the leg rest portion 111c may be changed.
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Abstract
Description
3 … ガントリ
5 … 椅子
5b … 背もたれ部
5c … 座部
7 … 椅子移動機構
9 … 開口部
9a … 中心軸
11 … 支持柱
37 … 制御部
41 … ガントリ移動機構
57 … 椅子角度変更機構
69 … 支持柱
71 … 撮像角度変更機構
97 … 厚み方向移動機構
111… 天板
111b… 天板本体
111c… 脚載せ部
113… 天板移動機構
115… 脚載せ部角度変更機構
Claims (11)
- 開口部が斜め下を向くように、前記開口部の中心軸が傾斜しているガントリと、
前記ガントリの斜め下に配置されるとともに、前記開口部の中心軸と被検体の体軸とが平行となるように被検体を載置する面が傾斜している載置台と、
前記ガントリおよび前記載置台の少なくともいずれか一方を駆動し、前記開口部の中心軸と平行に被検体を前記開口部内に挿入する撮像位置移動機構と、を備えていることを特徴とする断層撮像装置。 - 請求項1に記載の断層撮像装置において、
前記ガントリ、前記載置台、および前記撮像位置移動機構は、予め設定された角度で固定して配置されていることを特徴とする断層撮像装置。 - 請求項1に記載の断層撮像装置において、
前記ガントリ、前記載置台、および前記撮像位置移動機構を一体に支持する支持柱と、
前記ガントリ、前記載置台、および前記撮像位置移動機構が一体となった状態で水平方向に対して角度を変更する撮像角度変更機構とを備えていることを特徴とする断層撮像装置。 - 請求項1または2に記載の断層撮像装置において、
前記載置台は、被検体を着座させる椅子であることを特徴とする断層撮像装置。 - 請求項3に記載の断層撮像装置において、
前記載置台は、被検体を着座させる椅子であることを特徴とする断層撮像装置。 - 請求項1から3のいずれかに記載の断層撮像装置において、
前記載置台は、被検体を載置する天板であることを特徴とする断層撮像装置。 - 請求項4に記載の断層撮像装置において、
前記椅子の背もたれ部と座部との角度を変更する椅子角度変更機構を備え、
前記椅子角度変更機構は、固定された前記座部に対して前記背もたれ部を後方へ倒す動作および前方に起こす動作を行うことを特徴とする断層撮像装置。 - 請求項5に記載の断層撮像装置において、
前記椅子の背もたれ部と座部との角度を変更する椅子角度変更機構を備え、
前記椅子角度変更機構は、固定された前記背もたれ部に対して前記座部を前方へ倒す動作および後方に起こす動作を行い、前記撮像角度変更機構の角度に応じて前記背もたれ部と前記座部との角度を変更することを特徴とする断層撮像装置。 - 請求項6に記載の断層撮像装置において、
前記天板の天板本体と被検体の脚部を載せる脚載せ部との角度を変更する脚載せ部角度変更機構を備え、
前記脚載せ部角度変更機構は、固定された前記天板本体に対して脚載せ部を前方へ倒す動作および後方に起こす動作を行うことを特徴とする断層撮像装置。 - 請求項1から9のいずれかに記載の断層撮像装置において、
前記載置台に載置された被検体の厚み方向に前記載置台を移動させる厚み方向移動機構を備えていることを特徴とする断層撮像装置。 - 請求項1から10のいずれかに記載の断層撮像装置において、
前記ガントリは、頭部用であることを特徴とする断層撮像装置。
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CN201080065400.0A CN102791198B (zh) | 2010-03-12 | 2010-03-12 | 断层摄像装置 |
PCT/JP2010/001788 WO2011111119A1 (ja) | 2010-03-12 | 2010-03-12 | 断層撮像装置 |
JP2012504161A JP5482887B2 (ja) | 2010-03-12 | 2010-03-12 | 断層撮像装置 |
US13/634,354 US9833208B2 (en) | 2010-03-12 | 2010-03-12 | Body section imaging apparatus |
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JP2015222193A (ja) * | 2014-05-22 | 2015-12-10 | 株式会社島津製作所 | 放射線測定装置 |
EP2861148A4 (en) * | 2012-06-14 | 2016-01-27 | Eugene A Gregerson | PICTURE SYSTEM WITH VERTICAL SCANNING |
US9962132B2 (en) | 2012-06-14 | 2018-05-08 | Mobius Imaging, Llc | Multi-directional X-ray imaging system with single support column |
JP2018110865A (ja) * | 2017-01-13 | 2018-07-19 | シロナ・デンタル・システムズ・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | 患者の頭部領域を測定するためのmri装置および方法 |
JP2018110863A (ja) * | 2017-01-13 | 2018-07-19 | シロナ・デンタル・システムズ・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | 頭部の少なくとも一部分を測定するためのmri装置 |
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Also Published As
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US20120324648A1 (en) | 2012-12-27 |
CN102791198A (zh) | 2012-11-21 |
JP5482887B2 (ja) | 2014-05-07 |
JPWO2011111119A1 (ja) | 2013-06-27 |
CN102791198B (zh) | 2016-03-02 |
US9833208B2 (en) | 2017-12-05 |
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