CN104068884A - Installation and alignment indicating device and installation and alignment indicating method for PET-CT (positron emission tomography-computed tomography) frameworks - Google Patents
Installation and alignment indicating device and installation and alignment indicating method for PET-CT (positron emission tomography-computed tomography) frameworks Download PDFInfo
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- CN104068884A CN104068884A CN201310095902.3A CN201310095902A CN104068884A CN 104068884 A CN104068884 A CN 104068884A CN 201310095902 A CN201310095902 A CN 201310095902A CN 104068884 A CN104068884 A CN 104068884A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/02—Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computerised tomographs
- A61B6/032—Transmission computed tomography [CT]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/02—Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computerised tomographs
- A61B6/037—Emission tomography
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. 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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/52—Devices using data or image processing specially adapted for radiation diagnosis
- A61B6/5211—Devices using data or image processing specially adapted for radiation diagnosis involving processing of medical diagnostic data
- A61B6/5229—Devices using data or image processing specially adapted for radiation diagnosis involving processing of medical diagnostic data combining image data of a patient, e.g. combining a functional image with an anatomical image
- A61B6/5235—Devices using data or image processing specially adapted for radiation diagnosis involving processing of medical diagnostic data combining image data of a patient, e.g. combining a functional image with an anatomical image combining images from the same or different ionising radiation imaging techniques, e.g. PET and CT
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/58—Testing, adjusting or calibrating apparatus or devices for radiation diagnosis
Abstract
The invention provides an installation and alignment indicating device and an installation and alignment indicating method for PET-CT (positron emission tomography-computed tomography) frameworks. The installation and alignment indicating method includes respectively installing a CT (computed tomography) center indicating assembly and a PET(positron emission tomography) center indicating assembly on a CT framework rotary portion and a PET framework; enabling a laser device of the CT center indicating assembly to emit a laser beam to the PET framework, adjusting front and back supporting point positions of the PET frameworks, aligning the laser beam to a first center indicator and a second center indicator of the PET center indicating assembly and aligning a CT rotation center to the center of a PET detector at the moment. The laser beam is used for indicating the CT rotation center. The installation and alignment indicating device and the installation and alignment indicating method have the advantages that the installation and alignment indicating device is simple in structure and convenient to adjust, influence of CT center assembly machining and installation errors can be eliminated, the alignment precision is high, and the requirement on the installation coaxiality of the center of the PET detector and the CT rotation center can be assuredly met.
Description
Technical field
The present invention relates to technical field of medical instruments, relate in particular to a kind of indicating device and method of aiming at of installing for PET-CT frame.
Background technology
Computed tomography (Computed Tomography, CT) be that electronic computer is combined with X-ray examination, utilize the difference of human body different tissues to X ray attenuation coefficient of transmission, the ray signal difference that detector is received, and be reconstructed the technology of human body fault image.Positron emission tomography scanning (Positron Emission Tomography, PET) be a kind of taking positron radionuclide as tracer, by lesions position, the picked-up of tracer is understood to focus functional metabolism state, and then the technology of disease being made to diagnosis.
PET-CT organically combines PET and CT, use same examinating couch and same image processing workstation, PET image and CT image are formed to PET-CT fusion image by image reconstruction integration technology, a video picture can reflect pathophysiological change and the morphosis of focus simultaneously, realize and having complementary advantages, have sensitivity, accurately, the feature such as the high and registration of specificity.
Current PET-CT machine is all designed to a PET machine and a form that CT machine is installed together, and in order to realize PET image and CT image better merges, needs to ensure PET frame and CT frame aiming at along scan channel direction.In the prior art, the aligning of two frames mainly contains by aiming in the time that PET frame is installed to realize with precision machining mating surface in CT frame, and this kind of mode improved difficulty of processing and manufacturing cost to a great extent; Another kind of alignment is height and the mutual alignment by back-up block these back-up blocks of close adjustment are installed on the ground, to ensure to be arranged on aiming at of PET frame on back-up block and CT frame, but this kind of calibration steps is very complicated, and required truing tool is expensive.
For overcoming above-mentioned defect, be necessary to provide a kind of simple in structure, easy to adjust, and can well ensure installation marking tools and the method that PET detector and CT center of rotation axiality require.
Summary of the invention
The problem that the present invention solves is to provide a kind of indicating device and method of aiming at of installing for PET-CT frame, carry out simply and easily the aligning of CT and PET frame installs to realize, and can eliminate the impact of CT center element processing and alignment error, improve alignment precision, ensure the axiality that PET detector center and CT center of rotation are installed.
For addressing the above problem, technical solution of the present invention provide a kind of while assembling for PET-CT PET with CT frame, the indicating device of aiming at is installed, described indicating device comprises indication component HePET center, CT center indication component, CT center indication component is installed on CT frame rotating part, PET center indication component is installed in PET frame, it is characterized in that:
CT center indication component, comprises laser instrument, the four-dimensional platform of adjusting, and laser instrument is fixed on four-dimensional adjustment on platform.
PET center indication component, comprises the first central plate, the second central plate, the first center tester He center two indicators, and the first center tester is placed in the center of the first central plate, and the second center tester is placed in the center of the second central plate.
Optionally, on the laser instrument of described CT center indication component, there is a focusing ring.
Optionally, the four-dimension of described CT center indication component is adjusted platform four adjusting knobs, can realize respectively along the translation of X-axis and Y direction, and around the rotation of X-axis and Y-axis.
Optionally, the first indicator and second indicator of described PET center indication component are a circular hole, or are the indicator board with cross scale, or are the indicator board with concentric circular scale.
Optionally, described CT center indication component also comprises for supporting the four-dimensional gripper shoe of adjusting platform.
Optionally, described CT center indication component also comprises for connecting the four-dimensional contiguous block of adjusting platform and gripper shoe.
Optionally, described CT center indication component also comprises fixed muffle, and laser instrument is fixed on four-dimensional adjustment on platform by fixed muffle.
For addressing the above problem, the present invention also provides a kind of PET-CT frame that the method for aiming at is installed, and comprising:
Described CT center indication component is installed on the reserved interface of CT frame rotating part;
Described PET center indication component is installed on the reserved interface of PET frame;
The laser instrument of CT center indication component is to PET frame direction transmitting beam of laser;
Make the laser facula of described laser instrument transmitting near the first center tester position of described PET center indication component;
Regulate the four-dimension of described CT center indication component to adjust the adjusting knob of platform, when CT frame rotating part is rotated described in facula position motionless, make described hot spot be positioned at the center of rotation of CT;
Regulate PET frame front position, make described hot spot aim at the first center tester of the first central plate of described PET frame;
Keep the position of described the first central plate motionless, make described hot spot can arrive the second center tester position of the second central plate of also close described PET frame, regulate PET frame rear end position, make described hot spot aim at the second center tester.
Optionally, when the laser facula of described laser instrument transmitting is during near described the first center tester position, regulate the focusing of laser instrument to change, make described hot spot reach minimum.
Optionally, the first center tester is with cross scale or the indicator board with concentric circular scale, keeps described the first central plate position motionless, takes off described the first center tester, makes described hot spot arrive the second center tester position of the second central plate.
Compared with prior art, the PET-CT frame that technical solution of the present invention provides is installed indicating device and the method for aiming at, simple in structure, easy to adjust, adopt two centers indication component to indicate respectively CT center of rotation and PET detector center, and can accurately confirm CT center of rotation, eliminate the impact of the indication component processing of LiaoCT center and alignment error, alignment precision is high, can well ensure the axiality requirement that PET detector center and CT center of rotation are installed.
Brief description of the drawings
Fig. 1 is the exploded view of CT of the present invention center indication component;
Fig. 2 is the left view of CT of the present invention center indication component;
Fig. 3 is the four-dimensional schematic diagram of adjusting platform of the present invention;
Fig. 4 is that CT of the present invention center indication component is arranged on the schematic diagram in CT frame;
Fig. 5 is the structural representation of PET of the present invention center indication component;
Fig. 6 is first, second center tester schematic diagram with cross scale;
Fig. 7 is that PET of the present invention center indication component is arranged on the schematic diagram in PET frame;
Fig. 8 is that PET of the present invention regulates schematic diagram to punctual frame;
Fig. 9 is that PET of the present invention and CT frame are to punctual overall structure schematic diagram;
Figure 10 is that PET-CT frame of the present invention is installed alignment methods flow chart.
Detailed description of the invention
For above-mentioned purpose of the present invention, feature and advantage can more be become apparent, below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in detail.Obviously, described embodiment is only a part for embodiment of the present invention, instead of they are whole.According to these embodiment, those of ordinary skill in the art is obtainable all other embodiments under the prerequisite without creative work, all belong to protection scope of the present invention.
Shown in Fig. 1, Fig. 2 and Fig. 5, described PET-CT frame is installed and is aimed at indicating device YouCT center indication component 1 HePET center indication component 3 two parts compositions, wherein CT center indication component 1 is used to indicate CT center of rotation, and PET center indication component 3 is used to indicate the center of PET detector.
Shown in Fig. 3, described CT center indication component 1 is by gripper shoe 11, contiguous block 12, laser instrument 13, the four-dimensional main parts size compositions such as platform 14 and laser instrument fixed muffle 15 of adjusting.Described laser instrument 13 is fixed on four-dimensional adjustment on platform 14 by described laser instrument fixed muffle 15, on described laser instrument 13, there is a focusing ring 131, can be used for the focus adjustment of institute's Emission Lasers, the described four-dimensional platform 14 of adjusting has four adjusting knob 141-144, adjusting knob 141 can be realized the four-dimensional translation of platform 14 along X-direction of adjusting, adjusting knob 142 can be realized the four-dimensional translation of platform 14 along Y direction of adjusting, adjusting knob 143 can be realized the four-dimensional moving of platform 14 along X-direction of adjusting, and adjusting knob 144 can be realized the four-dimensional moving of platform 14 along Y direction of adjusting.The described four-dimensional platform 14 of adjusting that described laser instrument 13 is housed is fixed in gripper shoe 11 by described contiguous block 12, the described four-dimensional platform of adjusting is fixed on the reserved interface of described contiguous block 12 by screw 123, screw 124, the described contiguous block 12 that is fixed with four-dimensional adjustment platform 14 is fixed in described gripper shoe 11 by screw 121, screw 122, and the reserved circular hole 111 in gripper shoe 11 centers can be passed in described laser instrument 13 rear ends.Also porose 112, hole 113, hole 114, hole 115 in described gripper shoe 11, increase these four holes and not only can alleviate the weight of gripper shoe 11, also can make gripper shoe 11 installing and more convenient when dismounting.
Certainly, in gripper shoe 11, the number in hole is not limited to four in above-described embodiment, the shape in hole 112, hole 113, hole 114 and hole 115 is also not limited to the triangle shown in Fig. 1, Fig. 1 is only number, shape and the position that schematically draws these holes, in other embodiments, those skilled in the art also can change according to practical situation number and the form in hole, even can not establish these perforates.
Shown in Fig. 5 and Fig. 6, described PET center indication component 3, comprises the first central plate 31, the second central plate 32, the first center testers 33 and the second center testers 34.Described the first center tester 33 is positioned at described the first central plate 31 centers, and described the second center tester 34 is positioned at described the second central plate 32 centers.In the present embodiment, described the first center tester 33, the second center tester 34 are the indicator board with cross scale, in other embodiments, also can use the indicator board with concentric circular scale, can also be an aperture of the first central plate 31, the second central plate 32 centers, those skilled in the art can adopt any object with indicative effect according to practical situation.
Shown in Fig. 4, Fig. 7, Fig. 8, Fig. 9 and Figure 10, method and step that PET-CT frame is installed aligning are as follows:
(1) the described CT center indication component 1 assembling is installed on CT frame rotating part, be fixed on the reserved interface of CT frame rotating part 2 by screw 121, screw 122 by described gripper shoe 11, be used to indicate CT center of rotation, the laser that now described laser instrument 13 is launched is positioned at roughly the center of CT frame rotating part 2, and described laser instrument 13 is to PET direction transmitting beam of laser;
(2) described PET center indication component 3 is installed on the reserved interface of PET frame 4, is used to indicate the center of PET detector; PET frame 4 is moved on the position that needs to install, adjust the position of described PET frame 4, make laser facula that described laser instrument 13 the launches position near the first center tester 33 on described the first central plate 31, regulate the focusing on described laser instrument 13 to change 131, make the hot spot on described the first central plate 31 reach minimum;
(3) with the moving described CT frame rotating part 2 of slow with one's hands slow-speed, if now described laser beam does not overlap completely with CT center of rotation, the track of described hot spot on the first central plate 31 is a circle, can be by regulating the four-dimensional adjusting knob of adjusting on platform 14, described in when CT frame rotating part 2 is rotated, facula position is motionless, and now described hot spot is positioned on the center of rotation of CT;
(4) move described PET frame 4, adjust the strong point 41 and the strong point 42 of PET frame 4 front ends, make described hot spot aim at the first center tester 33;
(5) keep the position of described the first central plate 31 motionless, take off described the first center tester 33, the laser facula that described laser instrument 13 is launched can arrive the also position near the second center tester 34 on described the second central plate 32, regulate described focusing ring 131, make described hot spot reach minimum.Regulate the strong point 43 of PET frame 4 rear ends, the height of the strong point 44, make described hot spot aim at the second center tester 32.
It should be noted that, before the described strong point 43 of adjusting, the strong point 44, also can reaffirm CT center of rotation, operational approach is identical with above-mentioned confirmation method, with the moving CT rotating part of slow with one's hands slow-speed, if described laser spot position is motionless, show that now laser facula is still on CT center of rotation; If the track of laser facula on rear center's plate is a circle described in while rotating CT rotating part, need again to regulate the four-dimensional adjusting knob of adjusting on platform 14, when CT is rotated described in laser spot position motionless.
It should be noted that, when described laser arrives the second central plate 32 position, position approaches the second center tester 34 very much, thereby be only very small amplitude for the adjusting of the described strong point 43, the strong point 44, can substantially keep the position of the first central plate 31 motionless so be in course of adjustment.If have impact slightly in adjustment process, can repeat above-mentioned steps, until PETYu CT center is completely coaxial.
Although the present invention with preferred embodiment openly as above; but it is not for limiting the present invention; any those skilled in the art without departing from the spirit and scope of the present invention; can utilize method and the technology contents of above-mentioned announcement to make possible variation and amendment to technical solution of the present invention; therefore; every content that does not depart from technical solution of the present invention; any simple modification, equivalent variations and the modification above embodiment done according to technical spirit of the present invention, all belong to the protection domain of technical solution of the present invention.
Claims (10)
1. for PET-CT frame, an indicating device of aiming at is installed, is comprised indication component HePET center, CT center indication component, CT center indication component is installed on CT frame rotating part, and PET center indication component is installed in PET frame, it is characterized in that:
CT center indication component, comprises laser instrument, the four-dimensional platform of adjusting, and laser instrument is fixed on four-dimensional adjustment on platform; PET center indication component, comprises the first central plate, the second central plate, the first center tester and the second center tester, and the first center tester is positioned at the center of the first central plate, and the second center tester is positioned at the center of the second central plate.
2. PET-CT frame according to claim 1 is installed and is aimed at indicating device, it is characterized in that: on the laser instrument of described CT center indication component, have a focusing ring.
3. PET-CT frame according to claim 1 is installed and is aimed at indicating device, it is characterized in that: the four-dimension of described CT center indication component is adjusted platform four adjusting knobs, can realize respectively along the translation of X-axis and Y direction, and around the rotation of X-axis and Y-axis.
4. PET-CT frame according to claim 1 is installed and is aimed at indicating device, it is characterized in that: the first center tester and second center tester of described PET center indication component are a circular hole, or be the indicator board with cross scale, or be the indicator board with concentric circular scale.
5. PET-CT frame according to claim 1 is installed and is aimed at indicating device, it is characterized in that: described CT center indication component also comprises for supporting the four-dimensional gripper shoe of adjusting platform.
6. PET-CT frame according to claim 5 is installed and is aimed at indicating device, it is characterized in that: described CT center indication component also comprises for connecting the four-dimensional contiguous block of adjusting platform and gripper shoe.
7. PET-CT frame according to claim 1 is installed and is aimed at indicating device, it is characterized in that: described CT center indication component also comprises fixed muffle, and laser instrument is fixed on four-dimensional adjustment on platform by fixed muffle.
8. PET-CT frame is installed a method of aiming at, and it is characterized in that, comprising:
CT center indication component is installed as claimed in claim 1 on the reserved interface of CT frame rotating part;
PET center indication component is installed as claimed in claim 1 on the reserved interface of PET frame;
The laser instrument of CT center indication component, to PET frame direction transmitting beam of laser, makes the laser facula of described laser instrument transmitting near the first center tester position of described PET center indication component;
Regulate the four-dimension of described CT center indication component to adjust the adjusting knob of platform, when CT frame rotating part is rotated described in facula position motionless, confirm that described hot spot is positioned at CT center of rotation;
Regulate PET frame front position, make described hot spot aim at the first center tester of the first central plate of described PET frame;
Keep the position of described the first central plate motionless, make described hot spot can arrive the second indicator post of the second central plate of also close described PET frame, regulate PET frame rear end position, make described hot spot aim at the second center tester.
9. PET-CT frame according to claim 8 is installed the method for aiming at, and it is characterized in that: when the laser facula of described laser instrument transmitting is during near described the first center tester position, regulate the focusing ring of laser instrument, make described hot spot reach minimum.
10. PET-CT frame according to claim 8 is installed the method for aiming at, it is characterized in that: the first center tester is with cross scale or the indicator board with concentric circular scale, keep described the first central plate position motionless, take off described the first center tester, make described hot spot arrive the second center tester of the second central plate.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710641270.4A CN107296621B (en) | 2013-03-25 | 2013-03-25 | Indicating device and method for PET-CT rack installation alignment |
| CN201310095902.3A CN104068884B (en) | 2013-03-25 | 2013-03-25 | A kind of instruction device and method for the installation alignment of PET CT frames |
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| CN201310095902.3A CN104068884B (en) | 2013-03-25 | 2013-03-25 | A kind of instruction device and method for the installation alignment of PET CT frames |
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| CN201710641270.4A Division CN107296621B (en) | 2013-03-25 | 2013-03-25 | Indicating device and method for PET-CT rack installation alignment |
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| CN104068884B CN104068884B (en) | 2018-01-16 |
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| CN201310095902.3A Active CN104068884B (en) | 2013-03-25 | 2013-03-25 | A kind of instruction device and method for the installation alignment of PET CT frames |
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| CN109224323A (en) * | 2018-11-19 | 2019-01-18 | 合肥中科离子医学技术装备有限公司 | A kind of proton therapeutic rotary frame and its assembly method |
| CN109224323B (en) * | 2018-11-19 | 2023-07-25 | 合肥中科离子医学技术装备有限公司 | Proton treatment rotating frame and assembly method thereof |
| CN110338825A (en) * | 2019-07-05 | 2019-10-18 | 湖北锐世数字医学影像科技有限公司 | A kind of laser locating apparatus and PET-CT equipment |
| CN111214253A (en) * | 2020-01-22 | 2020-06-02 | 赛诺联合医疗科技（北京）有限公司 | Calibration device and calibration method for multiple image equipment |
| CN113951913A (en) * | 2021-10-18 | 2022-01-21 | 中南大学湘雅医院 | PET-CT image scanning positioning rack based on four-dimensional CT fusion |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104068884B (en) | 2018-01-16 |
| CN107296621B (en) | 2020-10-16 |
| CN107296621A (en) | 2017-10-27 |
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