CN107174758B - A kind of compact proton medical treatment CBCT system image-sensing panel development mechanisms - Google Patents
A kind of compact proton medical treatment CBCT system image-sensing panel development mechanisms Download PDFInfo
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- CN107174758B CN107174758B CN201710537948.4A CN201710537948A CN107174758B CN 107174758 B CN107174758 B CN 107174758B CN 201710537948 A CN201710537948 A CN 201710537948A CN 107174758 B CN107174758 B CN 107174758B
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- mounting seat
- medical treatment
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1001—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy using radiation sources introduced into or applied onto the body; brachytherapy
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1048—Monitoring, verifying, controlling systems and methods
- A61N5/1049—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam
- A61N2005/1061—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam using an x-ray imaging system having a separate imaging source
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N2005/1085—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy characterised by the type of particles applied to the patient
- A61N2005/1087—Ions; Protons
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- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Radiation-Therapy Devices (AREA)
Abstract
The present invention discloses a kind of compact proton medical treatment CBCT system image-sensing panel development mechanisms, including image-sensing panel deploying portion, image-sensing panel is half-open and standard-sized sheet conversion portion, image-sensing panel coupling part, described image detection plate deploying portion include straight-line motion mechanism and slider-crank mechanism；The image-sensing panel mounting seat pivoting of slider-crank mechanism described in the straight-line motion mechanism drive connection；Described image detection plate is half-open and standard-sized sheet conversion portion includes linear actuator；Described image detection plate coupling part includes image-sensing panel；The linear actuator drive connection image-sensing panel；Described image detection plate is slidably connected in image-sensing panel mounting seat.Simple in construction, reliable operation of the invention, kinematic accuracy is high, the image-sensing panel synchronous expansion of the left and right sides, does not take therapeutic room space for a long time, and patient's x-ray scanning image of different position difference postures can be received from the mating reaction of rotation therapy room.
Description
Technical field
The invention belongs to proton radioactivity therapy field, is related to a kind of x-ray image detection plate development mechanism, more particularly, to
A kind of development mechanism for proton medical treatment rotation therapy room accurate-location device CBCT system x-ray image detection plates.
Background technology
Proton medical treatment is commonly called as " cancer jinx ", and proton beam is main for the oncotherapy place more superior than other radiotherapy patterns
It is the Bragg peaks using proton beam, the different shape of preferably conformal envelope tumour, the border of its envelope is than X and gamma-rays
It is sharper.Proton therapeutic only carries out fixed point high energy radiation to tumor focus, greatly reduces tumour surrounding health tissue and organ
Radioactive dose, can mitigate the organ easily influenceed by radioactive ray side effect, reduce radiotherapy subsequent affect, treat tumour conscientiously
Focus is small to the burden of body, pair has a heart disease etc. the gerontal patient of other diseases simultaneously or the patient that has a delicate constitution can also connect
It is treated.With the development of radiation therapy technology, to be accurately positioned, accurately plan, accurate treatment for core accurate radiotherapy
(precision radiotherapy, PT) technology has broken the conventional therapy pattern of traditional empirical formula, turns into a kind of
New " routine " radiotherapy, so as to promote radiotherapy to enter the epoch of accurate radiotherapy.Conical beam CT (cone beam CT, CBCT)
It is based on large area amorphous silicon digitlization X-ray detection X plate, there is small volume, it is in light weight, the characteristics of open architecture, Ke Yizhi
Connect and be incorporated on linear accelerator.Frame rotates a circle the CT images that just can be obtained and rebuild in the range of a volume.CBCT can
To reach the spatial resolution higher than traditional CT, density resolution is also enough to differentiate soft tissue structure, can pass through tumour
Imaging guiding radiotherapy itself.And the ray utilization ratio of the system is high, the roentgen dose X that patient receives is few, allows its conduct
A kind of real-time monitoring means.CBCT, which has, to carry out X-ray examination in treatment position, takes the photograph piece and the multi-functional of volume imaging.Precisely
The pendulum position precision of radiotherapy requirement is high, CBCT is applied can be obtained on proton Medical Devices target area and around vitals three
Confining space positions, and can reduce Set-up errors, the accurate position for showing patient, while patient can be supervised in treatment position
Survey, and quickly obtain the current therapeutic dose of patient.But how by CBCT configurations in rotary therapeutic room, how to allow CBCT
It is always problem to implementing monitoring positioning in real time in patient's diseased region various dimensions solid space.
The content of the invention
It is an object of the invention to provide a kind of X-ray figure for proton medical treatment rotation therapy room accurate-location device CBCT
As detection plate development mechanism, it applies in proton medical treatment realize that x-ray image detection plate is deployed.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of compact proton medical treatment CBCT system image-sensing panel development mechanisms, including image-sensing panel deploying portion,
Image-sensing panel is half-open and standard-sized sheet conversion portion, image-sensing panel coupling part, described image detection plate deploying portion include straight
Line movement mechanism and slider-crank mechanism；The image-sensing panel of slider-crank mechanism described in the straight-line motion mechanism drive connection
Mounting seat pivoting；Described image detection plate is half-open and standard-sized sheet conversion portion includes linear actuator；Described image detection plate
Coupling part includes image-sensing panel；The linear actuator drive connection image-sensing panel；Described image detection plate, which is slided, to be connected
It is connected in image-sensing panel mounting seat.
The straight-line motion mechanism is a kind of by fortune in screw pair, electric pushrod, crank block or rack-and-pinion
Turn is changed to the mechanism of linear motion.
The screw pair is made up of the ball-screw being arranged in ball-screw mounting seat, and ball-screw mounting seat is erected
Directly to being located on the madial wall of proton head mounting seat one；The upper end of ball-screw is coupled by shaft coupling with harmonic speed reducer, harmonic wave
Decelerator couples with servomotor；The image inspection of slider-crank mechanism described in the ball-screw drive connection of the screw pair
Drafting board mounting seat pivoting.
The slider-crank mechanism is by sliding platform, U-shaped folder, left side connecting rod, right side connecting rod, connecting seat and image-sensing panel
Mounting seat is formed；Sliding platform is arranged on the nut of ball-screw, U-shaped folder and sliding platform bolt connection；Left side connecting rod, the right side
Proton head mounting seat both sides and and a connecting seat are stretched in one end of side connecting rod respectively with U-shaped folder hinge connection, the other end respectively
Hinge connection；The connecting seat is bolted in image-sensing panel mounting seat, and image-sensing panel mounting seat is rotatablely installed by axle
In proton head mounting seat.
Line slideway is installed in described image detection plate, sliding block, straight line are installed in described image detection plate mounting seat
Guide rail is engaged with sliding block and is slidably connected.
Linear actuator mounting seat, the linear actuator end and linear actuator are connected with described image detection plate
Mounting seat is fixedly connected by linear actuator adpting flange.
The convert rotational motion of the servomotor is the vertical motion of sliding platform, then the vertical motion by sliding platform
Rotation of the image-sensing panel mounting seat around axle is converted into, realizes the expansion of image-sensing panel.
The servomotor is turned clockwise, image-sensing panel expansion, servomotor rotate counterclockwise, and image-sensing panel is received
Return.
Described image detection plate is promoted by linear actuator, realizes the switching of half-open standard-sized sheet both of which.
The present invention is by image-sensing panel deploying portion, image-sensing panel is half-open and standard-sized sheet conversion portion, image-sensing panel
Coupling part collective effect realizes expansion of the image-sensing panel on rotation therapy room；Ball-screw nut drives sliding platform,
Sliding platform drivening rod, forms slider-crank mechanism, and connecting rod drives image-sensing panel to be rotated around fixing axle, realizes image detection
The expansion of plate；The half-open and standard-sized sheet conversion portion and image-sensing panel coupling part collective effect of image-sensing panel realize it is half-open and
The free switching of standard-sized sheet both of which；
Development mechanism is connected with rotation therapy room carries out 360 ° of rotations of plane, and image-sensing panel can receive patient and appoint
What figure, detection image at any position；The image-sensing panel of left and right two is driven by screw pair, the left and right sides
Detection plate motion is synchronous, improves accuracy of detection；Ball-screw is driven by servomotor+harmonic speed reducer, ensure that whole
Set mechanism speed and position are precisely controlled.
Beneficial effects of the present invention：
The present invention by screw pair, slider-crank mechanism drive image-sensing panel, allow detection plate with it is vertically arranged
Two X sources coordinate, the scan image that two image-sensing panels obtain, and obtain obtaining target area and surrounding weight by computer integrated
The measurements of the chest, waist and hips space orientation of organ is wanted, realizes and patient is scanned in real time with CBCT X source in rotary therapeutic room
Monitoring；
Simple in construction, reliable operation of the invention, kinematic accuracy is high, the image-sensing panel synchronous expansion of the left and right sides, does not grow
Phase takes therapeutic room space, and patient's x-ray scanning figure of different position difference postures can be received from the mating reaction of rotation therapy room
Picture.
Brief description of the drawings
For the ease of it will be appreciated by those skilled in the art that the present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the overall structure figure of the present invention；
Fig. 2 is the development mechanism structure chart of the present invention；
Fig. 3 is the image-sensing panel local structural graph of the present invention；
Fig. 4 is the development mechanism layout of the present invention；
The development mechanism that Fig. 5 is the present invention moves schematic diagram；
Label in figure：Image-sensing panel deploying portion -1, image-sensing panel be half-open and standard-sized sheet conversion portion -2, image detection
It is plate coupling part -3, rotation therapy room -4, X source emitter -5, image-sensing panel -6, linear actuator mounting seat -7, straight
Line guide rail -8, sliding block -9, image-sensing panel mounting seat -10, axle -11, connecting seat -12, proton head mounting seat -13, left side connecting rod -
14th, ball-screw mounting seat -15, ball-screw -16, right side connecting rod -17, servomotor -18, harmonic speed reducer -19, shaft coupling
Device -20, sliding platform -21, U-shaped folder -22, linear actuator adpting flange -23, linear actuator -24.
Embodiment
, there are further understanding and understanding the effect of to make to architectural feature of the invention and being reached, to preferably in fact
Example and accompanying drawing coordinate detailed description, are described as follows：
A kind of compact proton medical treatment CBCT system image-sensing panels development mechanism is (i.e. a kind of to be controlled for proton medical treatment rotation
Treat the development mechanism of room x-ray image detection plate), as shown in Figure 1 and Figure 2, it is installed on rotation therapy room 4, the mechanism includes：Figure
As detection plate deploying portion 1, image-sensing panel half-open (fold) connect with standard-sized sheet (unfold) conversion portion 2, image-sensing panel
Part 3；
Wherein, image-sensing panel deploying portion 1 includes screw pair and slider-crank mechanism；Specifically, feed screw nut
Pair is made up of the ball-screw 16 being arranged in ball-screw mounting seat 15, and ball-screw mounting seat 15 is vertically to being located at proton head
On the madial wall of mounting seat 13 1；The upper end of ball-screw 16 is coupled by shaft coupling 20 with harmonic speed reducer 19, harmonic speed reducer
19 couple with servomotor 18, and the driving of ball-screw 16 is completed jointly by the harmonic decelerator 19 of servomotor 18, servo electricity
Machine 18 is precisely controlled by motor servo driver；
Slider-crank mechanism is by sliding platform 21, U-shaped folder 22, left side connecting rod 14, right side connecting rod 17, connecting seat 12 and image
Detection plate mounting seat 10 is formed；Sliding platform 21 is arranged on the nut of ball-screw, and U-shaped folder 22 connects with the bolt of sliding platform 21
Connect, ensure connection precision, save installing space；Left side connecting rod 14, one end of right side connecting rod 17 connect with the hinge of U-shaped folder 22 respectively
Connect, the other end stretch to respectively the both sides of proton head mounting seat 13 and with the hinge connection of a connecting seat 12；The bolt of connecting seat 12 connects
It is connected in image-sensing panel mounting seat 10, image-sensing panel mounting seat 10 is rotatably installed in proton head mounting seat 13 by axle 11
On；
Image-sensing panel is half-open and standard-sized sheet conversion portion 2 includes linear actuator mounting seat 7, linear actuator adpting flange
23 with linear actuator 24, referring to Fig. 3；Image-sensing panel coupling part 3 includes image-sensing panel 6, line slideway 8 and sliding block 9；
Sliding block 9 is arranged in image-sensing panel mounting seat 10, and line slideway 8 is arranged on image-sensing panel 6, line slideway
8 are engaged with sliding block 9 and are slidably connected, and image-sensing panel 6 is only existed one degree of freedom, are easy to half-open, full opening mode
Switching；
Linear actuator mounting seat 7 is connected with image-sensing panel 6, the end of linear actuator 24 and linear actuator mounting seat
7 are fixedly connected by linear actuator adpting flange 23, and the head end of linear actuator 24 is connected to image-sensing panel mounting seat 10
On, linear actuator 24 provides power for half-open, full opening mode switching；
Referring to Fig. 4, Fig. 5, working method and principle of the present invention are：
Development mechanism is by screw pair driving and slider-crank mechanism collective effect, by the rotary motion of servomotor 18
Be converted into the vertical motion of sliding platform 21, then by the vertical motion of sliding platform 21 be converted into image-sensing panel mounting seat 10 around
The rotation of axle 11, realize the expansion of image-sensing panel 6；
During work, the servomotor 18 to slow down by harmonic speed reducer 19 drives ball-screw 16, and ball-screw 16 drives
The connecting rod of both sides, the power on the connecting rod of both sides pass to image-sensing panel mounting seat 10, it is rotated around axle 11, make image detection
Expansion is realized in plate pivoting；Servomotor 18 turns clockwise, image-sensing panel expansion, the rotate counterclockwise of servomotor 18,
Image-sensing panel is withdrawn；
Image-sensing panel 6 is promoted by linear actuator 24, realizes the switching of half-open standard-sized sheet both of which；
Image-sensing panel 6 is realized synchronous expansion, is improved image inspection by left side connecting rod 14 and the collective effect of right side connecting rod 15
Survey precision.
During work, development mechanism provided by the invention connects with rotation therapy room 4, when rotation therapy room reaches specified location
When, development mechanism and X source mating reaction；Image-sensing panel 6 coordinates with the X source emitter 5 being disposed vertically, and collects two
The detection image in orientation.Simple in construction, reliable operation of the invention, does not take therapeutic room space for a long time, coordinates with rotation therapy room
Effect can realize 360 ° of scannings of plane.
Present invention disclosed above preferred embodiment is only intended to help and illustrates the present invention.Preferred embodiment is not detailed
All details are described, it is only described embodiment also not limit the invention, and feed screw nut's type of drive in figure is same
Sample can be replaced by electric pushrod, slider-crank mechanism, rack-and-pinion etc., and other move the mechanism for being converted to linear motion.It is aobvious
So, according to the content of this specification, can make many modifications and variations.This specification is chosen and specifically describes these embodiments,
It is in order to preferably explain the principle and practical application of the present invention, so that skilled artisan can be best understood by
It is of the invention with utilizing.The invention is limited only by the claims and the full scope thereof and equivalents thereof.
Claims (9)
1. a kind of compact proton medical treatment CBCT system image-sensing panel development mechanisms, including image-sensing panel deploying portion (1),
Image-sensing panel is half-open and standard-sized sheet conversion portion (2), image-sensing panel coupling part (3), it is characterised in that：
Described image detection plate deploying portion (1) includes straight-line motion mechanism and slider-crank mechanism；The straight-line motion mechanism
The image-sensing panel mounting seat (10) of slider-crank mechanism described in drive connection rotates around axle (11)；
Described image detection plate is half-open and standard-sized sheet conversion portion (2) includes linear actuator (24)；Described image detection plate connects
Partly (3) include image-sensing panel (6)；Linear actuator (24) the drive connection image-sensing panel (6)；Described image detects
Plate (6) is slidably connected in image-sensing panel mounting seat (10).
2. a kind of compact proton medical treatment CBCT system image-sensing panel development mechanisms according to claim 1, its feature
It is：The straight-line motion mechanism is a kind of by motion turn in screw pair, electric pushrod, crank block or rack-and-pinion
It is changed to the mechanism of linear motion.
3. a kind of compact proton medical treatment CBCT system image-sensing panel development mechanisms according to claim 2, its feature
It is：The screw pair is made up of the ball-screw (16) being arranged in ball-screw mounting seat (15), ball-screw peace
Dress seat (15) is vertically to being located on the madial wall of proton head mounting seat (13) one；The upper end of ball-screw (16) passes through shaft coupling (20)
Couple with harmonic speed reducer (19), harmonic speed reducer (19) couples with servomotor (18)；The ball wire of the screw pair
The image-sensing panel mounting seat (10) of slider-crank mechanism described in thick stick (16) drive connection rotates around axle (11).
4. a kind of compact proton medical treatment CBCT system image-sensing panel development mechanisms according to claim 1, its feature
It is：The slider-crank mechanism is by sliding platform (21), U-shaped folder (22), left side connecting rod (14), right side connecting rod (17), connection
Seat (12) is formed with image-sensing panel mounting seat (10)；U-shaped folder (22) and sliding platform (21) bolt connection；Left side connecting rod
(14), proton head mounting seat (13) is stretched in one end of right side connecting rod (17) respectively with U-shaped folder (22) hinge connection, the other end respectively
Both sides and with a connecting seat (12) hinge connection；The connecting seat (12) is bolted in image-sensing panel mounting seat (10),
Image-sensing panel mounting seat (10) is rotatably installed in proton head mounting seat (13) by axle (11).
5. a kind of compact proton medical treatment CBCT system image-sensing panel development mechanisms according to claim 1, its feature
It is：Line slideway (8) is installed in described image detection plate (6), cunning is installed in described image detection plate mounting seat (10)
Block (9), line slideway (8) are engaged with sliding block (9) and are slidably connected.
6. a kind of compact proton medical treatment CBCT system image-sensing panel development mechanisms according to claim 1, its feature
It is：Be connected with linear actuator mounting seat (7) in described image detection plate (6), linear actuator (24) end with it is straight
Line drive mounting seat (7) is fixedly connected by linear actuator adpting flange (23).
7. a kind of compact proton medical treatment CBCT system image-sensing panel development mechanisms according to claim 3, its feature
It is：The convert rotational motion of the servomotor (18) is the vertical motion of sliding platform (21), and sliding platform (21) is installed
Image-sensing panel mounting seat (10) is converted into around axle on the nut of ball-screw, then by the vertical motion of sliding platform (21)
(11) rotation, the expansion of image-sensing panel (6) is realized.
8. a kind of compact proton medical treatment CBCT system image-sensing panel development mechanisms according to claim 3, its feature
It is：The servomotor (18) turns clockwise, image-sensing panel expansion, servomotor (18) rotate counterclockwise, image inspection
Drafting board is withdrawn.
9. a kind of compact proton medical treatment CBCT system image-sensing panel development mechanisms according to claim 1, its feature
It is：Described image detection plate (6) is promoted by linear actuator (24), realizes the switching of half-open standard-sized sheet both of which.
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| CN101422372A (en) * | 2000-02-18 | 2009-05-06 | 威廉博蒙特医院 | Cone-beam computerized tomography with a flat-panel imager |
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