CN206995614U - A kind of rotation platform for volume rotation intensity modulated radiation therapy plan checking - Google Patents
A kind of rotation platform for volume rotation intensity modulated radiation therapy plan checking Download PDFInfo
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- CN206995614U CN206995614U CN201720119593.2U CN201720119593U CN206995614U CN 206995614 U CN206995614 U CN 206995614U CN 201720119593 U CN201720119593 U CN 201720119593U CN 206995614 U CN206995614 U CN 206995614U
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- ionisation chamber
- slip ring
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- rotation
- chamber matrix
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- 238000002721 intensity-modulated radiation therapy Methods 0.000 title claims abstract description 16
- 239000011159 matrix material Substances 0.000 claims abstract description 75
- 238000012544 monitoring process Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000003575 carbonaceous material Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000005855 radiation Effects 0.000 abstract description 5
- 239000000523 sample Substances 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000001959 radiotherapy Methods 0.000 description 3
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- 238000011161 development Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 230000001225 therapeutic effect Effects 0.000 description 2
- 238000002560 therapeutic procedure Methods 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
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- 230000005484 gravity Effects 0.000 description 1
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- Radiation-Therapy Devices (AREA)
Abstract
The utility model discloses a kind of rotation platform for volume rotation intensity modulated radiation therapy plan checking, for technical field of medical instruments, including control unit, ionisation chamber matrix adapters, can drive electro-motor that the ionisation chamber matrix adapters rotate and can monitoring accelerator gantry rotation angle angular sensor, the electro-motor and angular sensor are connected by data wire with control unit, and the ionisation chamber matrix adapters, which are provided with, can be inserted into the screens that two-dimentional ionisation chamber matrix and dosage build up plate.By the technical program, the rotation platform can overcome the dependence of angle of ionisation chamber probe matrix, while retain corresponding rotation information, to detect some execution errors in frame rotary course, really analyze actual radiation situation.
Description
Technical field
The utility model is used for technical field of medical instruments, is used for volume rotation intensity modulated radiation therapy plan more particularly to one kind
The rotation platform of checking.
Background technology
With the development of radiation therapy technology, IMRT technology is irradiated to reduce normal structure by highly conformable
Illuminated body accumulates, and improves target dose, to reach the higher oncotherapy ratio of gains, has relative to traditional external exposure technology higher
The significant advantage such as accuracy of dose, dosage conformal degree and geometric accuracy.
With the continuous development of computer technology, radiotherapy equipment and tumor radiotherapy theory, in the fixed wild strong skill of tune
Occur volume rotation IMRT technology, the technological improvement control system of accelerator, with dynamic on the basis of art
The form of rotation, it is dynamic, synchronous, continuously adjust various parameters, such as treat frame and position and the fortune of multi-blade collimator
Dynamic speed etc..
For adjusting the dosimeter checking of strong plan substantially to be carried out by measuring dose point or two-dimension plane dose, with
The corresponding dose point and face dosage that treatment planning systems calculate are made comparisons, and then judge the implementation status of plan.Compared to traditional
Verification tool such as thimble ionization chamber or film, two-dimensional detector matrix such as semiconductor matrix or ionisation chamber matrix are tested to dosage
Card work brings great convenience.Patient care plan is transplanted to the CT images of detector matrix die body in checking and recalculated
Dosage, then made comparisons with the actual dosage measured of ionisation chamber matrix.Due to two-dimentional ionisation chamber matrix have obvious angle according to
Lai Xing, i.e. detector response change with the change of frame angle, therefore generally adjust strong launched field to fix by all when in use
In the flux of zero degree angular measurement accumulation, and the flux calculated with treatment planning systems compares.But adjusted by force for volume rotation,
Although the above method can overcome the dependence of angle of probe, the result but lost corresponding rotation information, so as to
Some execution errors are can't detect, so that analysis result can not really reflect actual conditions.In addition, there is scholar to ionize two dimension
Room matrix panel is pasted and fixed on accelerator electronic portal imaging device EPID ray detection panel, and it is saturating to carry out patient during rotation is adjusted by force
Penetrate the real-time monitoring of dosage, the advantage of the method be can during patient's actual therapeutic real-time data collection, so as to obtain
Intergal dose during patient's actual therapeutic, but electronic portal imaging device EPID panel and ionisation chamber matrix panel and treatment
Head all may produce position deviation because of Action of Gravity Field, influence the accuracy of dosage verifying.
The systems such as COMPASS or ArcCheck are a kind of three-dimensional checking works for being directed to volume rotation intensity modulated therapy plan
Tool, it contains volume concept, can intuitively reflect due to Rapid Dose Calculation either transmission error to tumour or normal structure by
According to influence caused by dosage, but the equipment price is expensive, and measurement process is complex.It there is no method general for small-middle hospital
And.If the dependence of angle that ionisation chamber is popped one's head in can be overcome and retain the rotation information of accelerator frame, two-dimentional ionisation chamber
Matrix equally be can yet be regarded as, and a kind of rotation tune of volume well is strong to plan verification tool.
Utility model content
To solve the above problems, the utility model provides a kind of rotary flat for volume rotation intensity modulated radiation therapy plan checking
Platform, in that context it may be convenient to verified using two-dimentional ionisation chamber matrix to volume rotation intensity modulated radiation therapy plan.
Technical scheme is used by the utility model solves its technical problem：One kind is based on volume rotation intensity modulated radiation therapy
Draw the rotation platform of checking, including control unit, ionisation chamber matrix adapters, the ionisation chamber matrix adapters can be driven to rotate
Electro-motor and can monitoring accelerator gantry rotation angle angular sensor, the electro-motor and the anglec of rotation
Sensor is connected by data wire with control unit, and the ionisation chamber matrix adapters, which are provided with, can be inserted into two-dimentional ionisation chamber square
Battle array and dosage build up the screens of plate.
It is further used as the improvement of technical solutions of the utility model, in addition to adapter runing rest, the adapter rotation
Turn support and be provided with circular outer slip ring, the ionisation chamber matrix adapters are provided with can outer with the circle slip ring slip or rolling
Slip ring in the circle of cooperation, the ionisation chamber matrix adapters are rotatable by the cooperation of slip ring in slip ring outside circle and circle
On adapter runing rest.
The improvement of technical solutions of the utility model is further used as, the adapter runing rest is prismatic framework knot
Structure, the front end of adapter runing rest are provided with first three angular framework, and rear end is provided with rear triangle framework, the outer slip ring bag of circle
Include the preceding outer slip ring of circle being located on first three angular framework and the rear outer slip ring of circle being located on rear triangle framework, the circle
Interior slip ring include being located at ionisation chamber matrix adapters front end and be engaged with the preceding outer slip ring of circle it is preceding it is circular in slip ring and be located at
Slip ring in ionisation chamber matrix adapters rear end and the rear circle being engaged with the rear outer slip ring of circle.
It is further used as the improvement of technical solutions of the utility model, adapter runing rest and ionisation chamber the matrix adaptation
Device is made of carbon materials.
The improvement of technical solutions of the utility model is further used as, the bottom four corners of the adapter runing rest are respectively provided with
The support feet of one levelling.
The improvement of technical solutions of the utility model is further used as, the dosage builds up plate by equivalent solid water material system
Into.
The beneficial effects of the utility model：In use, two-dimentional ionisation chamber matrix and dosage, which build up plate, is placed in ionisation chamber matrix
In adapter, control unit receives the instant angle signal of angular sensor transmission, and controls the speed of electro-motor to drive
The rotation of dynamic ionisation chamber matrix adapters, make angle and the linear accelerator frame angle of ionisation chamber matrix adapters in the process
Spend it is always consistent, i.e., ionisation chamber matrix measurement plane all the time with linear accelerator radiation Shu Chuizhi.By the technical program,
The rotation platform can overcome the dependence of angle of ionisation chamber probe matrix, while retain corresponding rotation information, to detect
Some execution errors in frame rotary course, really analyze actual radiation situation.
Wherein, when accelerator frame at the uniform velocity rotates, the rotating speed of ionisation chamber matrix adapters can be by control unit to electricity
The control of dynamic motor is adjusted.When accelerator is non-at the uniform velocity to be rotated, control unit passes through angular sensor rack
Angle signal simultaneously synchronizes regulation to the ionisation chamber matrix adapters anglec of rotation.
Brief description of the drawings
The utility model is described in further detail below in conjunction with the accompanying drawings：
Fig. 1 is the utility model structure diagram；
Fig. 2 is the utility model side view.
Embodiment
Reference picture 1, Fig. 2, that show the concrete structure of the preferred embodiment of the utility model.It will be detailed below
The design feature of each part of the utility model, and during if being described to direction (upper and lower, left and right, before and after), it is with Fig. 1
Shown structure is that reference describes, but actual use direction of the present utility model is not limited thereto.
The utility model provides a kind of rotation platform for volume rotation intensity modulated radiation therapy plan checking, including control list
Member 1, ionisation chamber matrix adapters 2, electro-motor 3 that the ionisation chamber matrix adapters 2 rotate can be driven and can monitor plus
The angular sensor 4 of fast device gantry rotation angle, the electro-motor 3 and angular sensor 4 pass through data wire
It is connected with control unit 1, the ionisation chamber matrix adapters 2 are provided with pluggable two-dimentional ionisation chamber matrix 5 and dosage and built up
The screens of plate 6, the dosage build up plate 6 and are made up of equivalent solid water material.The screens is to be revolved along ionisation chamber matrix adapters 2
Turn axially arranged slot, two-dimentional ionisation chamber matrix 5 and dosage build up plate 6 can be by the side of ionisation chamber matrix adapters 2 along inserting
Groove inserts and uses the clamping of buckle 21.Wherein, when accelerator frame at the uniform velocity rotates, the rotating speed of ionisation chamber matrix adapters 2 can lead to
Control of the control unit 1 to electro-motor 3 is crossed to be adjusted.When accelerator is non-at the uniform velocity to be rotated, control unit 1 passes through the anglec of rotation
The degree rack angle signal of sensor 4 simultaneously synchronizes regulation to the anglec of rotation of ionisation chamber matrix adapters 2.
It is placed in use, two-dimentional ionisation chamber matrix 5 and dosage build up plate 6 in ionisation chamber matrix adapters 2, control unit 1
The instant angle signal that angular sensor 4 transmits is received, and controls the speed of electro-motor 3 to drive ionisation chamber matrix adaptation
The rotation of device 2, the angle and linear accelerator frame angle for making ionisation chamber matrix adapters 2 in the process remain one
Cause, i.e., ionisation chamber matrix measurement plane all the time with linear accelerator radiation Shu Chuizhi.Pass through the technical program, the rotation platform energy
Enough overcome the dependence of angle of ionisation chamber probe matrix, while retain corresponding rotation information, to detect frame rotary course
In some execution errors, really analyze actual radiation situation.
As the utility model preferred embodiment, in addition to adapter runing rest 7, the adapter runing rest
7 be prismatic frame structure, and the front end of adapter runing rest 7 is provided with first three angular framework, and rear end is provided with rear triangle framework,
The adapter runing rest 7 is provided with circular outer slip ring 71, and the ionisation chamber matrix adapters 2 are provided with can be with the circle
Outer slip ring 71 slides or rolled slip ring 72 in the circle coordinated, and the ionisation chamber matrix adapters 2 pass through the He of slip ring outside circle 71
The cooperation of slip ring 72 is rotatably arranged on adapter runing rest 7 in circle.The outer slip ring 71 of circle is included before being located at
The preceding outer slip ring of circle on triangular framing and the rear outer slip ring of circle being located on rear triangle framework, it is described it is circular in slip ring 72
Including slip ring and being located at ionisation chamber in the preceding circle that is located at the front end of ionisation chamber matrix adapters 2 and is engaged with the preceding outer slip ring of circle
Slip ring in the rear end of matrix adapters 2 and the rear circle being engaged with the rear outer slip ring of circle.By in slip ring outside circle 71 and circle
Slip ring 72, the angle of ionisation chamber matrix adapters 2 and linear accelerator frame angle can be made always consistent.
The rotation of the ionisation chamber matrix adapters 2 is driven by electro-motor 3, and the device of ionisation chamber matrix adapters 2 has one
Cross bar, the cross bar are connected with the output shaft of electro-motor 3, the two tie point circle of slip ring 72 and circular outer slip ring 71 in circle
The heart.When the output shaft of electro-motor 3 rotates, cross bar and ionisation chamber matrix adapters are driven to rotate by interior slip ring.It is wherein electronic
The rotating speed of motor 3 can be adjusted by control unit 1.
Wherein, the adapter runing rest 7 and ionisation chamber matrix adapters 2 are made of carbon materials, the material
Attenuation coefficient is smaller to be ignored.
Can moreover, the bottom four corners of the adapter runing rest 7 are respectively provided with the support feet 73 of a levelling, during use
Level tune is carried out by the nut of the support feet 73 of adapter runing rest 7.
The utility model is as follows using operating：
First, this rotation platform is placed on accelerator table, makes the side of its ionisation chamber matrix adapters 2 towards directly
The line accelerator therapy head of a bed, electro-motor 3 one are placed on tailstock direction；And make the long axis direction of adapter runing rest 7 with adding
The Y-axis of laser lamp is consistent in fast device computer room.
Two-dimentional ionisation chamber matrix 5 and equivalent solid water dosage are built up into A side edge card of the plate by ionisation chamber matrix adapters 2
Groove inserts and uses buckle clamping.
Fixed ionisation chamber matrix adapters 2 are carried out horizontal by the rotation of support feet 73 to ionisation chamber matrix 0 ° of position
Regulation.Using the x directions of laser lamp regulation ionisation chamber matrix and the position in y directions, make effective survey of ionisation chamber matrix adapters 2
Measure the X of plane, Y-axis overlaps with laser lamp.
Angular sensor 4 is fixed on to some position of accelerator frame, respectively rotary frame angle to 0 °, 45 °,
90 °, angular transducer is calibrated, can accurately read accelerator frame angle information.
Connect the power line of control unit 1 and electro-motor 3.Open ionisation chamber matrix majorization software（The control software category
In prior art, the utility model does not make improvements）, electro-motor power supply is opened, strong planned transmission is adjusted into volume rotation
To accelerator and perform, when accelerator frame rotates, its angle information transmits controls electronic to control unit 1, control unit 1
Cross bar in motor operations, i.e. electro-motor output shaft driving ionisation chamber matrix adapters 2 rotates, now adapter runing rest
7th, circular outer slip ring 71 remains stationary as, and in circle slip ring 72 and be secured to ionisation chamber matrix adapters 2 together by
Rotated to driving.The angle of ionisation chamber matrix adapters 2 is consistent with accelerator frame in rotary course.In accelerator
Frame can gather dosage information while rotating out of beam.
Certainly, the invention is not limited to above-mentioned embodiment, and those skilled in the art are without prejudice to originally
Equivalent variations or replacement can be also made on the premise of utility model spirit, these equivalent modifications or replacement are all contained in the application
In claim limited range.
Claims (6)
- A kind of 1. rotation platform for volume rotation intensity modulated radiation therapy plan checking, it is characterised in that：Including control unit, ionization Room matrix adapters, electro-motor that the ionisation chamber matrix adapters rotate can be driven and can the rotation of monitoring accelerator frame The angular sensor of angle, the electro-motor and angular sensor are connected by data wire with control unit, The ionisation chamber matrix adapters, which are provided with, can be inserted into the screens that two-dimentional ionisation chamber matrix and dosage build up plate.
- 2. the rotation platform according to claim 1 for volume rotation intensity modulated radiation therapy plan checking, it is characterised in that：Also Including adapter runing rest, the adapter runing rest is provided with circular outer slip ring, in the ionisation chamber matrix adapters Provided with can outer with circle slip ring slide or roll slip ring in the circle coordinated, the ionisation chamber matrix adapters pass through circle The cooperation of slip ring is rotatably arranged on adapter runing rest in outer slip ring and circle.
- 3. the rotation platform according to claim 2 for volume rotation intensity modulated radiation therapy plan checking, it is characterised in that：Institute It is prismatic frame structure to state adapter runing rest, and the front end of adapter runing rest is provided with first three angular framework, and rear end is set There is rear triangle framework, the outer slip ring of circle includes the preceding outer slip ring of circle being located on first three angular framework and is located at Vee formation The rear outer slip ring of circle on shape framework, in the circle slip ring include being located at ionisation chamber matrix adapters front end and with it is preceding circular outer Slip ring and after being located at ionisation chamber matrix adapters rear end and being engaged with the rear outer slip ring of circle in the preceding circle that slip ring is engaged Slip ring in circle.
- 4. the rotation platform according to claim 2 for volume rotation intensity modulated radiation therapy plan checking, it is characterised in that：Institute State adapter runing rest and ionisation chamber matrix adapters are made of carbon materials.
- 5. the rotation platform according to claim 2 for volume rotation intensity modulated radiation therapy plan checking, it is characterised in that：Institute The bottom four corners for stating adapter runing rest are respectively provided with the support feet of a levelling.
- 6. the rotation platform according to claim 1 for volume rotation intensity modulated radiation therapy plan checking, it is characterised in that：Institute State dosage and build up plate and be made up of equivalent solid water material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720119593.2U CN206995614U (en) | 2017-02-08 | 2017-02-08 | A kind of rotation platform for volume rotation intensity modulated radiation therapy plan checking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720119593.2U CN206995614U (en) | 2017-02-08 | 2017-02-08 | A kind of rotation platform for volume rotation intensity modulated radiation therapy plan checking |
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| Publication Number | Publication Date |
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| CN206995614U true CN206995614U (en) | 2018-02-13 |
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| CN201720119593.2U Expired - Fee Related CN206995614U (en) | 2017-02-08 | 2017-02-08 | A kind of rotation platform for volume rotation intensity modulated radiation therapy plan checking |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109379829A (en) * | 2018-12-13 | 2019-02-22 | 广东医科大学 | Medical electronic linear accelerator rack |
-
2017
- 2017-02-08 CN CN201720119593.2U patent/CN206995614U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109379829A (en) * | 2018-12-13 | 2019-02-22 | 广东医科大学 | Medical electronic linear accelerator rack |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180213 |