CN114053600B - Source-outlet length measuring system for rear-loading radiation therapy apparatus - Google Patents
Source-outlet length measuring system for rear-loading radiation therapy apparatus Download PDFInfo
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- CN114053600B CN114053600B CN202111341540.2A CN202111341540A CN114053600B CN 114053600 B CN114053600 B CN 114053600B CN 202111341540 A CN202111341540 A CN 202111341540A CN 114053600 B CN114053600 B CN 114053600B
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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
- A61N5/1007—Arrangements or means for the introduction of sources into the body
-
- 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
- A61N5/1007—Arrangements or means for the introduction of sources into the body
- A61N2005/1008—Apparatus for temporary insertion of sources, e.g. afterloaders
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The invention discloses a source length measuring system for a rear-loading radiotherapy machine, and belongs to the technical field of radiotherapy apparatuses. The system comprises a main scale assembly, a secondary scale assembly, a camera shooting assembly and a display control unit; the main scale assembly is vertically arranged on an external workbench, the auxiliary scale assembly is arranged on the main scale assembly, the radioactive source to be measured is cooperatively arranged on the auxiliary scale assembly and moves up and down along the vertical direction, and the source length is displayed by reading scales on the main scale assembly and the auxiliary scale assembly at the initial position; the camera shooting assembly shoots, stores and records the source-out process under the control of the display control unit; the display control unit sends a control instruction to the camera shooting assembly and controls the shooting position and angle. The invention can realize remote measurement of the distance transmitted by the radioactive source and ensure the measurement precision.
Description
Technical Field
The invention belongs to the technical field of radiotherapy apparatuses, and particularly relates to an outlet source length measuring system for a rear-loading radiotherapy machine.
Background
The rear-loading radiotherapy machine is a device for treating tumors by utilizing rays generated by a radioactive source, the radioactive source is fixedly connected with a source braid, the radioactive source is conveyed into an applicator lumen which is preset near the tumors in a human body through a conveying device, and the residence position and time of the radioactive source are controlled so as to control the irradiation dose of the radioactive source to the tumors. Due to the operation errors of the transmission and control device, the post-loading radiotherapy machine needs to periodically detect the accuracy of the transmission distance of the radioactive source, and the transmission position of the radioactive source cannot be directly measured nearby due to the radioactivity of the radioactive source.
The national standard requires that the positioning error of the source is less than 1mm, a ruler with the minimum graduation of 1mm is adopted when the length of the source is measured at present, and the error range can be described from the observation angle, but the error caused by human factors such as observers, observation angles and the like is larger when the source is specifically counted.
Disclosure of Invention
In view of the above, the present invention provides an outlet length measurement system for a rear-loading radiation therapy apparatus, which can remotely measure a distance transmitted by a radiation source and can ensure measurement accuracy.
The system comprises a main ruler component, an auxiliary ruler component, a camera shooting component and a display control unit;
the main scale assembly is vertically arranged on an external workbench, the auxiliary scale assembly is arranged on the main scale assembly, the radioactive source to be measured is arranged on the auxiliary scale assembly in a matched mode and moves up and down along the vertical direction, and the source length is displayed by reading scales on the main scale assembly and the auxiliary scale assembly at the initial position;
the camera shooting assembly shoots, stores and records the source-out process under the control of the display control unit;
the display control unit sends a control instruction to the camera shooting assembly and controls the shooting position and angle.
Further, the main scale assembly comprises a bracket, a graduated main scale, a radioactive source catheter connector and a baffle plate; the radioactive source catheter connector is fixedly connected with the main scale and positioned below one side of the main scale with the scale marks, and the baffle is fixedly connected with the bracket and positioned above one side of the main scale with the scale marks; the dividing line spacing on the dividing main scale is 1mm.
Further, the auxiliary ruler component comprises a thin-wall transparent conduit and a flat-bottom graduated auxiliary ruler; the flat-bottom scale auxiliary ruler is provided with an air hole and five-scale dividing lines, the air hole penetrates through the upper end face and the lower end face of the flat-bottom scale auxiliary ruler, and the spacing between the lines in the five-scale dividing lines is 0.8mm; the flat-bottom scale auxiliary ruler is arranged in the thin-wall transparent conduit and is in clearance fit with the inner wall of the conduit, and the flat-bottom scale auxiliary ruler freely slides down in the thin-wall transparent conduit under the action of gravity.
Further, the thin-wall transparent conduit is fixedly connected with the bracket and is correspondingly positioned at one side of the main scale with scale marks, the lower end of the thin-wall transparent conduit is fixedly connected with the radioactive source conduit joint, and the upper end of the thin-wall transparent conduit is positioned below the baffle and is provided with a gap with the baffle;
the external applicator hose is connected with the radioactive source catheter connector in a clamping sleeve manner, the radioactive source hose and the thin-wall transparent catheter are connected to form a pipeline, and the radioactive source is fixedly connected with the source braid and then is arranged in the pipeline formed by connecting the radioactive source hose and the thin-wall transparent catheter and can freely slide.
Further, the camera shooting assembly comprises a remote control camera, a cradle head and a control line; the remote control camera is electrically connected with the control line and fixedly connected with the cradle head.
Further, the display control unit comprises a display and a controller; the display is electrically connected with the controller, the controller is electrically connected with the control line, and the controller sends control instructions of the movement direction and the movement angle to the cradle head through the control line.
Further, an air blowing device is arranged in the thin-wall transparent catheter, and the air blowing device forces the auxiliary scale to return to the initial position through air flow.
Further, image recognition software is added in the controller, and the image recognition software has the functions of automatically reading, displaying and recording the source position.
Further, a radioactive source cutting sleeve device is additionally arranged on the flat-bottom scale auxiliary ruler, the flat-bottom scale auxiliary ruler is connected with a radioactive source when the radioactive source is conveyed, and the flat-bottom scale auxiliary ruler is separated from the cutting sleeve when the radioactive source is recovered.
The beneficial effects are that:
1. according to the invention, the auxiliary scale assembly is arranged on the main scale assembly, the radioactive source to be measured is arranged on the auxiliary scale assembly in a matched manner and moves up and down along the vertical direction, the source length is displayed by reading the scales on the main scale assembly and the auxiliary scale assembly at the initial position, the shooting assembly shoots, stores and records the source outlet process under the control of the display control unit, the remote measurement of the distance transmitted by the radioactive source can be realized, no harmful radiation is generated to a measurer, and the personal safety of medical staff is ensured.
2. The main scale assembly comprises a main scale, the auxiliary scale assembly comprises a flat-bottom auxiliary scale, the dividing line spacing on the main scale is 1mm, the dividing line spacing in the five dividing lines of the flat-bottom auxiliary scale is 0.8mm, the dividing line spacing difference between the main scale and the auxiliary scale reads the dividing decimal part, the decimal value is easy to read, the reading precision of the source position is improved, and the auxiliary scale dividing can be set according to the precision requirement.
3. The main scale component adopts the replaceable radioactive source catheter connector, and the catheter connector with different specifications is replaced aiming at applicators of different manufacturers, so that the main scale component is suitable for measuring the source position of different applicators and has the characteristic of strong suitability.
Drawings
FIG. 1 is a schematic diagram of an outlet length measurement system for a post-loading radiotherapy apparatus according to the present invention;
fig. 2 is a partial enlarged view of the main scale, the sub scale and the source position indication of the present invention.
The device comprises a 1-bracket, a 2-graduated main scale, a 3-graduated auxiliary scale, a 4-radioactive source, a 5-source braid, a 6-radioactive source catheter connector, a 7-applicator hose, an 8-thin-wall transparent catheter, a 9-baffle, a 10-camera, a 11-cradle head, a 12-control line, a 13-controller and a 14-display.
Detailed Description
The invention will now be described in detail by way of example with reference to the accompanying drawings.
As shown in figure 1, the invention provides an outlet source length measuring system for a rear-loading radiotherapy machine, which comprises a main ruler component, a secondary ruler component, a camera shooting component and a display control unit;
the main scale assembly comprises a bracket 1, a graduated main scale 2, a radioactive source catheter connector 6 and a baffle 9, wherein the dividing line spacing on the graduated main scale 2 is 1mm.
The auxiliary ruler component comprises a thin-wall transparent guide pipe 8 and a flat-bottom graduated auxiliary ruler 3, wherein the auxiliary ruler 3 is provided with an air hole and five graduation score lines, the air hole penetrates through the upper end face and the lower end face of the flat-bottom graduated auxiliary ruler 3, and the distance between the five graduation score lines is 0.8mm.
The camera assembly comprises a remote control camera 10, a cradle head 11 and a control line 12.
The display control unit includes a display 14 and a controller 13.
The main scale 2 is fixedly connected with the bracket 1, the radioactive source catheter connector 6 is fixedly connected with the main scale 2, and the baffle 9 is fixedly connected with the bracket 1; the flat bottom graduated scale 3 is arranged in the thin wall transparent conduit 8 and is in clearance fit with the conduit 8, the graduated scale 3 can freely slide down in the conduit 8 under the action of gravity, the thin wall transparent conduit 8 is fixedly connected with the bracket 1, the lower end of the conduit 8 is fixedly connected with the radioactive source conduit joint 6, and the upper end of the conduit 8 is positioned below the baffle 9 and is in clearance with the baffle 9.
The external applicator hose 7 is connected with the radioactive source catheter connector 6 in a clamping sleeve manner, so that the radioactive source hose 7 and the thin-wall transparent catheter 8 are connected to form a pipeline, the radioactive source 4 is fixedly connected with the source braid 5 and then is placed in the pipeline formed by connecting the radioactive source hose 7 and the thin-wall transparent catheter 8, and the radioactive source hose and the thin-wall transparent catheter 8 can slide freely, and the position relationship is shown in figure 2.
The radioactive source 4 is fixedly connected with the source braid 5 and freely slides in a pipeline formed by connecting the radioactive source hose 7 with the thin-wall transparent catheter 8, the front end of the radioactive source 4 is contacted with the flat-bottom auxiliary scale 3, so that the radioactive source 4 and the flat-bottom auxiliary scale 3 synchronously slide in the pipeline, and the air guide holes on the flat-bottom auxiliary scale 3 are used for communicating the cavities at the upper end and the lower end of the flat-bottom auxiliary scale 3, so that movement clamping stagnation caused by pressure difference in the cavities at the two ends can be avoided.
The remote control camera 10 is electrically connected with the control line 12, and the remote control camera 10 is fixedly connected with the cradle head 11;
the display 14 is electrically connected with the controller 13, and the controller 13 is electrically connected with the control line 12; the controller 13 sends control instructions of movement direction and angle to the cradle head 11 through the control line 12.
The unit scale of the main scale 2 is 1mm, and the unit scale of the auxiliary scale 3 is 0.8mm, so the reading accuracy of the source length scale is 0.2mm, and the requirement of the source length error of 1mm is met.
Preferably, an air blowing device can be arranged in the thin-wall transparent conduit 8, and the air blowing device forces the auxiliary scale to return to the initial position through air flow.
Preferably, the controller 13 is added with image recognition software, and the image recognition software has the functions of automatically reading, displaying and recording the source position.
As a preferable scheme, a radioactive source cutting sleeve device is added on the flat-bottom scale auxiliary ruler 3, the flat-bottom scale auxiliary ruler 3 is connected with the radioactive source 4 when the radioactive source 4 is conveyed, and the flat-bottom scale auxiliary ruler 3 is separated from the cutting sleeve when the radioactive source 4 is recovered.
In summary, the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The outlet source measuring system for the rear-loading radiation therapy machine is characterized by comprising a main ruler component, an auxiliary ruler component, a camera shooting component and a display control unit;
the main scale assembly is vertically arranged on an external workbench, the auxiliary scale assembly is arranged on the main scale assembly, the radioactive source to be measured is arranged on the auxiliary scale assembly in a matched mode and moves up and down along the vertical direction, and the source length is displayed by reading scales on the main scale assembly and the auxiliary scale assembly at the initial position;
the camera shooting assembly shoots, stores and records the source-out process under the control of the display control unit;
the display control unit sends a control instruction to the camera shooting assembly and controls the shooting position and angle; the auxiliary ruler component comprises a thin-wall transparent conduit and a flat-bottom graduated auxiliary ruler; the flat-bottom scale auxiliary ruler is provided with an air hole and five-scale dividing lines, the air hole penetrates through the upper end face and the lower end face of the flat-bottom scale auxiliary ruler, and the spacing between the lines in the five-scale dividing lines is 0.8mm; the flat-bottom scale auxiliary ruler is arranged in the thin-wall transparent conduit and is in clearance fit with the inner wall of the conduit, and the flat-bottom scale auxiliary ruler freely slides down in the thin-wall transparent conduit under the action of gravity.
2. The post-load radiation therapy apparatus outlet source measurement system of claim 1, wherein said main scale assembly comprises a bracket, a graduated main scale, a radiation source conduit connector and a baffle; the radioactive source catheter connector is fixedly connected with the main scale and positioned below one side of the main scale with the scale marks, and the baffle is fixedly connected with the bracket and positioned above one side of the main scale with the scale marks; the dividing line spacing on the dividing main scale is 1mm.
3. The source measuring system for the rear-loading radiotherapy machine of claim 2, wherein the thin-wall transparent conduit is fixedly connected with the bracket and is correspondingly positioned at one side of the scale main scale with scale marks, the lower end of the thin-wall transparent conduit is fixedly connected with the radioactive source conduit joint, and the upper end of the thin-wall transparent conduit is positioned below the baffle and is in clearance with the baffle;
the external applicator hose is connected with the radioactive source catheter connector in a clamping sleeve manner, the radioactive source hose and the thin-wall transparent catheter are connected to form a pipeline, and the radioactive source is fixedly connected with the source braid and then is arranged in the pipeline formed by connecting the radioactive source hose and the thin-wall transparent catheter and can freely slide.
4. The post-load radiation therapy apparatus source measurement system of claim 3, wherein said camera assembly comprises a remote control camera, a cradle head, and a control line; the remote control camera is electrically connected with the control line and fixedly connected with the cradle head.
5. The post-load radiation therapy machine outlet source measurement system of claim 4, wherein said display control unit comprises a display and a controller; the display is electrically connected with the controller, the controller is electrically connected with the control line, and the controller sends control instructions of the movement direction and the movement angle to the cradle head through the control line.
6. The post-load radiation therapy apparatus source measurement system of claim 5, wherein an air blowing device is disposed in the thin-walled transparent conduit, the air blowing device forcing the secondary scale back to the initial position by an air flow.
7. The source-out measurement system for a post-load radiation therapy machine according to claim 6, wherein image recognition software is added to the controller, and the image recognition software has functions of automatically reading, displaying and recording a source-out position.
8. The source-out measurement system for a post-load radiation therapy machine of any one of claims 1-7, wherein a radiation source ferrule device is added to the flat-bottom scale, the flat-bottom scale is connected with the radiation source when the radiation source is conveyed, and the flat-bottom scale is disconnected from the ferrule when the radiation source is recovered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111341540.2A CN114053600B (en) | 2021-11-12 | 2021-11-12 | Source-outlet length measuring system for rear-loading radiation therapy apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111341540.2A CN114053600B (en) | 2021-11-12 | 2021-11-12 | Source-outlet length measuring system for rear-loading radiation therapy apparatus |
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| Publication Number | Publication Date |
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| CN114053600A CN114053600A (en) | 2022-02-18 |
| CN114053600B true CN114053600B (en) | 2023-07-28 |
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| CN202111341540.2A Active CN114053600B (en) | 2021-11-12 | 2021-11-12 | Source-outlet length measuring system for rear-loading radiation therapy apparatus |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018058291A1 (en) * | 2016-09-27 | 2018-04-05 | 深圳先进技术研究院 | Applicator positioning method based on magnetic resonance imaging, and applicator |
| JP2018081115A (en) * | 2018-02-09 | 2018-05-24 | 株式会社キーエンス | Image measurement instrument |
| CN207675080U (en) * | 2018-01-17 | 2018-07-31 | 重庆医科大学附属永川医院 | A kind of detection ruler for detecting radiation therapy bed kinematic accuracy |
| CN111765830A (en) * | 2020-08-04 | 2020-10-13 | 山东新华医疗器械股份有限公司 | After-loading machine goes out source length detection device |
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2021
- 2021-11-12 CN CN202111341540.2A patent/CN114053600B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018058291A1 (en) * | 2016-09-27 | 2018-04-05 | 深圳先进技术研究院 | Applicator positioning method based on magnetic resonance imaging, and applicator |
| CN207675080U (en) * | 2018-01-17 | 2018-07-31 | 重庆医科大学附属永川医院 | A kind of detection ruler for detecting radiation therapy bed kinematic accuracy |
| JP2018081115A (en) * | 2018-02-09 | 2018-05-24 | 株式会社キーエンス | Image measurement instrument |
| CN111765830A (en) * | 2020-08-04 | 2020-10-13 | 山东新华医疗器械股份有限公司 | After-loading machine goes out source length detection device |
Non-Patent Citations (2)
| Title |
|---|
| RL_HZJ18型后装机出源长度的测量;倪玲琴;刘艳梅;徐彩霞;;医疗卫生装备(第04期);全文 * |
| 后装治疗机施源管角度变化对出源精度及放疗剂量影响分析;徐金济;蔡倩倩;成俊;周春;;齐齐哈尔医学院学报(第24期);全文 * |
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| CN114053600A (en) | 2022-02-18 |
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