CN114053600A - Outlet length measuring system for back-loading radiotherapy machine - Google Patents
Outlet length measuring system for back-loading radiotherapy machine Download PDFInfo
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- CN114053600A CN114053600A CN202111341540.2A CN202111341540A CN114053600A CN 114053600 A CN114053600 A CN 114053600A CN 202111341540 A CN202111341540 A CN 202111341540A CN 114053600 A CN114053600 A CN 114053600A
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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
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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
- 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
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Abstract
The invention discloses a source-outlet length measuring system for a rear-mounted radiotherapy machine, and belongs to the technical field of radiotherapy instruments. The system comprises a main scale component, an auxiliary scale component, a camera 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, a radioactive source to be measured is arranged on the auxiliary scale assembly in a matching way 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 component shoots, stores and records the source 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 can ensure the measurement precision.
Description
Technical Field
The invention belongs to the technical field of radiotherapy equipment, and particularly relates to a source-outlet length measuring system for a rear-mounted radiotherapy machine.
Background
The after-loading radiotherapy machine is a device for treating tumors by utilizing rays generated by radioactive sources, the radioactive sources are fixedly connected with source braids, the radioactive sources are transmitted into a source applicator tube cavity which is preset near the tumors in a human body through a transmission device, and the residence position and the time of the radioactive sources are controlled to control the irradiation dose of the radioactive sources to the tumors. Because of the operation error of the transmission and control device, the after-loading radiotherapy machine needs to regularly 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.
In the national standard, the source positioning error is less than 1mm, a ruler with the minimum graduation of 1mm is adopted when the source length is measured at present, the error range can be explained from the observation angle, but the error caused by human factors such as an observer, the observation angle and the like is large during specific counting.
Disclosure of Invention
In view of this, the present invention provides a source-exiting length measuring system for a back-loading radiotherapy machine, which can remotely measure the distance transmitted by a radioactive source and ensure the measuring accuracy.
A source-outlet length measuring system for a rear-mounted radiotherapy machine comprises a main scale assembly, an auxiliary scale assembly, a camera 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, a radioactive source to be measured is arranged on the auxiliary scale assembly in a matching way 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 process under the control of the display control unit;
and 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 joint and a baffle plate; the radioactive source catheter joint is fixedly connected with the scale main ruler and is positioned below one side of the scale main ruler with the scale marks, and the baffle is fixedly connected with the bracket and is positioned above one side of the scale main ruler with the scale marks; the distance between the scribed lines on the main scale is 1 mm.
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 air guide holes and five-degree scale lines, the air guide holes penetrate through the upper end face and the lower end face of the flat bottom scale auxiliary ruler, and the distance between the scale lines in the five-degree scale lines is 0.8 mm; 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 downwards in the thin-wall transparent conduit under the action of gravity.
Furthermore, the thin-wall transparent catheter is fixedly connected with the bracket and correspondingly positioned on one side of the graduated main scale, which is provided with the graduation lines, the lower end of the thin-wall transparent catheter is fixedly connected with the radioactive source catheter joint, and the upper end of the thin-wall transparent catheter is positioned below the baffle and has a gap with the baffle;
the external applicator hose is connected with the radioactive source conduit connector in a clamping sleeve mode, the applicator hose is connected with the thin-wall transparent conduit to form a pipeline, and the radioactive source is fixedly connected with the source braid and then placed in the pipeline formed by the connection of the applicator hose and the thin-wall transparent conduit and can freely slide.
Furthermore, the camera shooting assembly comprises a remote control camera, a holder and a control line; the remote control camera is electrically connected with the control line and is fixedly connected with the holder.
Further, the display control unit includes 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 angle to the holder through the control line.
Further, an air blowing device is arranged in the thin-wall transparent conduit, and the air blowing device forces the auxiliary graduated 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.
Furthermore, a radioactive source clamping sleeve device is additionally arranged on the flat-bottom graduated minor scale, the flat-bottom graduated minor scale is connected with a radioactive source during radioactive source transmission, and the flat-bottom graduated minor scale is separated from the clamping sleeve during radioactive source recovery.
Has the advantages that:
1. the invention installs the auxiliary ruler component on the main ruler component, the radioactive source to be measured is installed on the auxiliary ruler component in a matching way and moves up and down along the vertical direction, the source length is displayed by reading the scales on the main ruler component and the auxiliary ruler component on the initial position, the camera component takes pictures, 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 graduated auxiliary scale, the distance between scribed lines on the main scale is 1mm, the distance between scribed lines in the five-degree scribed lines of the flat-bottom graduated auxiliary scale is 0.8mm, the difference between the scribed line distances of the main scale and the auxiliary scale reads a fractional part of the scale, the fractional value is easy to read, the reading precision of the position of the fractional value is improved, and the graduation of the auxiliary scale can be set according to the precision requirement.
3. The main scale component of the invention adopts the replaceable radioactive source conduit joint, and the conduit joints with different specifications are replaced aiming at applicators of different manufacturers, thus being suitable for the position measurement of the source outlet of different applicators and having the characteristic of strong adaptability.
Drawings
FIG. 1 is a block diagram of an exit length measurement system for an afterloader radiation therapy machine according to the present invention;
fig. 2 is a partially enlarged view of the scale main scale, scale sub scale and source location indication of the present invention.
The system comprises a support 1, a scale main scale 2, a scale auxiliary scale 3, a radioactive source 4, a source braid 5, a radioactive source catheter joint 6, a source applicator hose 7, a thin-wall transparent catheter 8, a baffle 9, a camera 10, a holder 11, a control line 12, a controller 13 and a display 14.
Detailed Description
The invention is described in detail below by way of example with reference to the accompanying drawings.
As shown in fig. 1, the invention provides a source-exiting length measuring system for a back-loading radiotherapy machine, which comprises a main scale assembly, an auxiliary scale assembly, a camera assembly and a display control unit;
wherein, the main scale subassembly includes support 1, scale main scale 2, radiation source pipe connects 6 and baffle 9, and the groove interval on the scale main scale 2 is 1 mm.
The auxiliary ruler component comprises a thin-wall transparent conduit 8 and a flat-bottom graduated auxiliary ruler 3, wherein the auxiliary ruler 3 is provided with air guide holes and five-degree graduated lines, the air guide holes penetrate through the upper end face and the lower end face of the flat-bottom graduated auxiliary ruler 3, and the distance between the five-degree graduated lines is 0.8 mm.
The camera assembly comprises a remote control camera 10, a cloud platform 11 and a control line 12.
The display control unit includes a display 14 and a controller 13.
The graduated main scale 2 is fixedly connected with the bracket 1, the radioactive source catheter joint 6 is fixedly connected with the graduated main scale 2, and the baffle plate 9 is fixedly connected with the bracket 1; the flat-bottom scale auxiliary ruler 3 is arranged in the thin-wall transparent conduit 8 and is in clearance fit with the conduit 8, the scale auxiliary ruler 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 has a clearance with the baffle 9.
The external applicator hose 7 is connected with the radioactive source conduit joint 6 in a clamping way, so that the applicator hose 7 and the thin-wall transparent conduit 8 are connected to form a pipeline, the radioactive source 4 and the source braid 5 are fixedly connected and then are arranged in the pipeline formed by connecting the applicator hose 7 and the thin-wall transparent conduit 8 and can freely slide, and the position relationship is shown in figure 2.
The radioactive source applying device hose 7 is connected with the radioactive source conduit joint 6 in a clamping sleeve mode, the radioactive source 4 is fixedly connected with the source braid 5 and freely slides in a pipeline formed by connecting the radioactive source applying device hose 7 and the thin-wall transparent conduit 8, the radioactive source 4 and the flat-bottom scale auxiliary 3 synchronously slide in the pipeline because the front end of the radioactive source 4 is in contact with the flat-bottom scale auxiliary 3, and air guide holes in the flat-bottom scale auxiliary 3 are used for communicating cavities at the upper end and the lower end of the flat-bottom scale auxiliary 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 holder 11;
the display 14 is electrically coupled with the controller 13, and the controller 13 is electrically coupled with the control line 12; the controller 13 sends control commands of the moving direction and angle to the pan/tilt head 11 through the control line 12.
The unit scale of the main scale 2 is 1mm, and the unit scale of the flat-bottom auxiliary scale 3 is 0.8mm, so that the reading precision of the source length scale is 0.2mm, and the requirement of 1mm of source length error is met.
Preferably, an air blowing device can be arranged in the thin-wall transparent conduit 8, and the air blowing device forces the scale auxiliary ruler to return to the initial position through air flow.
Preferably, image recognition software is added to the controller 13, and the image recognition software has a function of automatically reading, displaying, and recording the source position.
As preferred scheme, increase radiation source cutting ferrule device on the flat bottom scale sublance 3, flat bottom scale sublance 3 is connected with radiation source 4 during radiation source 4 conveying, and when radiation source 4 retrieved, flat bottom scale sublance 3 was thrown off with the cutting ferrule.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A source-outlet length scale for a rear-mounted radiotherapy machine is characterized in that the system comprises a main scale component, an auxiliary scale component, a camera 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, a radioactive source to be measured is arranged on the auxiliary scale assembly in a matching way 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 process under the control of the display control unit;
and the display control unit sends a control instruction to the camera shooting assembly and controls the shooting position and angle.
2. The source length scale for an afterloader radiation therapy machine according to claim 1, wherein said main scale assembly comprises a support, a graduated main scale, a radioactive source conduit connector, and a baffle; the radioactive source catheter joint is fixedly connected with the scale main ruler and is positioned below one side of the scale main ruler with the scale marks, and the baffle is fixedly connected with the bracket and is positioned above one side of the scale main ruler with the scale marks; the distance between the scribed lines on the main scale is 1 mm.
3. The source length scale for an afterloader as claimed in claim 2, wherein said sub-scale assembly comprises a thin-walled transparent tube and a flat-bottomed graduated sub-scale; the flat bottom scale auxiliary ruler is provided with air guide holes and five-degree scale lines, the air guide holes penetrate through the upper end face and the lower end face of the flat bottom scale auxiliary ruler, and the distance between the scale lines in the five-degree scale lines is 0.8 mm; 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 downwards in the thin-wall transparent conduit under the action of gravity.
4. The source-exiting length scale for afterloading radiotherapy machine according to claim 3, wherein said thin-walled transparent conduit is fixedly connected with the bracket and correspondingly located on the side of the main scale where the graduation lines are located, the lower end of the thin-walled transparent conduit is fixedly connected with the radioactive source conduit joint, the upper end of the thin-walled transparent conduit is located below the baffle plate and has a gap with the baffle plate;
the external applicator hose is connected with the radioactive source conduit connector in a clamping sleeve mode, the applicator hose is connected with the thin-wall transparent conduit to form a pipeline, and the radioactive source is fixedly connected with the source braid and then placed in the pipeline formed by the connection of the applicator hose and the thin-wall transparent conduit and can freely slide.
5. The afterloader radiotherapy machine source-exit length scale of claim 4, in which said camera assembly comprises a remote control camera, a pan-tilt and a control line; the remote control camera is electrically connected with the control line and is fixedly connected with the holder.
6. The afterloader radiotherapy machine exit length scale of claim 5, in which 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 angle to the holder through the control line.
7. The source length scale for an afterloader radiotherapy machine according to claim 6, wherein an air blowing device is provided in the thin-walled transparent tube, and the air blowing device forces the secondary scale to return to the initial position by air flow.
8. The after-loading radiation therapy machine source-exit length scale of claim 7, wherein image recognition software is added to said controller, said image recognition software having the function of automatically reading, displaying and recording the source-exit position.
9. The source-exiting length scale for a rear-loading radiotherapy machine according to any one of claims 1 to 8, wherein a radioactive source sleeve device is added on the flat-bottom graduated minor, the flat-bottom graduated minor is connected with the radioactive source during the radioactive source transmission, and the flat-bottom graduated minor is disconnected from the sleeve during the radioactive source recovery.
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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| CN114053600A true CN114053600A (en) | 2022-02-18 |
| CN114053600B CN114053600B (en) | 2023-07-28 |
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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 |
| 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)
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| 倪玲琴;刘艳梅;徐彩霞;: "RL_HZJ18型后装机出源长度的测量", 医疗卫生装备, no. 04 * |
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| CN114053600B (en) | 2023-07-28 |
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