CN202256691U - Phantom for measuring radiation dose distribution - Google Patents
Phantom for measuring radiation dose distribution Download PDFInfo
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- CN202256691U CN202256691U CN2011202490717U CN201120249071U CN202256691U CN 202256691 U CN202256691 U CN 202256691U CN 2011202490717 U CN2011202490717 U CN 2011202490717U CN 201120249071 U CN201120249071 U CN 201120249071U CN 202256691 U CN202256691 U CN 202256691U
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Abstract
The utility model relates to accessories of radiation metering appliances, in particular to a phantom for measuring radiation dose distribution, which is characterized by being formed by sequentially overlapping a water tank (1), a finger-shaped thimble ionization chamber probe installation plate (2), a thickness adjusting plate assembly, a two-dimensional thimble ionization chamber array (4) and a back scattering plate (5) from top to bottom. A location mark (6) is arranged at the geometrical center of the upper surface of the water tank (1). A finger-shaped thimble ionization chamber probe (8) is arranged in the finger-shaped thimble ionization chamber probe installation plate (2), the finger-shaped thimble ionization chamber probe (8) is inserted from the lateral face of the finger-shaped thimble ionization chamber probe installation plate (2), and the finger-shaped head portion of the finger-shaped thimble ionization chamber probe (8) stretches to the lower portion of the center of the location mark (6). The thickness adjusting plate assembly is formed by overlapping a plurality of adjusting plates (3), and a layer of film (11) used for recording dose distribution information is arranged between every two adjacent adjusting plates (3). The finger-shaped thimble ionization chamber probe installation plate (2), the adjusting plates (3) and the back scattering plate (5) are all made of solid water materials.
Description
Technical field
The utility model relates to the annex of radiation-measuring instrument, is specifically related to a kind of device of measuring radiation dose distribution.
Background technology
Radiation therapy is one of critical treatment means of present cancer.Before accurate radiotherapy technology such as adopting the directed radiotherapy of three-dimensional conformal commonly used, intensity modulated radiation therapy and 3 D stereo is carried out radiotherapy to patient, need utilize the radiotherapy planning system to work out patient's radiotherapy treatment planning.For the purpose of prudent; Before implementing radiotherapy treatment planning, adopt following method to carry out simulation test usually: to simulate irradiation in earlier to phantom; The measuring system of in irradiation process, forming through ionization chamber, ionization matrix and film etc.; Test target area and the dose point or the two-dimentional dose distribution of normal surrounding tissue under these plans, the dose distribution that again institute's dose is distributed with the planning system design compares, and passes judgment on the feasibility of plans with this.The phsyical density and the human muscle of the phantom described in the above-mentioned test are approaching, with measurement environment truly.Granted publication number discloses a kind of " measurement phantom " for the utility model patent of CN 201569746U; This measurement phantom is made up of die body and the bracing frame that supports die body; Wherein said die body is measured by polylith that plate is superimposed to be formed, and each measures the through hole of plate to be distributed with a plurality of perforations in the body.In the above-mentioned patent scheme; Owing to be provided with a plurality of through holes in the described measurement phantom; Therefore the probe of measuring dosage can inject the dosage of surveying diverse location in the phantom in the different through holes; But this measurement phantom can only carry out the dosage measurement of diverse location point, and can't carry out a certain or the interior dosage distribution measuring of certain several section.Publication number is that the application for a patent for invention of CN101907721A discloses " a kind of measurement phantom "; This measurement phantom mainly by die body, be located at the solid of revolution in the die body and the measurement plate that is located in the solid of revolution constitutes; Wherein, Described solid of revolution can be done gyration in die body, on the described measurement plate radiation detectors such as ionization chamber, thermoluminescence, film can be installed.Measurement plate in this patent scheme can rotate in die body with solid of revolution; Therefore can measure dosage from the source of penetrating of different directions; But only have one in the described measurement section and measure plate; Real time probe and film isodose recorder spares such as ionization chamber or thermoluminescence can't be installed simultaneously, can not with the supporting use of two-dimentional ionization chamber matrix, therefore can not carry out best radiation dose and explore.
Summary of the invention
The utility model technical matters to be solved is the phantom that supplies a kind of improved measuring radiation dose distribution, and this phantom can be explored best radiation dose to each patient's individuality.
The utility model solves this technical problem the technical scheme that is adopted:
A kind of phantom of measuring radiation dose distribution; It is characterized in that; It is by water tank, thimble ionization chamber probe installing plate, thickness adjusted board component, two-dimentional ionization chamber matrix and the backscattering plate is superimposed successively from top to bottom constitutes, and wherein, the geometric center of the upper surface of described water tank is provided with telltale mark; Be provided with the thimble ionization chamber probe in the described thimble ionization chamber probe installing plate, this thimble ionization chamber probe is inserted by the side of thimble ionization chamber probe installing plate, and the measuring center of its finger-like head extends the bottom at said telltale mark center; Described thickness adjusted board component is formed by stacking by some adjustable plates, and is provided with the film that one deck is used to write down the dosage distributed intelligence between the two adjacent adjustable plates; Described thimble ionization chamber probe installing plate, adjustable plate and backscattering plate are processed by the solid water material.
In above-mentioned technical scheme,, between the upper surface of described water tank and the side arc transition face in order to reduce because of launched field shines the Rapid Dose Calculation error that causes on the right angle rib.
In the described phantom of the utility model, the thickness of described adjustable plate is 1mm, 2mm, 5mm or 10mm, so that detect and write down the lesions position interior dose distribution of normal tissues of different section on every side.
The described phantom of the utility model is provided with thimble ionization chamber probe, film and two-dimentional ionization chamber matrix downwards successively from the telltale mark of irradiation field; Wherein, Superposed thimble ionization chamber probe can be used for dose calibration and dose point is measured; The two-dimentional ionization chamber matrix that is positioned at the bottom can carry out the online in real time measurement of two-dimentional dose distribution, analyze, and film can be used for the measurement and the off-line analysis of two-dimentional dose distribution.Therefore, the described phantom of the utility model is the two-dimentional dose distribution on measurement point dosage and a plurality of planes in real time, for the exploration of best radiation dose and the formulation of carefully improving radiotherapy planning provide genuine and believable data.
Description of drawings
Fig. 1～Fig. 3 is the structural representation of a specific embodiment of the described phantom of the utility model, and wherein Fig. 1 is a front view, and Fig. 2 is a vertical view, and Fig. 3 is the A-A cut-open view of Fig. 1.
Fig. 4 is the structural representation of another specific embodiment of the described phantom of the utility model.
Embodiment
Referring to Fig. 1～Fig. 3; The phantom of the measuring radiation dose distribution of the utility model is cuboid; It is made up of superimposed successively from top to bottom water tank 1, thimble ionization chamber probe installing plate 2, thickness adjusted board component, two-dimentional ionization chamber matrix 4 and backscattering plate 5; Wherein, it is the square of 100mm and the telltale mark 6 that the cruciform mark constitutes that the center of the upper surface of described water tank 1 is provided with by a length of side, during use the cross center of launched field is adjusted to described cruciform mark to coincide; Also being provided with the through hole that is used for water filling or draining on the upper surface of water tank 1 and being matched with the lid 9 on this through hole, is the arc transition face between the upper surface of water tank 1 and each side.The middle part of one side of described thimble ionization chamber probe installing plate 2 is provided with a groove that extends to the center of thimble ionization chamber probe installing plate 2; Be embedded with one on this groove and transplant a cutting 7 with the rectangle of its coupling; Be provided with circular jack in this cutting 7; Thimble ionization chamber probe 8 is inserted on this jack; Is connected with the computer system of calculating dosage when described thimble ionization chamber probe 8 uses, and pop one's head in measuring center be positioned at the surperficial cruciform mark of water tank under, make the launched field central shaft pass the measuring center and the cruciform mark of probe.Described thickness adjusted board component by polylith thickness be 10mm, 5mm, 2mm and 1mm adjustable plate 3 on demand thickness be formed by stacking from down to up; Can establish the film 10 that a slice is used to write down dose distribution between the per two adjacent adjustable plates 3, the sum of film is decided on demand.Described two-dimentional ionization chamber matrix 4 is a plane dose detector commonly used in this area, is connected with supporting computer system during use, can carry out the analysis of real-time online two dimension dosage distribution measuring.Described backscattering plate 5 is mainly used in provides the backscattering ray, to reach electronic equilibrium.Because the tissue density of water and the tissue density of human body are approaching, therefore above-mentioned thimble ionization chamber probe installing plate 2, adjustable plate 3 and backscattering plate 5 are processed by the solid water material.
Referring to Fig. 4; The difference of present embodiment and embodiment 1 is the quantity and the thickness of adjustable plate 3; Thickness adjusted board component in this example is that each one of the adjustable plate 3 of 10mm, 5mm and 2mm is formed by stacking from top to bottom by thickness, be provided with between the per two adjacent adjustable plates 3 one be used to write down dose distribution film 10 (totally two).Through adopting the adjustable plate 3 of different-thickness, can regulate the position of two-dimentional ionization chamber matrix 4 and film 10, thereby realize dosage distribution measuring and record on the different section.
Claims (3)
1. the phantom of a measuring radiation dose distribution; It is characterized in that; It is by water tank (1), thimble ionization chamber probe installing plate (2), thickness adjusted board component, two-dimentional ionization chamber matrix (4) and the superimposed successively from top to bottom formation of backscattering plate (5); Wherein, the geometric center of the upper surface of described water tank (1) is provided with telltale mark (6); Be provided with thimble ionization chamber probe (8) in the described thimble ionization chamber probe installing plate (2), this thimble ionization chamber probe (8) is inserted by the side of thimble ionization chamber probe installing plate (2), and the measuring center of its finger-like head extends the bottom at said telltale mark (6) center; Described thickness adjusted board component is formed by stacking by some adjustable plates (3), and is provided with the film (10) that one deck is used to write down the dosage distributed intelligence between the two adjacent adjustable plates (3); Described thimble ionization chamber probe installing plate (2), adjustable plate (3) and backscattering plate (5) are processed by the solid water material.
2. the phantom of a kind of measuring radiation dose distribution according to claim 1 is characterized in that, is the arc transition face between the upper surface of described water tank (1) and the side.
3. the phantom of a kind of measuring radiation dose distribution according to claim 1 and 2 is characterized in that, the thickness of described adjustable plate (3) is 1mm, 2mm, 5mm or 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202490717U CN202256691U (en) | 2011-07-14 | 2011-07-14 | Phantom for measuring radiation dose distribution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202490717U CN202256691U (en) | 2011-07-14 | 2011-07-14 | Phantom for measuring radiation dose distribution |
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| Publication Number | Publication Date |
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| CN202256691U true CN202256691U (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011202490717U Expired - Fee Related CN202256691U (en) | 2011-07-14 | 2011-07-14 | Phantom for measuring radiation dose distribution |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698795A (en) * | 2013-12-10 | 2014-04-02 | 广州医科大学附属肿瘤医院 | Irradiation dose detecting body mold for high-dose-rate short-range treatment radioactive source |
| CN104857639A (en) * | 2015-04-23 | 2015-08-26 | 中国科学院近代物理研究所 | Three-dimensional dosage verification apparatus and method thereof |
| CN106730423A (en) * | 2017-03-10 | 2017-05-31 | 山东中测校准质控技术有限公司 | A kind of new anti-expansion Water ball and application for radiotherapy detection |
| CN106901764A (en) * | 2017-03-21 | 2017-06-30 | 泰山医学院 | A kind of PET/CT image quality detection body mould of apery head and preparation method thereof |
| CN106901765A (en) * | 2017-03-21 | 2017-06-30 | 泰山医学院 | A kind of PET/MR image quality detection body mould of apery head and preparation method thereof |
| CN106923855A (en) * | 2017-03-21 | 2017-07-07 | 泰山医学院 | A kind of animal PET/CT image quality detects body mould |
| CN106923854A (en) * | 2017-03-21 | 2017-07-07 | 泰山医学院 | A kind of comprehensive Quality Control body mould suitable for PET/CT |
| CN112755412A (en) * | 2021-02-26 | 2021-05-07 | 张宏涛 | External measuring device and method for radioactive particle implantation dose |
-
2011
- 2011-07-14 CN CN2011202490717U patent/CN202256691U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698795A (en) * | 2013-12-10 | 2014-04-02 | 广州医科大学附属肿瘤医院 | Irradiation dose detecting body mold for high-dose-rate short-range treatment radioactive source |
| CN103698795B (en) * | 2013-12-10 | 2016-08-31 | 广州医科大学附属肿瘤医院 | A kind of Effect of HDR Brachytherapy radiation source dose measurement body mould |
| CN104857639A (en) * | 2015-04-23 | 2015-08-26 | 中国科学院近代物理研究所 | Three-dimensional dosage verification apparatus and method thereof |
| CN106730423A (en) * | 2017-03-10 | 2017-05-31 | 山东中测校准质控技术有限公司 | A kind of new anti-expansion Water ball and application for radiotherapy detection |
| CN106730423B (en) * | 2017-03-10 | 2023-04-14 | 山东中测校准质控技术有限公司 | Anti-expansion water mold body for radiotherapy detection and application |
| CN106901764A (en) * | 2017-03-21 | 2017-06-30 | 泰山医学院 | A kind of PET/CT image quality detection body mould of apery head and preparation method thereof |
| CN106901765A (en) * | 2017-03-21 | 2017-06-30 | 泰山医学院 | A kind of PET/MR image quality detection body mould of apery head and preparation method thereof |
| CN106923855A (en) * | 2017-03-21 | 2017-07-07 | 泰山医学院 | A kind of animal PET/CT image quality detects body mould |
| CN106923854A (en) * | 2017-03-21 | 2017-07-07 | 泰山医学院 | A kind of comprehensive Quality Control body mould suitable for PET/CT |
| CN112755412A (en) * | 2021-02-26 | 2021-05-07 | 张宏涛 | External measuring device and method for radioactive particle implantation dose |
| CN112755412B (en) * | 2021-02-26 | 2022-10-11 | 张宏涛 | External measuring device and method for radioactive particle implantation dose |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| 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: 20120530 Termination date: 20180714 |