CN103698795B - A kind of Effect of HDR Brachytherapy radiation source dose measurement body mould - Google Patents
A kind of Effect of HDR Brachytherapy radiation source dose measurement body mould Download PDFInfo
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- CN103698795B CN103698795B CN201310670041.7A CN201310670041A CN103698795B CN 103698795 B CN103698795 B CN 103698795B CN 201310670041 A CN201310670041 A CN 201310670041A CN 103698795 B CN103698795 B CN 103698795B
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Abstract
The invention discloses a kind of Effect of HDR Brachytherapy radiation source dose measurement body mould, including base plate, it is located on the upside of base plate and in being internally formed the external mold of cylindrical cavity and being located at cylindrical cavity and the interior mould that can rotate around the axis of cylindrical cavity, the upper surface of interior mould is provided with a centre bore inserted for outside applicating device at axis, is provided with some exposure dose test holes running through interior mould around centre bore.During use, using as the centre bore of mould in the applicating device insertion of radioactive source, coordinate the dose measuring systems probe inserting in exposure dose test hole, it is achieved for radioactive source measurement of multiple spot position in body mould；Simultaneously by cylindrical interior mould rotation in cylindrical cavity, can quickly realize multiple some dosage measurement on circumference.While the present invention accurately determines the spatial relation measured between point and radioactive source by above-mentioned design, can the dosage distribution characteristics on multiple points and a loop curve in measurement space.
Description
Technical field
The present invention is used for medical instruments field, particularly relates to a kind of close-range treatment radiation source dose measurement body mould.
Background technology
Radioactive source application in medical treatment has more than the history of 100 years, defeats malignant tumour to play extremely important effect for the mankind.At present, in the radiotherapy of tumour, the high dose rate miniature Iridium-192 source radio isotope produced by reactor has obtained widest application, this radio isotope can be made into external diameter about 1mm, the column radioactive source of length 4mm, together with it is tied with flexible steel wire bond, under the driving stepper motor that computer controls, match with applicating device, enter in natural tube chamber or the tissue of human body, design according to schedule, in human body, specific position stops the time specified, give the radioactive ray exposure dose that tissue is certain, reach radiocurable purpose, i.e. carry out in people's body cavity, plesioradiotherapy in pipe or between tissue.
Radiocurable most basic requirement is that exposure dose is accurate, and the accuracy of plesioradiotherapy dosage depends on the accurate measurement to radioactive source.Although, now widely used high dose rate miniature Iridium-192 source radioactive source has been carried out radioactive activity and demarcates when dispatching from the factory, and in radiotherapy is put into practice, for reaching the purpose of radiotherapy quality control, in addition it is also necessary to it is carried out radiating activity, exposure dose rate and spatial dose distribution thereof etc. and measures.At present, widely used 30cm × 30cm × 30cm, 20cm × 20cm × 10cm standard water die body in clinic, not only it is difficult to accurately determine the spatial relation measured between point and radioactive source, and, it is impossible to the multiple points in measurement space or the dosage distribution characteristics in a plane simultaneously.
Summary of the invention
For solving the problems referred to above, the present invention provides a kind of spatial relation that can accurately determine and measure between point and radioactive source, the Effect of HDR Brachytherapy radiation source dose measurement body mould of the multiple points in measurement space and the dosage distribution characteristics on a loop curve simultaneously.
The technical solution adopted for the present invention to solve the technical problems is: a kind of Effect of HDR Brachytherapy radiation source dose measurement body mould, including base plate, it is located on the upside of base plate and in being internally formed the external mold of cylindrical cavity and being located at cylindrical cavity and the interior mould that can rotate around the axis of cylindrical cavity, the upper surface of interior mould is provided with a centre bore inserted for outside applicating device at axis, is provided with some exposure dose test holes running through interior mould around centre bore.
Being further used as the improvement of technical solution of the present invention, the thimble ionization chamber mounting post also including embedding in exposure dose test hole and solid cylindricality plug-in unit, one end of thimble ionization chamber mounting post is provided with the blind hole inserted for thimble ionization chamber.
Being further used as the improvement of technical solution of the present invention, be provided with 5 exposure dose test holes around centre bore altogether, the axis spacing of 5 exposure dose test holes and interior mould is respectively 10mm, 20mm, 30mm, 40mm and 50mm.
Being further used as the improvement of technical solution of the present invention, base plate, external mold, interior mould, thimble ionization chamber mounting post and solid cylindricality plug-in unit are made by solid water material.
Being further used as the improvement of technical solution of the present invention, external mold is provided with angle instruction line in the outer of cylindrical cavity, and the upper surface of interior mould is provided with the cross hairs that Center-to-Center hole overlaps, and 5 exposure dose test holes are respectively positioned on cross hairs.
It is further used as the improvement of technical solution of the present invention, base plate is provided with at the axis of cylindrical cavity the central shaft that support internal mould rotates.
Being further used as the improvement of technical solution of the present invention, interior mould includes that split setting and the epimere and hypomere, the lower surface of epimere and/or the upper surface of hypomere that are connected by two latches are provided with some pits for laying Annual dose around centre bore.
Being further used as the improvement of technical solution of the present invention, overall epimere and the hypomere in rectangular-shaped and corresponding interior mould of external mold is divided into upper die and lower die, and upper die and lower die connect by the pin of corner is fixing.
Beneficial effects of the present invention: in this Effect of HDR Brachytherapy radiation source dose measurement body mould, base plate arranges interior mould and external mold, during use, using as the centre bore of mould in the applicating device insertion of radioactive source, coordinate the dose measuring systems probe inserting in exposure dose test hole, it is achieved for radioactive source dosage measurement of multiple spot position in body mould；Simultaneously by cylindrical interior mould rotation in external mold cylindrical cavity, can quickly realize multiple some dosage measurement on circumference.While the present invention accurately determines the spatial relation measured between point and radioactive source by above-mentioned design, it is possible to the dosage distribution characteristics on multiple points and a loop curve in measurement space.
Accompanying drawing explanation
The invention will be further described below in conjunction with the accompanying drawings:
Fig. 1 is embodiment of the present invention overall structure schematic diagram；
Fig. 2 is embodiment of the present invention structure top view；
Fig. 3 is embodiment of the present invention thimble ionization chamber mounting post structural representation.
Detailed description of the invention
With reference to Fig. 1～Fig. 3, the invention provides a kind of Effect of HDR Brachytherapy radiation source dose measurement body mould, including base plate 1, be located on the upside of base plate 1 and in being internally formed the external mold 2 of cylindrical cavity and being located at cylindrical cavity and the interior mould 3 that can rotate around the axis of cylindrical cavity.
Concrete, external mold 2 entirety is rectangular-shaped, and specification is 24cm × 24cm × 15cm, and being divided into upper mold 21 and lower mold 22, upper mold 21 and lower mold 22 form-factor is 24cm × 24cm × 7.5cm, is connected and detachable by the pin 4 of corner between upper mold 21 and lower mold 22.The aperture of external mold 2 inner cylinder inner chamber is 20cm, and interior mould 3 is placed in cylindrical cavity, and the rotating shaft 11 around base plate 1 center carries out 360 degree and arbitrarily rotates.Wherein the specification of base plate 1 is 24cm × 24cm × 1cm.
The diameter 20cm of interior mould 3, highly 15cm, be divided into epimere 31 and hypomere 32, is connected by two latches 5 between epimere 31 and hypomere 32.The upper surface of mould 3 is provided with a centre bore 33 inserted for outside applicating device at axis, it is respectively equipped with 5 exposure dose test holes 34 running through interior mould 3 around centre bore 33, the axis spacing of 5 exposure dose test holes 34 and interior mould 3 is respectively 10mm, 20mm, 30mm, 40mm and 50mm, external mold 2 is provided with angle instruction line 23 in the outer of cylindrical cavity, carve a line for every 5 degree, the upper surface of interior mould 3 is provided with 35,5 exposure dose test holes 34 of cross hairs of Center-to-Center hole 33 coincidence and is respectively positioned on cross hairs 35.The thimble ionization chamber mounting post 6 also including embedding in exposure dose test hole 34 and solid cylindricality plug-in unit, one end of thimble ionization chamber mounting post 6 is provided with the blind hole 61 inserted for thimble ionization chamber, wherein thimble ionization chamber mounting post 6 is for thimble ionization chamber fixed installation in exposure dose test hole 34, solid cylindricality plug-in unit is stifled for adding when exposure dose test hole 34 is vacant, and above-mentioned base plate 1, external mold 2, mould 3, thimble ionization chamber mounting post 6 and solid cylindricality plug-in unit are made by solid water material.
In addition, the lower surface of the epimere of mould 3 and/or the upper surface of hypomere around centre bore 33 in 10cm × 10cm region, according to 10mm × 10mm spacing, it is provided with the pit 36 of 100 3mm × 3mm × 1mm, for laying Annual dose, therefore, the plane dosage distribution measuring in the range of available Annual dose carries out 10cm × 10cm simultaneously.
In this Effect of HDR Brachytherapy radiation source dose measurement body mould, base plate 1 arranges interior mould 3 and external mold 2, during use, using as the centre bore 33 of mould 3 in the applicating device insertion of radioactive source, coordinate and insert the thimble ionization chamber in exposure dose test hole 34, by dose signal conduction to outside dosemeter, it is achieved for radioactive source dosage measurement of multiple spot position in body mould；Simultaneously by the cylindrical interior mould 3 rotation in external mold 2 cylindrical cavity, can quickly realize multiple some dosage measurement on circumference.While the present invention accurately determines, by above-mentioned design, the spatial relation measured between point and radioactive source, it is possible to the dosage distribution characteristics in multiple points, a loop curve or a plane in measurement space.
Certainly, the invention is not limited to above-mentioned embodiment, those of ordinary skill in the art also can make equivalent variations or replacement on the premise of spirit of the present invention, and modification or the replacement of these equivalents are all contained in the application claim limited range.
Claims (6)
- null1. an Effect of HDR Brachytherapy radiation source dose measurement body mould，It is characterized in that: include base plate、It is located on the upside of described base plate and in being internally formed the external mold of cylindrical cavity and being located at cylindrical cavity and the interior mould that can rotate around the axis of described cylindrical cavity，The upper surface of described interior mould is provided with a centre bore inserted for outside applicating device at axis，It is provided with some exposure dose test holes running through interior mould around described centre bore，Also include embedding the thimble ionization chamber mounting post in described exposure dose test hole and solid cylindricality plug-in unit，One end of described thimble ionization chamber mounting post is provided with the blind hole inserted for thimble ionization chamber，Described interior mould includes that split arranges and pass through epimere and the hypomere that two latches connect，The lower surface of described epimere and/or the upper surface of hypomere are provided with some pits for laying Annual dose around described centre bore.
- Effect of HDR Brachytherapy radiation source dose measurement body mould the most according to claim 1, it is characterized in that: be provided with 5 exposure dose test holes altogether around described centre bore, the axis spacing of 5 described exposure dose test holes and interior mould is respectively 10mm, 20mm, 30mm, 40mm and 50mm.
- Effect of HDR Brachytherapy radiation source dose measurement body mould the most according to claim 1, it is characterised in that: described base plate, external mold, interior mould, thimble ionization chamber mounting post and solid cylindricality plug-in unit are made by solid water material.
- Effect of HDR Brachytherapy radiation source dose measurement body mould the most according to claim 2, it is characterized in that: described external mold is provided with angle instruction line in the outer of cylindrical cavity, the upper surface of described interior mould is provided with the cross hairs that center overlaps with described centre bore, and 5 described exposure dose test holes are respectively positioned on described cross hairs.
- 5. according to the Effect of HDR Brachytherapy radiation source dose measurement body mould described in any one of Claims 1 to 4, it is characterised in that: it is provided with at the axis of cylindrical cavity on described base plate and supports the central shaft that described interior mould rotates.
- Effect of HDR Brachytherapy radiation source dose measurement body mould the most according to claim 1, it is characterized in that: overall epimere and the hypomere in rectangular-shaped and corresponding interior mould of described external mold is divided into upper die and lower die, described upper die and lower die connect by the pin of corner is fixing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310670041.7A CN103698795B (en) | 2013-12-10 | 2013-12-10 | A kind of Effect of HDR Brachytherapy radiation source dose measurement body mould |
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| CN201310670041.7A CN103698795B (en) | 2013-12-10 | 2013-12-10 | A kind of Effect of HDR Brachytherapy radiation source dose measurement body mould |
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| CN103698795B true CN103698795B (en) | 2016-08-31 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104189993B (en) * | 2014-08-14 | 2016-08-31 | 广州医科大学附属肿瘤医院 | A kind of radiotherapy plan simulation and 3-dimensional dose distribution tester |
| CN105807306B (en) * | 2016-04-25 | 2019-03-29 | 张宏涛 | A kind of the radiation dose measurement device and its measurement method of radioactive particle |
| CN108776351A (en) * | 2018-06-14 | 2018-11-09 | 山东中测校准质控技术有限公司 | A kind of radioactive source activity measurement well-type ionization chamber |
| CN110794443B (en) * | 2019-10-23 | 2021-03-23 | 西安交通大学 | Detector device for quickly and accurately positioning radioactive source and positioning method |
| CN110967720A (en) * | 2019-12-24 | 2020-04-07 | 中国人民解放军63919部队 | Human body radiation tissue equivalent material and dose measurement model |
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| US4538071A (en) * | 1981-10-27 | 1985-08-27 | Commissariat A L'energie Atomique | Practical device for the measurement of the absorbed dose versus depth in soft tissues |
| CN2159232Y (en) * | 1992-12-01 | 1994-03-23 | 张宏威 | Assembled sliding solid model body |
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| CN202256691U (en) * | 2011-07-14 | 2012-05-30 | 广州医学院附属肿瘤医院 | Phantom for measuring radiation dose distribution |
| CN202870305U (en) * | 2012-11-12 | 2013-04-10 | 浙江建安检测研究院有限公司 | Dosage measuring model for medical X-ray CT (Computed Tomography) |
| CN203630362U (en) * | 2013-12-10 | 2014-06-04 | 广州医科大学附属肿瘤医院 | Phantom for detecting irradiation dose of high-close rate close-range treatment radioactive source |
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2013
- 2013-12-10 CN CN201310670041.7A patent/CN103698795B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4538071A (en) * | 1981-10-27 | 1985-08-27 | Commissariat A L'energie Atomique | Practical device for the measurement of the absorbed dose versus depth in soft tissues |
| CN2159232Y (en) * | 1992-12-01 | 1994-03-23 | 张宏威 | Assembled sliding solid model body |
| CN1203661A (en) * | 1995-10-12 | 1998-12-30 | 光电子有限公司 | Method and apparatus for measuring radiation dose distribution |
| CN201569746U (en) * | 2009-12-25 | 2010-09-01 | 深圳市海博科技有限公司 | Measuring die body |
| CN101907721A (en) * | 2010-07-19 | 2010-12-08 | 深圳市海博科技有限公司 | Measurement phantom |
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