CN103698795A - Irradiation dose detecting body mold for high-dose-rate short-range treatment radioactive source - Google Patents
Irradiation dose detecting body mold for high-dose-rate short-range treatment radioactive source Download PDFInfo
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- CN103698795A CN103698795A CN201310670041.7A CN201310670041A CN103698795A CN 103698795 A CN103698795 A CN 103698795A CN 201310670041 A CN201310670041 A CN 201310670041A CN 103698795 A CN103698795 A CN 103698795A
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Abstract
The invention discloses an irradiation dose detecting body mold for a high-dose-rate short-range treatment radioactive source. The irradiation dose detecting body mold comprises a bottom plate, an outer mold and an inner mold, wherein the outer mold is arranged on the upper side of the bottom plate and a cylindrical cavity is formed in the outer mold; the inner mold is arranged in the cylindrical cavity and can rotate around the central axis of the cylindrical cavity; a central hole for allowing an external applicator to insert is formed in the central axis of the upper end surface of the inner mold; a plurality of irradiation dose detection circular holes which penetrate through the inner mold are formed around the central hole. When the irradiation dose detecting body mold is used, the applicator serving as the radioactive source is inserted into the central hole of the inner mold, and dose detection device probes are placed into the irradiation dose detection circular holes in a matching way, so that the measurement of the radioactive source at a plurality of points in the body mode is realized; meanwhile, the cylindrical inner mold rotates in the cylindrical inner cavity, so that the dose measurement of a plurality of points in a circumferential line can be realized quickly. According to the irradiation dose detecting body mold, the spatial position relationship between the measurement points and the radioactive source is accurately determined through the design, and meanwhile, the dose distribution characteristics at a plurality of points in space and in a circular curve can be measured.
Description
Technical field
The present invention, for medical instruments field, particularly relates to a kind of close-range treatment radioactive source exposure dose detection bodies mould.
Background technology
The application of radioactive source in medical treatment has the history that surpasses 100 years, for the mankind defeat malignant tumour, brought into play extremely important effect.At present, in the radiation therapy of tumour, miniature iridium-192 of the high dose rate radioactive isotope producing by reactor has obtained application the most widely, this radioactive isotope can be made into the about 1mm of external diameter, the column radioactive source of length 4mm, together with it is tied with flexible steel wire bond, under the stepper motor of controlling at computer drives, match with applicating device, enter in the natural tube chamber or tissue of human body, design proposal according to schedule, in human body, specific position stops the time of appointment, give the radiation exposure dosage that tissue is certain, reach radiocurable object, carry out in body cavity, plesioradiotherapy in pipe or between tissue.
Radiocurable basic demand is that exposure dose is accurate, and the accuracy of plesioradiotherapy dosage depends on the Measurement accuracy to radioactive source.Although, miniature iridium-192 of now widely used high dose rate radioactive source has carried out radioactivity demarcation when dispatching from the factory, and in radiotherapy practice, for reaching the object of radiotherapy quality control, also need it to radiate the measurements such as activity, exposure dose rate and spatial dose distribution thereof.At present, widely used 30cm * 30cm * 30cm, 20cm * 20cm in clinical * 10cm standard water die body, not only be difficult to accurately determine the spatial relation between measurement point and radioactive source, and, the simultaneously a plurality of points in measurement space or the dosage distribution characteristics in a plane.
Summary of the invention
For addressing the above problem, the invention provides and a kind ofly can accurately determine the spatial relation between measurement point and radioactive source, simultaneously a plurality of points in measurement space and the Effect of HDR Brachytherapy radioactive source exposure dose detection bodies mould of the dosage distribution characteristics on a loop curve.
The technical solution adopted for the present invention to solve the technical problems is: a kind of Effect of HDR Brachytherapy radioactive source exposure dose detection bodies mould, comprise base plate, be located at base plate upside and in inside, form the external mold of cylindrical cavity and be located in cylindrical cavity and the internal mold that can rotate around the axis of cylindrical cavity, the upper surface of internal mold is provided with a center pit inserting for outside applicating device at place, axis, around center pit, is provided with some exposure dose test holes that run through internal mold.
Be further used as the improvement of technical solution of the present invention, also comprise thimble ionization chamber erection column and the solid cylindricality plug-in unit that can embed in exposure dose test hole, one end of thimble ionization chamber erection column is provided with the blind hole of inserting for thimble ionization chamber.
Be further used as the improvement of technical solution of the present invention, around center pit, be provided with altogether 5 exposure dose test holes, the axis spacing of 5 exposure dose test holes and internal mold is respectively 10mm, 20mm, 30mm, 40mm and 50mm.
Be further used as the improvement of technical solution of the present invention, base plate, external mold, internal mold, thimble ionization chamber erection column and solid cylindricality plug-in unit are made by solid water material.
Be further used as the improvement of technical solution of the present invention, external mold is provided with angle index line in the outer of cylindrical cavity, and the upper surface of internal mold is provided with the cross curve that Center-to-Center hole overlaps, and 5 exposure dose test holes are all positioned on cross curve.
Be further used as the improvement of technical solution of the present invention, the place, axis at cylindrical cavity on base plate is provided with the central shaft that support internal mould rotates.
Be further used as the improvement of technical solution of the present invention, internal mold comprises split setting and the epimere and the hypomere that by two latches, connect, and the lower surface of epimere and/or the upper surface of hypomere are provided with some for laying the pit of thermoluminescence dosage sheet around center pit.
Be further used as the improvement of technical solution of the present invention, epimere and hypomere that external mold integral body is rectangular-shaped and corresponding internal mold are divided into upper die and lower die, and upper die and lower die are fixedly connected with by the pin of four jiaos.
Beneficial effect of the present invention: in this Effect of HDR Brachytherapy radioactive source exposure dose detection bodies mould, internal mold and external mold are set on base plate, during use, using the center pit of the applicating device insertion internal mold as radioactive source, coordinate the dose measurement device probe of inserting in exposure dose test hole, realize the dosage measurement for radioactive source multiple spot position in body mould; The rotation in external mold cylindrical cavity by cylindrical internal mold simultaneously, can realize a plurality of dosage measurements on circumference fast.When the present invention accurately determines the spatial relation between measurement point and radioactive source by above-mentioned design, can measurement space in dosage distribution characteristics on a plurality of points and a loop curve.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described:
Fig. 1 is embodiment of the present invention one-piece construction schematic diagram;
Fig. 2 is embodiment of the present invention structure vertical view;
Fig. 3 is embodiment of the present invention thimble ionization chamber erection column structural representation.
Embodiment
With reference to Fig. 1～Fig. 3, the invention provides a kind of Effect of HDR Brachytherapy radioactive source exposure dose detection bodies mould, comprise base plate 1, be located at base plate 1 upside and in inside, form the external mold 2 of cylindrical cavity and be located in cylindrical cavity and the internal mold 3 that can rotate around the axis of cylindrical cavity.
Concrete, external mold 2 integral body are rectangular-shaped, and specification is 24cm * 24cm * 15cm, are divided into patrix 21 and counterdie 22, patrix 21 and counterdie 22 profile specifications are 24cm * 24cm * 7.5cm, and the pin 4 by four jiaos between patrix 21 and counterdie 22 is connected and detachable.The aperture of external mold 2 interior cylindrical cavities is 20cm, and internal mold 3 is placed in cylindrical cavity, carries out 360 degree rotate arbitrarily around the rotating shaft 11 of base plate 1 center.Wherein the specification of base plate 1 is 24cm * 24cm * 1cm.
The diameter 20cm of internal mold 3, height 15cm, is divided into epimere 31 and hypomere 32, between epimere 31 and hypomere 32, by two latches 5, is connected.The upper surface of Inner mould 3 is provided with a center pit 33 inserting for outside applicating device at place, axis, around center pit 33, be respectively equipped with 5 exposure dose test holes 34 that run through internal mold 3,5 exposure dose test holes 34 are respectively 10mm, 20mm, 30mm, 40mm and 50mm with the axis spacing of internal mold 3, external mold 2 is provided with angle index line 23 in the outer of cylindrical cavity, every 5 degree are carved a line, 35,5 exposure dose test holes 34 of cross curve that the upper surface of internal mold 3 is provided with 33 coincidences of Center-to-Center hole are all positioned on cross curve 35.Also comprise thimble ionization chamber erection column 6 and the solid cylindricality plug-in unit that can embed in exposure dose test hole 34, one end of thimble ionization chamber erection column 6 is provided with the blind hole 61 of inserting for thimble ionization chamber, wherein thimble ionization chamber erection column 6 fixed installation in exposure dose test hole 34 for thimble ionization chamber, 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, Inner mould 3, thimble ionization chamber erection column 6 and solid cylindricality plug-in unit are made by solid water material.
In addition, the lower surface of the epimere of Inner mould 3 and/or the upper surface of hypomere around center pit 33 in 10cm * 10cm region, according to 10mm * 10mm spacing, be provided with the pit 36 of 100 3mm * 3mm * 1mm, be used for laying thermoluminescence dosage sheet, therefore, available heat is released light dosage sheet and is carried out the plane dosage distribution measuring within the scope of 10cm * 10cm simultaneously.
In this Effect of HDR Brachytherapy radioactive source exposure dose detection bodies mould, internal mold 3 and external mold 2 are set on base plate 1, during use, using the center pit 33 of the applicating device insertion internal mold 3 as radioactive source, coordinate and insert the thimble ionization chamber in exposure dose test hole 34, dose signal is conducted to outside dosemeter, realize the dosage measurement for radioactive source multiple spot position in body mould; The rotation in external mold 2 cylindrical cavities by cylindrical internal mold 3 simultaneously, can realize a plurality of dosage measurements on circumference fast.When the present invention accurately determines the spatial relation between measurement point and radioactive source by above-mentioned design, can measurement space in dosage distribution characteristics in a plurality of points, a loop curve or a plane.
Certainly, the invention is not limited to above-mentioned embodiment, those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite without prejudice to spirit of the present invention, and the modification that these are equal to or replacement are all included in the application's claim limited range.
Claims (8)
1. an Effect of HDR Brachytherapy radioactive source exposure dose detection bodies mould, it is characterized in that: comprise base plate, be located at described base plate upside and in inside, form the external mold of cylindrical cavity and be located in cylindrical cavity and the internal mold that can rotate around the axis of described cylindrical cavity, the upper surface of described internal mold is provided with a center pit inserting for outside applicating device at place, axis, around described center pit, is provided with some exposure dose test holes that run through internal mold.
2. Effect of HDR Brachytherapy radioactive source exposure dose detection bodies mould according to claim 1, it is characterized in that: also comprise thimble ionization chamber erection column and the solid cylindricality plug-in unit that can embed in described exposure dose test hole, one end of described thimble ionization chamber erection column is provided with the blind hole of inserting for thimble ionization chamber.
3. Effect of HDR Brachytherapy radioactive source exposure dose detection bodies mould according to claim 2, it is characterized in that: around described center pit, be provided with altogether 5 exposure dose test holes, the axis spacing of 5 described exposure dose test holes and Inner mould is respectively 10mm, 20mm, 30mm, 40mm and 50mm.
4. Effect of HDR Brachytherapy radioactive source exposure dose detection bodies mould according to claim 2, is characterized in that: described base plate, external mold, internal mold, thimble ionization chamber erection column and solid cylindricality plug-in unit are made by solid water material.
5. Effect of HDR Brachytherapy radioactive source exposure dose detection bodies mould according to claim 3, it is characterized in that: described external mold is provided with angle index line in the outer of cylindrical cavity, the upper surface of described internal mold is provided with the cross curve that center overlaps with described center pit, and 5 described exposure dose test holes are all positioned on described cross curve.
6. according to the Effect of HDR Brachytherapy radioactive source exposure dose detection bodies mould described in claim 1～5, it is characterized in that: on described base plate, at the place, axis of cylindrical cavity, be provided with and support the central shaft that described internal mold rotates.
7. according to the Effect of HDR Brachytherapy radioactive source exposure dose detection bodies mould described in claim 1～5, it is characterized in that: described internal mold comprises split setting and the epimere and the hypomere that by two latches, connect, and the lower surface of described epimere and/or the upper surface of hypomere are provided with some for laying the pit of thermoluminescence dosage sheet around described center pit.
8. Effect of HDR Brachytherapy radioactive source exposure dose detection bodies mould according to claim 7, it is characterized in that: epimere and hypomere that described external mold integral body is rectangular-shaped and corresponding internal mold are divided into upper die and lower die, and described upper die and lower die are fixedly connected with by the pin of four jiaos.
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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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| CN103698795A true CN103698795A (en) | 2014-04-02 |
| CN103698795B CN103698795B (en) | 2016-08-31 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104189993A (en) * | 2014-08-14 | 2014-12-10 | 广州医科大学附属肿瘤医院 | Radiotherapy plan designing simulation and three-dimensional dose distribution testing device |
| CN105807306A (en) * | 2016-04-25 | 2016-07-27 | 张宏涛 | Radioactive particle radiation dose measurement device and measurement method thereof |
| 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 |
| CN110794443A (en) * | 2019-10-23 | 2020-02-14 | 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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| 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 |
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| 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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Patent Citations (8)
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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 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104189993A (en) * | 2014-08-14 | 2014-12-10 | 广州医科大学附属肿瘤医院 | Radiotherapy plan designing simulation and three-dimensional dose distribution testing device |
| CN105807306A (en) * | 2016-04-25 | 2016-07-27 | 张宏涛 | Radioactive particle radiation dose measurement device and measurement method thereof |
| 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 |
| CN110794443A (en) * | 2019-10-23 | 2020-02-14 | 西安交通大学 | Detector device for quickly and accurately positioning radioactive source and positioning method |
| 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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| CN103698795B (en) | 2016-08-31 |
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