CN104958838A - Protective device for reducing whole-body radiation dose - Google Patents
Protective device for reducing whole-body radiation dose Download PDFInfo
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- CN104958838A CN104958838A CN201510282876.4A CN201510282876A CN104958838A CN 104958838 A CN104958838 A CN 104958838A CN 201510282876 A CN201510282876 A CN 201510282876A CN 104958838 A CN104958838 A CN 104958838A
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- protective cover
- base plate
- protective
- retaining wall
- radiation dose
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Abstract
The invention discloses a protective device for reducing the whole-body radiation dose. The protective device comprises a base plate and a protective cover, lower protective walls are arranged at the edges of the left side and the right side of the base plate, and upper protective walls are arranged at the edges of the left side and the right side of the protective cover; the base plate is connected with the protective cover in a matched mode through the upper protective walls and the lower protective walls, and a protective space is formed between the base plate and the protective cover; and the base plate and the protective cover each comprise a lead substrate, a protective film arranged on the lead substrate and located on the surface of the inner side of the protective space and a tissue equivalent material layer arranged on the lead substrate and located on the surface of the outer side of the protective space. According to the protective device, protection on low-energy X rays can be completed through the lead substrates, and meanwhile the protection films are arranged on the inner sides of the lead substrates so as to be used for preventing the human body or other equipment from being in direct contact with the high-purity lead substrates; and as for protection on thermal neutrons, the tissue equivalent material layers are arranged on the outer sides of the lead substrates. As mentioned above, the protective space for protecting the human body can be formed through the base plate and the protective cover, and the ideal protective effect can be achieved.
Description
Technical field
The present invention is used for medical protection device technique field, particularly relates to a kind of preventer reducing whole-body radiation dose.
Background technology
At present, in recent ten years, the accurate radiotherapy technology of the sigmatron adopting medical accelerator to produce, plays a part more and more important in the treatment of most of malignant tumor.Particularly last century Mo occur as three-dimensional conformal intensity modulated radiation therapy (IMRT) technology; the milestone that radiotherapy develops can be thought; this technology substantially increases the conformal degree of target dose, the normal structure of the contiguous target area that can adequately protect and organ; be obtained in the radiotherapy of each region tumors of whole body and apply widely; treatment particularly in nasopharyngeal carcinoma, carcinoma of prostate etc.; achieve unprecedented good effect, significantly improve the survival rate of patient, improve life quality after treating.As after early stage intensity modulated radiation therapy in nasopharyngeal carcinoma, 5 years survival rates can reach more than 90%, 5 years survival rates of middle and advanced stage NPC also can reach 70-80%, and the sequela of radiotherapy, as xerostomia, difficulty in opening mouth etc. are obtained for remarkable reduction, therefore IMRT becomes the first-selected therapy of nasopharyngeal carcinoma.
But along with extensively popularizing of IMRT technology, along with the raising of tumor patient survival rate and the improvement of life quality, some disadvantages of IMRT also start to manifest, and as low dose radiation brings out the problem of cancer, are subject to the extensive concern of radiotherapy circle.Its main cause has two aspects: (1). be subject to target area normal surrounding tissue volume compared with low dose exposure during IMRT radiotherapy much larger than conventional radiotheraphy; (2). because IMRT adopts radiation modality or the rotary irradiation mode of a large amount of little Ziye usually, its total irradiation time is about the 2-3 of conventional radiotheraphy doubly, even longer.Therefore, in IMRT process, the normal structure outside irradiation field, organ are then inevitably subject to the irradiation that head leaks X-ray, induct lonizing radiation, stray radiation etc.; When adopting the sigmatron of more than 6MV, as 8MV, 10MV, 15MV etc., patient also may be subject to the irradiation of the thermal neutron that photonuclear reaction produces, thermal neutron to the harm of health more higher than X-ray; Therefore, during IMRT, whole body is non-connects subject region, may be subject to compared with the many 1-2 of conventional radiotheraphy additional radiation doubly.Large quantity research is had to show both at home and abroad, this additional radiation dosage about 10mSv at least, 2000-3000mSv can be reached at most, far above the radiation protection standard dose limitation (5 annual effective doses are no more than 1mSv) that country sets the public, because this extra total body radiation exists the possibility of bringing out malignant tumor, therefore, how to reduce IMRT irradiation time, reduce irradiated volume, reduce the concern that whole-body radiation dose is subject to more multi-expert.
On the other hand, now there are some researches show, when the high-energy ray adopting medical accelerator to produce carries out radiotherapy, although the power spectrum of the stray radiation outside irradiation field is continuous spectrum, but the share accounted for lower than ray and the thermal neutron of 500kV is maximum, therefore, the additional radiation that Organ and tissue during IMRT outside irradiation field is subject to take energy as the low energy X ray of below 500kV and thermal neutron (adopting the sigmatron of more than 6MV to carry out IMRT, as 8MV, 10MV, 15MV etc. have thermal neutron to produce) is main.Main principle for the protection of radiation is " time, distance, shielding ", namely reduces radiated time, tries one's best away from radiation source, adopts effective shielding measure, can reach the object reducing radiation dose.
Summary of the invention
For solving the problem, the invention provides a kind of preventer reducing whole-body radiation dose, to reduce in radiotherapy or CT scan process the non-extra irradiation dose by inspection, non-treated area of human body.
The technical solution adopted for the present invention to solve the technical problems is: a kind of preventer reducing whole-body radiation dose, comprise base plate and protective cover, the edge, the left and right sides of described base plate is provided with lower retaining wall, the edge, the left and right sides of described protective cover is provided with retaining wall, described base plate is connected with lower retaining wall coupling by upper retaining wall with protective cover, and protective zone is formed between base plate and protective cover, described base plate and protective cover include lead substrate, be located at described lead substrate to be positioned at the protecting film on protective zone inner surface and to be located at described lead substrate and be positioned at tissueequivalentmaterial layer on protective zone outer surface.
Be further used as the improvement of technical solution of the present invention, described base plate and/or protective cover are provided with the adjustment retaining mechanism connecting upper retaining wall and lower retaining wall.
Be further used as the improvement of technical solution of the present invention, described adjustment retaining mechanism comprises the compensating roller locking nail be located under the described base plate left and right sides on retaining wall, on the described protective cover left and right sides, retaining wall is provided with compensating roller locking socket, and described protective cover can slide up and down along the described compensating roller locking nail on base plate and lock.
Be further used as the improvement of technical solution of the present invention, described tissueequivalentmaterial layer is solid water layer or rubber layer or perspex layer or plastic layer.
Be further used as the improvement of technical solution of the present invention, described protecting film is rubber or polyethylene or paint.
Be further used as the improvement of technical solution of the present invention, described protective cover cross section is in the arc swelled outside protective zone, described protective cover both sides inside and outside upper retaining wall are equipped with nonmetal edge strip, described protective cover are equipped with on the nonmetal edge strip of inner side the curved support frame supporting described protective cover.
Be further used as the improvement of technical solution of the present invention, also comprising can the elasticity water-stop capsule in space between shutoff base plate and/or human body, described elasticity water-stop capsule comprises elasticity pouch and water pump, described elasticity pouch is by described water pump water-filling or discharge water, in rectangular capsule shape after described elasticity pouch water-filling.
Be further used as the improvement of technical solution of the present invention, the thickness of described lead substrate is 1-2mm, and the thickness of described tissueequivalentmaterial layer is 5-10mm.
Beneficial effect of the present invention: in the present invention, the agent structure of base plate and protective cover all adopts lead substrate, lead substrate can complete the protection to low energy X ray, arranging protecting film simultaneously, directly contacting high-purity lead substrate for preventing human body or other equipment in the inner side of lead substrate; And the protection to thermal neutron, the present invention is at the arranged outside tissueequivalentmaterial layer of lead substrate, tissueequivalentmaterial layer for reducing the scattering again of indoor original stray radiation and high purity lead substrate, the stray radiation that a simultaneously stability part is indoor and the neutron of inducting that sigmatron (as 8MV, 10MV, 15MV etc.) produces.As mentioned above, the present invention can form the protective zone of protection human body by base plate and protective cover, and can reach desirable protection effect.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described:
Fig. 1 is base arrangement axonometric drawing of the present invention;
Fig. 2 is base plate end view drawing of the present invention;
Fig. 3 is protective roof structure axonometric drawing of the present invention;
Fig. 4 is protective cover end view drawing of the present invention.
Detailed description of the invention
Referring to figs. 1 through Fig. 4, that show the concrete structure of the preferred embodiment of the present invention.To the construction features of the present invention each element be described in detail below, and if be described to direction (upper and lower, left and right, before and after) time, be with the structure shown in Fig. 1 for reference to describing, but actual user of the present invention is to being not limited thereto.
The invention provides a kind of preventer reducing whole-body radiation dose, comprise base plate 1 and protective cover 2, the edge, the left and right sides of described base plate 1 is provided with lower retaining wall 11, the edge, the left and right sides of described protective cover 2 is provided with retaining wall 21, described base plate 1 is connected with lower retaining wall 11 coupling by upper retaining wall 21 with protective cover 2, and protective zone is formed between base plate 1 and protective cover 2, described base plate 1 and protective cover 2 include lead substrate 3, be located at described lead substrate 3 to be positioned at the protecting film 4 on protective zone inner surface and to be located at described lead substrate 3 and be positioned at tissueequivalentmaterial layer 5 on protective zone outer surface.Described protecting film 4 is rubber or polyethylene or paint.Described tissueequivalentmaterial layer 5 is solid water layer or rubber layer or perspex layer or plastic layer.
In the present invention, the agent structure of base plate 1 and protective cover 2 all adopts lead substrate 3, and lead substrate 3 can complete the protection to low energy X ray, arranging protecting film 4 simultaneously, directly contacting high-purity lead substrate 3 for preventing human body or other equipment in the inner side of lead substrate 3; And the protection to thermal neutron, the present invention is at the arranged outside tissueequivalentmaterial layer 5 of lead substrate 3, tissueequivalentmaterial layer 5 for reducing the scattering again of indoor original stray radiation and high purity lead substrate 3, the stray radiation that a simultaneously stability part is indoor and the neutron of inducting that sigmatron (as 8MV, 10MV, 15MV etc.) produces.As mentioned above, the present invention can form the protective zone of protection human body by base plate 1 and protective cover 2, and can reach desirable protection effect.
Described base plate 1 and/or protective cover 2 are provided with the adjustment retaining mechanism connecting upper retaining wall 21 and lower retaining wall 11.Described adjustment retaining mechanism comprises the compensating roller locking nail 6 be located under described base plate 1 left and right sides on retaining wall 11, on described protective cover 2 left and right sides, retaining wall 21 is provided with compensating roller locking socket 22, described protective cover 2 can slide up and down along the described compensating roller locking nail 6 on base plate 1 and lock, thus the height of adjustable protection 2, make it close with the body surface (or body position fixing device) of patient as far as possible, reduce the space between protective cover 2 and body surface (or body position fixing device) as far as possible, to reduce the stray radiation entered from protective cover 2 transverse section, simultaneously, by compensating roller locking nail 6, protective cover 2 and base plate 1 are tightly linked.
Described protective cover 2 cross section is in the arc swelled outside protective zone, and described protective cover 2 both sides inside and outside upper retaining wall 21 are equipped with nonmetal edge strip 7, described protective cover 2 are equipped with on the nonmetal edge strip 7 of inner side the curved support frame 8 supporting described protective cover 2.The base of nonmetal edge strip 7 one aspect clamping protective cover, on the other hand, on the nonmetal edge strip 7 of internal layer, appropriate location is provided with the curved support frame 8 that rigid non-metallic material makes, for supporting protection cover 2 high purity lead substrate 3 and on tissueequivalentmaterial weight (because high purity lead matter is soft, can not support self and on the weight of tissueequivalentmaterial), the profile of protective cover 2 can be kept.
Also comprising can the elasticity water-stop capsule in space between shutoff base plate and/or human body, described elasticity water-stop capsule comprises elasticity pouch and water pump, elasticity pouch is made into by the material (as the material such as sealed polyethylene plastic, medical grade rubber) of similar soft tissue can fill water, whippy, sealable strip capsule, described elasticity pouch is by described water pump water-filling or discharge water, in rectangular capsule shape after described elasticity pouch water-filling.After this elastomeric bladder packed water, be placed in inside protective cover 2 port, for the space between shutoff protective cover 2 port and body position fixing device (human body), reduce the stray radiation entered from protective cover 2 transverse section.
In order to the problem of compromise protective material weight and protection effect, for commonly using sigmatron at present, if energy is 6MV, 8MV, 10MV, 15MV sigmatron, in preventer of the present invention, the thickness of lead substrate 3 is advisable with 1-2mm, the thickness of equivalence organization material layer 5 is advisable (the additional radiation dosage that can reduce 50-80%) certainly with 5-10mm, also with irradiation energy and patient requests, suitably thickness can be changed, to reach optimal protection effect.
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 these equivalent modification or replacement are all included in the application's claim limited range.
Claims (8)
1. one kind is reduced the preventer of whole-body radiation dose; it is characterized in that: comprise base plate and protective cover; the edge, the left and right sides of described base plate is provided with lower retaining wall; the edge, the left and right sides of described protective cover is provided with retaining wall; described base plate is connected with lower retaining wall coupling by upper retaining wall with protective cover; and protective zone is formed between base plate and protective cover, described base plate and protective cover include lead substrate, be located at described lead substrate is positioned at the protecting film on protective zone inner surface and is located at described lead substrate and be positioned at tissueequivalentmaterial layer on protective zone outer surface.
2. the preventer of reduction whole-body radiation dose according to claim 1, is characterized in that: described base plate and/or protective cover are provided with the adjustment retaining mechanism connecting upper retaining wall and lower retaining wall.
3. the preventer of reduction whole-body radiation dose according to claim 2, it is characterized in that: described adjustment retaining mechanism comprises the compensating roller locking nail be located under the described base plate left and right sides on retaining wall, on the described protective cover left and right sides, retaining wall is provided with compensating roller locking socket, and described protective cover can slide up and down along the described compensating roller locking nail on base plate and lock.
4. the preventer of the reduction whole-body radiation dose according to claim 1,2 or 3, is characterized in that: described tissueequivalentmaterial layer is solid water layer or rubber layer or perspex layer or plastic layer.
5. the preventer of the reduction whole-body radiation dose according to claim 1,2 or 3, is characterized in that: described protecting film is rubber or polyethylene or paint.
6. the preventer of the reduction whole-body radiation dose according to claim 1,2 or 3, it is characterized in that: described protective cover cross section is in the arc swelled outside protective zone, described protective cover both sides inside and outside upper retaining wall are equipped with nonmetal edge strip, described protective cover are equipped with on the nonmetal edge strip of inner side the curved support frame supporting described protective cover.
7. the preventer of the reduction whole-body radiation dose according to claim 1,2 or 3, it is characterized in that: also comprising can the elasticity water-stop capsule in space between shutoff base plate and/or human body, described elasticity water-stop capsule comprises elasticity pouch and water pump, described elasticity pouch is by described water pump water-filling or discharge water, in rectangular capsule shape after described elasticity pouch water-filling.
8. the preventer of the reduction whole-body radiation dose according to claim 1,2 or 3, is characterized in that: the thickness of described lead substrate is 1-2mm, and the thickness of described tissueequivalentmaterial layer is 5-10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510282876.4A CN104958838B (en) | 2015-05-28 | 2015-05-28 | A kind of protective device for reducing whole-body radiation dose |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510282876.4A CN104958838B (en) | 2015-05-28 | 2015-05-28 | A kind of protective device for reducing whole-body radiation dose |
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| CN104958838A true CN104958838A (en) | 2015-10-07 |
| CN104958838B CN104958838B (en) | 2018-06-05 |
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| CN201510282876.4A Active CN104958838B (en) | 2015-05-28 | 2015-05-28 | A kind of protective device for reducing whole-body radiation dose |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108888876A (en) * | 2018-06-28 | 2018-11-27 | 广州医科大学附属肿瘤医院 | Radiotherapy external stray radiation protective device and production method based on 3D printing |
| CN109077750A (en) * | 2018-07-05 | 2018-12-25 | 安徽医科大学第附属医院 | A kind of urological surgery protective device |
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| JP2007185423A (en) * | 2006-01-16 | 2007-07-26 | Mitsubishi Electric Corp | Particle beam irradiation apparatus and particle therapy system |
| CN201135450Y (en) * | 2007-11-29 | 2008-10-22 | 杭州市萧山区中医院 | CT scanning protection shield |
| CN101516432A (en) * | 2006-07-28 | 2009-08-26 | 得克萨斯大学体系董事会 | Adaptive intracavitary brachytherapy applicator |
| CN101528304A (en) * | 2005-02-15 | 2009-09-09 | 先进放射治疗有限公司 | Peripheral brachytherapy of protruding conformable organs |
| CN204745398U (en) * | 2015-05-28 | 2015-11-11 | 广州医科大学附属肿瘤医院 | Protection device for reduce full -length radiation does |
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2015
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Patent Citations (5)
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|---|---|---|---|---|
| CN101528304A (en) * | 2005-02-15 | 2009-09-09 | 先进放射治疗有限公司 | Peripheral brachytherapy of protruding conformable organs |
| JP2007185423A (en) * | 2006-01-16 | 2007-07-26 | Mitsubishi Electric Corp | Particle beam irradiation apparatus and particle therapy system |
| CN101516432A (en) * | 2006-07-28 | 2009-08-26 | 得克萨斯大学体系董事会 | Adaptive intracavitary brachytherapy applicator |
| CN201135450Y (en) * | 2007-11-29 | 2008-10-22 | 杭州市萧山区中医院 | CT scanning protection shield |
| CN204745398U (en) * | 2015-05-28 | 2015-11-11 | 广州医科大学附属肿瘤医院 | Protection device for reduce full -length radiation does |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108888876A (en) * | 2018-06-28 | 2018-11-27 | 广州医科大学附属肿瘤医院 | Radiotherapy external stray radiation protective device and production method based on 3D printing |
| CN108888876B (en) * | 2018-06-28 | 2021-06-29 | 广州医科大学附属肿瘤医院 | Radiotherapy radiation field stray radiation protection device based on 3D printing and manufacturing method |
| CN109077750A (en) * | 2018-07-05 | 2018-12-25 | 安徽医科大学第附属医院 | A kind of urological surgery protective device |
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| CN104958838B (en) | 2018-06-05 |
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