CN102004261A - Dosage comparison radiating bracket for thermoluminescence dosemeter - Google Patents
Dosage comparison radiating bracket for thermoluminescence dosemeter Download PDFInfo
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- CN102004261A CN102004261A CN2009101643356A CN200910164335A CN102004261A CN 102004261 A CN102004261 A CN 102004261A CN 2009101643356 A CN2009101643356 A CN 2009101643356A CN 200910164335 A CN200910164335 A CN 200910164335A CN 102004261 A CN102004261 A CN 102004261A
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- sliding support
- dosage
- dosemeter
- cover rail
- rail ring
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Abstract
The invention provides a dosage comparison radiating bracket for a thermoluminescent dosemeter in the field of radiotherapy radiation dosage quality control and quality assurance auxiliary equipment, comprising a base and a sliding support. The dosage comparison radiating bracket is characterized in that a horizontal adjusting bolt, a horizontal coordinate scale and a bracket bar are arranged on the disc-shaped base; the sliding support consists of a gauntlet track ring and an element support rod, wherein the element support rod is of a cross shape, one end of an arm in the cross shape is connected with the gauntlet track ring, while a dosemeter position hole is reserved on the other end; the dosemeter position hole is reserved on the other arm in the cross shape; and the sliding support is connected with the bracket rod through the gauntlet track ring, and is fixed by a positioning bolt. By using the dosage comparison radiating bracket for the thermoluminescent dosemeter, the defects of inconvenient mounting, positioning and using of the conventional bracket are overcome; and the radiating bracket has high integration degree and wide application, and is convenient for mounting, adjusting and using.
Description
Affiliated technical field: the present invention relates to quality control of radiation therapy radiation dose and quality assurance utility appliance field, more specifically is thermoluminescent dosemeter dosage comparison irradiation support.
Background technology: radiocurable success or not is decided by the accuracy of target dose to a great extent.Because target dose uncertainty 5% just may cause the change of radiation therapy biological effect.1), the measuring error of therapy apparatus output quantity in therapeutic process, the error of radiotherapy dosage is mainly from following link:; 2), the output quantity under the reference conditions converts the dose error under the non-reference conditions to; Prescribed dose is converted to the error of treatment target dose during 3), from radiation therapy design (TPS); 4), patient's pendulum, positioning error etc.Wherein 1), 2) be stochastic error, 3), 4) be nonrandom (system) error.Wherein the dosage that converts under the non-reference conditions of the measurement of therapy apparatus output quantity and the output quantity under the reference conditions is particularly important in the radiocurable quality control (QC) at each radiation therapy hospital or center and quality assurance (QA); related organizations such as International Atomic Energy Agency (IAEA) and The World Health Organization (WHO) have specialized agency to be responsible for organizing frequent irregular dosage comparison, grasp the implementation status and the safety of guaranteeing patient's radioactive dose of global various countries QA of radiotherapy mechanism and QC.The method that dosage comparison between present this each department and constituent parts is adopted mainly is thermoluminescent dosemeter (TLD) mensuration.Thermoluminescent dosemeter has following posologic advantage: wide dose application scope is arranged, from 10
-7～10
5The Gy linear response; The favorable tissue equivalence is arranged; Can make the element of various sizes and shape, mailing is convenient, in use is not subjected to the restriction of locus; Can be 0～10
9Measure long-term integral dose, no dependence in the Gy/s dose rate scope; Measuring accuracy is better than 3%; The thermoluminescence material is insensitive to environmental factor (temperature, humidity, air pressure); Thermoluminescent dosemeter is read convenience, rapid, calculates simply, can realize large-scale measurement, and the result is provided at any time.In order to ensure the consistance of comparison condition with reduce the measuring system error as far as possible, IAEA and WHO participate in the various supports that mechanism provides placement TLD to each.Yet this support is formed by multiple member assembly group, and it is convenient not to the utmost to install, locate, use, and often causes the comparison result failure when basic unit's radiotherapy center uses owing to operation is careless slightly.
Summary of the invention: the objective of the invention is to install, locate, use inconvenient defective in order to overcome existing support, provide a kind of when being specifically applied to radiotherapy under reference conditions and the non-reference conditions, the integrated level height, install and regulate thermoluminescent dosemeter dosage comparison irradiation support easy to use, widely applicable.
The objective of the invention is to realize by following technical proposals:
Thermoluminescent dosemeter dosage comparison irradiation support of the present invention is made up of base and sliding support, it is characterized in that being equipped with on the disc-shaped base horizontal adjustment screw, horizontal base scale and cradling piece; Sliding support is made up of cover rail ring and member supports bar, and wherein, the member supports bar is a cruciform, and an end of cruciform one arm is connected with cover rail ring, and the other end has the quantimeter location hole, and criss-cross another arm has the quantimeter location hole; Sliding support is connected with cradling piece by cover rail ring, and is fixed by dog screw.
In the such scheme, described sliding support is made up of cover rail ring and electronics line bracket, and wherein, the electronics line bracket is configured to by pole and dish type, and an end of pole is connected with cover rail ring, and the other end is connected with the dish type frame, and there is the quantimeter location hole side of dish type frame; Sliding support is connected with cradling piece by cover rail ring, and is fixed by dog screw.
In the such scheme, described disc-shaped base is circular discs, square plate, triangle dish, polygon dish, waveform dish or petal dish.
In the such scheme, have the digital calibration sign on the described cradling piece.
In the such scheme, described member supports bar is T, Γ, Y or Ψ shape, and its bottom is connected with cover rail ring, and the quantimeter location hole is arranged on all the other arms.
The use of thermoluminescent dosemeter of the present invention (TLD) dosage comparison irradiation support is:
Base is put into 30cm * 30cm * 30cm canonical measure water tank or 30cm * 30cm * 20cm measures water tank, connection and fixed in position have the sliding support of TLD, regulate the horizontal adjustment screw and make support maintenance level, careful toward water tank injection clean water, according to different testing goals, having the mobile cover rail ring of adjusting on the cradling piece of scale, after TLD element on the sliding support is met the requirements apart from the height of the water surface, just can under different reference conditions or non-reference conditions, carry out the beam irradiation, after irradiation finishes, take off the TLD element and measure, can obtain the comparison data.
The present invention has following characteristics:
(1) integrated level height, installation is regulated easy to use.
TLD dosage of the present invention comparison irradiation support only is made up of base and sliding support two big parts, comprises electronics line bracket 3 annexes (IAEA/WHO recommendation be 8) altogether, only uses two during generalized case.Have three horizontal adjustment screws, the horizontality of conveniently adjusted member supports bar on the base.Base and sliding support adopt sliding sleeve to be connected, and the digital calibration sign is arranged on the cradling piece, the height of the regulating element and the water surface very easily, the demand of adaptation different measuring.
(2) function is many.
TLD dosage comparison irradiation support functions of use of the present invention is more, can measure almost all dosage comparison parameter, as: given under the reference conditions with reference to irradiation field, specify the dosimeter parameter of the reference point degree of depth under water; Under the non-reference conditions, photon beam and electron beam axis be to the maximum dose point, the clinical dosage mathematic(al) parameter that dosage changes from, clapboard angle etc. with irradiation field, the degree of depth, from wheelbase.Also can be used for the conventional QA/AC dose monitoring use of machine day.
(3) widely applicable.
Measure but also be adapted at measuring under the non-reference conditions under the not only suitable reference conditions of TLD dosage comparison irradiation support of the present invention.Under the reference conditions, photon beam (cobalt-60 gamma rays and various high, normal, basic X line), specifying the reference point degree of depth (as: maximum dose point under water, 5cm, 10cm is 20cm), given with reference to irradiation field (as: 5cm * 5cm, 10cm * 10cm, the dosimeter parameter at reference point place under the condition of 20cm * 20cm).Under the non-reference conditions, photon beam and electron beam axis be to the maximum dose point, the clinical dosage mathematic(al) parameter that dosage changes from, clapboard angle etc. with irradiation field, the degree of depth, from wheelbase.
(4) be convenient to promote the use of in grass-roots unit.
TLD dosage comparison irradiation support of the present invention is owing to have These characteristics, being highly suitable for radiation therapy unit of Chinese vast basic unit applies, particularly adopt the TLD method to go dosage monitoring and guidance, can play positive quality assurance effect improving local radiation therapy level to several or the radiotherapy QA/QC of dozens of subordinate unit at the radiotherapy Quality Control center of center provinces and cities.
Therefore, TLD dosage comparison of the present invention is shone support and has been overcome existing support installation, location, used inconvenient defective, the integrated level height, and the installation adjusting is easy to use, widely applicable.
Description of drawings:
Fig. 1 is the structural representation of base of the present invention.
Fig. 2 is the sliding support structural representation of the embodiment of the invention one.
Fig. 3 is the sliding support structural representation of the embodiment of the invention two.
Fig. 4 is the assembling synoptic diagram of the embodiment of the invention one.
Fig. 5 is the assembling synoptic diagram of the embodiment of the invention two.
Embodiment:
Be described in further detail the present invention below in conjunction with drawings and Examples, but the present invention is not limited only to described embodiment.
In the accompanying drawing, each digital implication is: 1: base; 2: the horizontal adjustment screw; 3: the horizontal base scale; 4: cradling piece; 5: cover rail ring; 6: dog screw; 7: the quantimeter location hole; 8: the quantimeter location hole; 9: the electronics line bracket; 10: the quantimeter location hole; 11: the member supports bar.
Embodiment one
This routine thermoluminescent dosemeter dosage comparison irradiation support is made up of base 1 and sliding support shown in figure one, figure two and figure four, it is characterized in that being equipped with on the circular discs base 1 horizontal adjustment screw 2, horizontal base scale 3 and cradling piece 4; Sliding support is made up of cover rail ring 5 and member supports bar 11, and wherein, member supports bar 11 is a cruciform, and an end of cruciform one arm is connected with cover rail ring 5, and the other end has quantimeter location hole 7, and criss-cross another arm has quantimeter location hole 8; Sliding support is connected with cradling piece 4 by cover rail ring 5, and fixing by dog screw 6.
Embodiment two
This routine thermoluminescent dosemeter dosage comparison irradiation support is made up of base 1 and sliding support shown in figure five, and base 1 is with embodiment one.Sliding support is made up of cover rail ring 5 and electronics line bracket 9 shown in figure three, and wherein, electronics line bracket 9 is configured to by pole and dish type, and an end of pole is connected with cover rail ring 5, and the other end is connected with the dish type frame, and there is quantimeter location hole 10 side of dish type frame; Sliding support is connected with cradling piece 4 by cover rail ring 5, and fixing by dog screw 6.
Embodiment three
This routine thermoluminescent dosemeter dosage comparison irradiation support is made up of base 1 and sliding support, and base 1 is the waveform dish, has the digital calibration sign on the cradling piece 4, and other is with embodiment one.Sliding support is with embodiment two.
Embodiment four
This routine thermoluminescent dosemeter dosage comparison irradiation support is made up of base 1 and two sliding supports, and base 1 is the equilateral triangle dish, has the digital calibration sign on the cradling piece 4, and other is with embodiment one.A sliding support is with embodiment one, and another sliding support is with embodiment two.
Embodiment five
It is the square dish that this routine thermoluminescent dosemeter dosage comparison irradiation support removes base 1, has the digital calibration sign on the cradling piece, and the member supports bar is a T shape, and its bottom is connected with cover rail ring, has on the transverse arm outside the quantimeter location hole, and all the other are with embodiment one.
Embodiment six
It is Γ shape that this routine thermoluminescent dosemeter dosage comparison irradiation support removes the member supports bar, and its bottom is connected with cover rail ring, has on the transverse arm outside the quantimeter location hole, and all the other are with embodiment five.
Embodiment seven
It is Y shape that this routine thermoluminescent dosemeter dosage comparison irradiation support removes the member supports bar, and its bottom is connected with cover rail ring, has outside the quantimeter location hole on other two arms, and all the other are with embodiment five.
Embodiment eight
It is Ψ shape that this routine thermoluminescent dosemeter dosage comparison irradiation support removes the member supports bar, and its bottom is connected with cover rail ring, has outside the quantimeter location hole on other three arms, and all the other are with embodiment five.
Claims (5)
1. a thermoluminescent dosemeter dosage comparison irradiation support is made up of base (1) and sliding support, it is characterized in that being equipped with on the disc-shaped base (1) horizontal adjustment screw (2), horizontal base scale (3) and cradling piece (4); Sliding support is made up of cover rail ring (5) and member supports bar (11), wherein, member supports bar (11) is a cruciform, and an end of cruciform one arm is connected with cover rail ring (5), the other end has quantimeter location hole (7), and criss-cross another arm has quantimeter location hole (8); Sliding support is connected with cradling piece (4) by cover rail ring (5), and fixing by dog screw (6).
2. thermoluminescent dosemeter dosage comparison irradiation support according to claim 1, it is characterized in that described sliding support is made up of cover rail ring (5) and electronics line bracket (9), wherein, electronics line bracket (9) is configured to by pole and dish type, one end of pole is connected with cover rail ring (5), the other end is connected with the dish type frame, and there is quantimeter location hole (10) side of dish type frame; Sliding support is connected with cradling piece (4) by cover rail ring (5), and fixing by dog screw (6).
3. thermoluminescent dosemeter dosage comparison irradiation support according to claim 1 is characterized in that described disc-shaped base (1) is circular discs, square plate, triangle dish, polygon dish, waveform dish or petal dish.
4. thermoluminescent dosemeter dosage comparison irradiation support according to claim 1 is characterized in that having on the described cradling piece (4) the digital calibration sign.
5. thermoluminescent dosemeter dosage comparison irradiation support according to claim 1 is characterized in that described member supports bar (11) is T, Γ, Y or Ψ shape, and its bottom is connected with cover rail ring (5), and the quantimeter location hole is arranged on all the other arms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101643356A CN102004261B (en) | 2009-09-03 | 2009-09-03 | Dosage comparison radiating bracket for thermoluminescence dosemeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101643356A CN102004261B (en) | 2009-09-03 | 2009-09-03 | Dosage comparison radiating bracket for thermoluminescence dosemeter |
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| Publication Number | Publication Date |
|---|---|
| CN102004261A true CN102004261A (en) | 2011-04-06 |
| CN102004261B CN102004261B (en) | 2012-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101643356A Expired - Fee Related CN102004261B (en) | 2009-09-03 | 2009-09-03 | Dosage comparison radiating bracket for thermoluminescence dosemeter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068105A (en) * | 2015-08-18 | 2015-11-18 | 浙江建安检测研究院有限公司 | Leakage radiation testing method for accelerator head |
| CN114594510A (en) * | 2022-02-25 | 2022-06-07 | 西北核技术研究所 | Combined type adjustable charged particle balancing body of thermoluminescent dosimeter and installation method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5081362A (en) * | 1989-05-30 | 1992-01-14 | Vargo George J | Directional radiation probe |
| CN2196312Y (en) * | 1994-05-05 | 1995-05-03 | 张宏威 | Combination type multifunction water mould |
| CN1963476A (en) * | 2005-11-09 | 2007-05-16 | 清华同方威视技术股份有限公司 | A centre alignment apparatus for ray bundle |
| CN201609551U (en) * | 2009-09-03 | 2010-10-20 | 四川省肿瘤医院 | Dose comparing and irradiating support of thermo-luminescent dosimeter |
-
2009
- 2009-09-03 CN CN2009101643356A patent/CN102004261B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068105A (en) * | 2015-08-18 | 2015-11-18 | 浙江建安检测研究院有限公司 | Leakage radiation testing method for accelerator head |
| CN105068105B (en) * | 2015-08-18 | 2017-09-26 | 浙江建安检测研究院有限公司 | Accelerator head leakage rediation method of testing |
| CN114594510A (en) * | 2022-02-25 | 2022-06-07 | 西北核技术研究所 | Combined type adjustable charged particle balancing body of thermoluminescent dosimeter and installation method thereof |
| CN114594510B (en) * | 2022-02-25 | 2024-06-21 | 西北核技术研究所 | Combined type adjustable charged particle balance body of thermoluminescent dosimeter and installation method thereof |
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| Publication number | Publication date |
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| CN102004261B (en) | 2012-06-27 |
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