CN103091695B - Lung counter measuring system - Google Patents
Lung counter measuring system Download PDFInfo
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- CN103091695B CN103091695B CN201310014598.5A CN201310014598A CN103091695B CN 103091695 B CN103091695 B CN 103091695B CN 201310014598 A CN201310014598 A CN 201310014598A CN 103091695 B CN103091695 B CN 103091695B
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- measuring
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/161—Applications in the field of nuclear medicine, e.g. in vivo counting
- G01T1/163—Whole body counters
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- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Molecular Biology (AREA)
- High Energy & Nuclear Physics (AREA)
- General Physics & Mathematics (AREA)
- Biomedical Technology (AREA)
- Optics & Photonics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Measurement Of Radiation (AREA)
Abstract
The invention belongs to the radiation protection technology, and particularly relates to a measuring system used for directly measuring radionuclide deposited in a lung outside a body. The technical scheme includes that a lung counter measuring system is characterized by comprising a measuring instrument (1), a positioning device (2), a measuring bed (3), a spectrometer (4) and a computer, wherein the computer is provided with passive efficiency mark software and dose calculating software. The lung counter measuring system can be used for the direct measurement of the radionuclide deposited in the lung outside the body. Due to the fact that the bed body, a detector and the like are all shielded, interference of nature background radial rays is avoided to a certain degree. The positioning device enables the detector to be parallel to the irregular wall of a chest as far as possible, and the detector is enabled to receive radial rays emitted from the radionuclide in the lung to the maximum degree, measuring effect is guaranteed, and measuring precision is improved.
Description
Technical field
The invention belongs to radiation protection technique, particularly a kind of measuring system of the radioactive nuclide for external direct measurement pulmonary deposition.
Background technology
The radioactive nuclide such as U, Pu may enter human body by respiratory tract and be deposited on lung, because these nucleic half life period are very long, and is difficult to, by circulation system metabolism, therefore can cause more serious Internal radiation injury to human body.
Irradiation technology monitoring technology comprises somatometry and two kinds of methods of excreta measurement.Apply after these two kinds of methods obtain the intake of body radioactivity nucleic, can further be back-calculated to obtain the Committed effective dose due to nucleic.Somatometry method is that detector is placed on to external certain position, and the signal response ray of certain energy of nucleic transmitting being produced by detector is realized internal radiation and monitored, and therefore also cries external direct measurement.If the content of body radioactivity nucleic is enough to make detector to produce obvious signal response, apply so somatometry technology and just can obtain result more accurately than measuring excreta, reason is that somatometry technology is quick, sensitive, without considering nucleic metabolic processes and discharge rate thereof in vivo, and some radioactive nuclide dosage is difficult to record by metabolins such as urines.For those, enter the material of the slightly solubility in body, application somatometry technology can be determined its level of activity in vivo exactly.
Somatometry technology is generally used for mixing discriminating and the analysis of γ nucleic.If nucleic is distributed in a certain certain organs, as lung, thyroid gland etc., organ counting device that can application specific is measured.
Be accompanied by the development of medical imaging technology, as: computer tomography (computed tomography, CT) technology and magnetic resonance (magnetic resonance imaging, MRI) imaging technique, can show very intuitively inside of human body structure, and image is stored with multiple digitized format.By the two dimension or the 3 D human body fault image efficiency calibration for somatometry after digitized processing that obtain by CT, MRI scanning, it is brand-new technological approaches.。
Summary of the invention
The object of the invention is: a kind of device of directly measuring for lung's radioactive nuclide is provided.
Technical scheme of the present invention is: a kind of Lung Counter measuring system based on Voxel Phantom, is characterized in that: it comprises surveying instrument, locating device, measurement bed, spectrometer and comprises passive efficiency scale software and the computing machine of Rapid Dose Calculation software;
Described surveying instrument comprises HPGe (HpGe) detector, and described HPGe detector is telescoping structure, and skin has leaded lining and stainless steel material lining, to avoid natural background ray to disturb;
Described locating device comprises vertical pillars, horizontal column, horizontal torsion post, 5 location adjusting knobs, fixture block, slide block; Described vertical pillars is vertically fixed on described measurement bed one side; Described horizontal column regulates, fixes described horizontal column in the position of described vertical pillars vertical direction perpendicular to described vertical pillars and by perpendicular positioning adjusting knob; Described horizontal torsion post is vertically connected at described horizontal column by described fixture block, thereby and by horizontal location adjusting knob, control described fixture block and move adjusting, the relative position of fixing described horizontal torsion post on described horizontal column; Described HPGe detector is installed on described horizontal torsion post by described slide block, utilize translation location adjusting knob to control the movement of described slide block on described horizontal torsion post with fixing, utilization swing location adjusting knob is controlled described HPGe detector in the swing perpendicular to described horizontal torsion post direction and fixing, utilizes rotational positioning adjusting knob to control described HPGe detector and is being parallel to the swing of described horizontal torsion post direction and is fixing;
The described bed of measuring comprises bed body and the sliding panel with side plate, there are leaded lining and stainless steel material lining in the part of described bed body base plate and side plate, interference with shielding from tested personnel back background ray and chest both sides ray, described sliding panel is arranged on described bed body base plate, for making tested personnel enter measuring state with horizontal attitude;
Described spectrometer connects described HPGe detector and described computing machine, and the nucleic data of obtaining for receiving described HPGe detector show or pass to described computing machine with spectrogram form;
Described passive efficiency scale software and Rapid Dose Calculation software obtain the information that described spectrometer transmits, and carry out analysis of spectrum and passive efficiency scale, and calculate internal dose.
The present invention can be used for the external direct measurement of lung's radioactive nuclide.Because bed body, detector etc. have all carried out shielding design, avoided the interference of natural background ray to a certain degree; Locating device makes the measurement face of detector parallel with irregular wall of the chest face as far as possible, guarantees that detector can farthest receive the energy that lung's radioactive nuclide is emitted ray, guarantees measurement effect, has improved measuring accuracy.
Accompanying drawing explanation
Accompanying drawing 1 is design sketch of the present invention;
Accompanying drawing 2 is bed body schematic diagram of the present invention;
Accompanying drawing 3 is locating device schematic diagram of the present invention.
Embodiment
Referring to accompanying drawing, a kind of Lung Counter measuring system based on Voxel Phantom, is characterized in that: it comprises surveying instrument 1, locating device 2, measures bed 3, spectrometer 4 and comprise passive efficiency scale software and the computing machine of Rapid Dose Calculation software;
Described surveying instrument 1 comprises HPGe detector, and described HPGe detector is telescoping structure, and skin has leaded lining and stainless steel material lining, to avoid natural background ray to disturb;
Described locating device 2 comprises vertical pillars 201, horizontal column 202,203,5 location adjusting knobs 204,205,206,207,208 of horizontal torsion post, fixture block 209, slide block 210; Described vertical pillars 201 is vertically fixed on described measurement bed 3 one sides; Described horizontal column 202 regulates, fixes described horizontal column 202 in the position of described vertical pillars 201 vertical directions perpendicular to described vertical pillars 201 and by perpendicular positioning adjusting knob 204; Described horizontal torsion post 203 is vertically connected at described horizontal column 202 by described fixture block 209, thereby and by horizontal location adjusting knob 205, control described fixture block 209 and move adjustings, fix the relative position of described horizontal torsion post 203 on described horizontal column 202; Described HPGe detector is installed on described horizontal torsion post 203 by described slide block 210, utilize translation location adjusting knob 206 to control the movement of described slide block 210 on described horizontal torsion post 203 with fixing, utilize to swing and locate the described HPGe detector of adjusting knob 207 control in the swing perpendicular to described horizontal torsion post 203 directions and fixing, utilize rotational positioning adjusting knob 208 to control described HPGe detector and be parallel to the swing of described horizontal torsion post 203 directions and fixing;
The described bed 3 of measuring comprises bed body 31 and the sliding panel 32 with side plate, there are leaded lining and stainless steel material lining in the part of described bed body 31 base plates and side plate, interference with shielding from tested personnel back background ray and chest both sides ray, described sliding panel 32 is arranged on described bed body 31 base plates, for making tested personnel enter measuring state with horizontal attitude;
Described spectrometer 4 connects described HPGe detector and described computing machines, and the nucleic data of obtaining for receiving described HPGe detector show or pass to described computing machine with spectrogram form;
Described passive efficiency scale software and Rapid Dose Calculation software obtain the information that described spectrometer 4 transmits, and carry out analysis of spectrum and passive efficiency scale, and calculate internal dose.
Claims (1)
1. the Lung Counter measuring system based on Voxel Phantom, is characterized in that: it comprises surveying instrument (1), locating device (2), measures bed (3), spectrometer (4) and comprise passive efficiency scale software and the computing machine of Rapid Dose Calculation software;
Described surveying instrument (1) comprises HPGe detector, and described HPGe detector is telescoping structure, and skin has leaded lining and stainless steel material lining, to avoid natural background ray to disturb;
Described locating device (2) comprises vertical pillars (201), horizontal column (202), horizontal torsion post (203), 5 location adjusting knobs (204,205,206,207,208), fixture block (209), slide block (210); Described vertical pillars (201) is vertically fixed on described measurement bed (3) one sides; Described horizontal column (202) regulates, fixes described horizontal column (202) in the position of described vertical pillars (201) vertical direction perpendicular to described vertical pillars (201) and by perpendicular positioning adjusting knob (204); Described horizontal torsion post (203) is vertically connected at described horizontal column (202) by described fixture block (209), and by horizontal location adjusting knob (205), control described fixture block (209) thus mobile regulate, the relative position of fixing described horizontal torsion post (203) on described horizontal column (202); Described HPGe detector is installed on described horizontal torsion post (203) by described slide block (210), utilize translation location adjusting knob (206) to control the movement of described slide block (210) on described horizontal torsion post (203) with fixing, utilization swing location adjusting knob (207) is controlled described HPGe detector in the swing perpendicular to described horizontal torsion post (203) direction and fixing, utilizes rotational positioning adjusting knob (208) to control described HPGe detector and is being parallel to the swing of described horizontal torsion post (203) direction and is fixing;
The described bed (3) of measuring comprises bed body (31) and the sliding panel (32) with side plate, there are leaded lining and stainless steel material lining in the part of described bed body (31) base plate and side plate, interference with shielding from tested personnel back background ray and chest both sides ray, described sliding panel (32) is arranged on described bed body (31) base plate, for making tested personnel enter measuring state with horizontal attitude;
Described spectrometer (4) connects described HPGe detector and described computing machine, and the nucleic data of obtaining for receiving described HPGe detector show or pass to described computing machine with spectrogram form;
Described passive efficiency scale software and Rapid Dose Calculation software obtain the information that described spectrometer (4) transmits, and carry out analysis of spectrum and passive efficiency scale, and calculate internal dose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310014598.5A CN103091695B (en) | 2013-01-16 | 2013-01-16 | Lung counter measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310014598.5A CN103091695B (en) | 2013-01-16 | 2013-01-16 | Lung counter measuring system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103091695A CN103091695A (en) | 2013-05-08 |
| CN103091695B true CN103091695B (en) | 2014-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310014598.5A Active CN103091695B (en) | 2013-01-16 | 2013-01-16 | Lung counter measuring system |
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| CN (1) | CN103091695B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103913760B (en) * | 2013-12-30 | 2017-05-17 | 中国人民解放军63653部队 | Method for measuring peak-to-valley ratio of equivalent chest wall thickness |
| CN106443750B (en) * | 2016-09-26 | 2020-04-07 | 南华大学 | Gamma energy spectrum dose automatic measuring device and measuring method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0288989A (en) * | 1988-09-27 | 1990-03-29 | Fuji Electric Co Ltd | Whole-body counter |
| JPH03185382A (en) * | 1989-12-15 | 1991-08-13 | Fuji Electric Co Ltd | Whole body counter |
| CN201903655U (en) * | 2010-12-23 | 2011-07-20 | 中国原子能科学研究院 | Positioning and measuring bracket for high-purity germanium detector |
| CN102590848B (en) * | 2012-02-07 | 2014-06-25 | 成都理工大学 | Portable lung counting device |
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| CN103091695A (en) | 2013-05-08 |
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