CN2684211Y - A ray probe for nuclear medical imaging device - Google Patents
A ray probe for nuclear medical imaging device Download PDFInfo
- Publication number
- CN2684211Y CN2684211Y CN 200420036534 CN200420036534U CN2684211Y CN 2684211 Y CN2684211 Y CN 2684211Y CN 200420036534 CN200420036534 CN 200420036534 CN 200420036534 U CN200420036534 U CN 200420036534U CN 2684211 Y CN2684211 Y CN 2684211Y
- Authority
- CN
- China
- Prior art keywords
- imaging device
- medical imaging
- utility
- nuclear medical
- model
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Measurement Of Radiation (AREA)
- Nuclear Medicine (AREA)
Abstract
The utility model discloses a ray probe for the nuclear medical imaging device, compising a scintillation crystal, a focusing lens and a photoelectric converter. The main point of the utility model is that the cross-section of the focusing lens is the same size as the section shape of the scintillation crystal. The photoelectric converter is arranged on the points of which has minimum focusing facular and maximum light intensity. The ray probe for the nuclear medical imaging device of the utility model can greatly improve the utilization ratio for the output optical signal, as well as reduce the size of the photoelectric converter. The utility model makes the dark current of the photoelectric converter greatly reduced. Therefore the utility model improves the synthesis performance and the resolution of the photoelectric converter.
Description
Technical field: the utility model belongs to the nuclear medical imaging device technical field, relates to a kind of ray detecting device of nuclear medical imaging device.
Background technology: the ray detector of prior art nuclear medical imaging device, mainly form by scintillation crystal and photoelectric commutator, scintillation crystal is converted to the light signal of a certain wave band with high-octane particle ray, changes light signal into electric signal by photoelectric commutator again.Existing nuclear medical imaging device generally adopts position emissron tomography equipment (PET).Its principle of work is: inject the medicine that has the radioactive nucleus element in the patient body, electronics generation annihilation reaction in positron that medicine is launched and the human body is the gamma photons of 511Kev thereby produce the opposite energy of a pair of direction.This is received by the PET detector gamma photons, handle through electronic circuit and can determine the position of falling into oblivion, again by computing machine will many annihilations positions be redeveloped into image, can obtain having the diagnosis image of patient information.For employed detector in the position emissron tomography equipment (PET), its photoelectric commutator generally adopts photomultiplier or photodiode.The detector of this structure, because photoelectric commutator sticks on the exiting surface of scintillation crystal, effectively light-receiving area is restricted.Cause the signal of conversion very weak; If increase the light-receiving area of photoelectric commutator, cause electric capacity increase, dark current to increase, signal quality is reduced.
Summary of the invention: the purpose of this utility model provides a kind of ray detector of exporting light signal utilization factor height, nuclear medical imaging device that resolving effect is good, to remedy the deficiencies in the prior art.
For achieving the above object, the ray detector of the utility model nuclear medical imaging device, comprise scintillation crystal, condenser lens and photoelectric commutator, its main points are that the xsect of condenser lens is identical with cross sectional shape, the size of scintillation crystal, and photoelectric commutator is arranged on focal beam spot minimum, light intensity maximum.
But said condenser lens simple lens or lens combination.
Said photoelectric commutator is photomultiplier or photodiode.
The ray detector of the utility model nuclear medical imaging device, both can improve utilization factor greatly to the output light signal, can reduce the size of photoelectric commutator again, the dark current of photoelectric commutator is reduced greatly, thereby improve the combination property and the resolution of photoelectric commutator.
Description of drawings: accompanying drawing is the utility model structural representation.
Embodiment: with reference to the accompanying drawings, the ray detector of the utility model nuclear medical imaging device, comprise scintillation crystal 2, condenser lens 5 and photoelectric commutator 8, the xsect of condenser lens 5 is identical with cross sectional shape, the size of scintillation crystal 2, and photoelectric commutator 8 is arranged on focal beam spot minimum, light intensity maximum; Scintillation crystal 2 can adopt the bismuth germanium oxide material, and its volume size is 2～5mm * 2～5mm * 30mm; Condenser lens 5 can be simple lens or lens combination; Photoelectric commutator can be photomultiplier or photodiode.
Its course of work is: gamma rays 1 is through scintillation crystal 2, change light signal 3 line focus lens 5 again into by the high energy particle ray, light signal 3 is focused on, photoelectric commutator 8 places the focus place that converges light 6, converge light 6 and change electric signal 9 into, again output after amplifier 10 amplifies through photoelectric commutator 8.
Claims (3)
1, a kind of ray detector of nuclear medical imaging device, comprise scintillation crystal, condenser lens and photoelectric commutator, it is characterized in that the xsect of condenser lens is identical with cross sectional shape, the size of scintillation crystal, photoelectric commutator is arranged on focal beam spot minimum, light intensity maximum.
2, the ray detector of nuclear medical imaging device according to claim 1, but it is characterized in that said condenser lens simple lens or lens combination.
3, the ray detector of nuclear medical imaging device according to claim 1 is characterized in that said photoelectric commutator is photomultiplier or photodiode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420036534 CN2684211Y (en) | 2004-03-23 | 2004-03-23 | A ray probe for nuclear medical imaging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420036534 CN2684211Y (en) | 2004-03-23 | 2004-03-23 | A ray probe for nuclear medical imaging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2684211Y true CN2684211Y (en) | 2005-03-09 |
Family
ID=34607536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420036534 Expired - Fee Related CN2684211Y (en) | 2004-03-23 | 2004-03-23 | A ray probe for nuclear medical imaging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2684211Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102890284A (en) * | 2012-10-10 | 2013-01-23 | 中国科学院高能物理研究所 | Nuclear detection device |
| CN103091700A (en) * | 2013-01-09 | 2013-05-08 | 中国科学院空间科学与应用研究中心 | Satellite-borne pulsar X-ray spectrometer |
| CN103900562A (en) * | 2014-04-04 | 2014-07-02 | 中国科学院空间科学与应用研究中心 | Pulsar navigation X-ray timing explorer |
| CN105380672A (en) * | 2015-10-28 | 2016-03-09 | 沈阳东软医疗系统有限公司 | PET detection system and method for increasing resolution ratio of PET detection system |
-
2004
- 2004-03-23 CN CN 200420036534 patent/CN2684211Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102890284A (en) * | 2012-10-10 | 2013-01-23 | 中国科学院高能物理研究所 | Nuclear detection device |
| CN102890284B (en) * | 2012-10-10 | 2015-04-08 | 中国科学院高能物理研究所 | Nuclear detection device |
| CN103091700A (en) * | 2013-01-09 | 2013-05-08 | 中国科学院空间科学与应用研究中心 | Satellite-borne pulsar X-ray spectrometer |
| CN103900562A (en) * | 2014-04-04 | 2014-07-02 | 中国科学院空间科学与应用研究中心 | Pulsar navigation X-ray timing explorer |
| CN105380672A (en) * | 2015-10-28 | 2016-03-09 | 沈阳东软医疗系统有限公司 | PET detection system and method for increasing resolution ratio of PET detection system |
| CN105380672B (en) * | 2015-10-28 | 2020-06-16 | 东软医疗系统股份有限公司 | PET detection system and method for improving resolution of PET detection system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102958439B (en) | X-ray computed tomography apparatus and radiation detector | |
| CN102764138B (en) | Multi-mode little animal molecular image imaging device and imaging method | |
| JP5930973B2 (en) | Radiation detector | |
| WO2006049523B1 (en) | Tomography by emission of positrons (pet) system | |
| CN102253404B (en) | Portable neutron detection device | |
| CN2684211Y (en) | A ray probe for nuclear medical imaging device | |
| Milster et al. | A modular scintillation camera for use in nuclear medicine | |
| CN102183778A (en) | Flashing probe | |
| CN201197713Y (en) | Structure of portable type multifunctional micro-dose medical CT machine | |
| CN2389619Y (en) | Ray detection device | |
| WO2010080046A2 (en) | High resolution gamma camera | |
| CN202210159U (en) | Portable neutron detection device | |
| WO2023010990A1 (en) | Measurement system for three-dimensional distribution of bnct-based thermal neutron flux inside simulation water model | |
| CN102783961B (en) | Combined detector for positron emission tomography | |
| US10849586B2 (en) | Low-dose x-ray imaging system | |
| CN207663074U (en) | A kind of nuclear leakage survey meter | |
| RU177857U1 (en) | RING DETECTOR OF THERMAL NEUTRONS | |
| Miller et al. | Progress of BazookaSPECT | |
| Iwata et al. | Design of combined X-ray CT and SPECT systems for small animals | |
| CN211318761U (en) | Probe, detector and detection system | |
| CN107765287A (en) | A kind of nuclear leakage survey meter and its method for detecting pollution sources | |
| CN114488256A (en) | Novel multi-particle ray radiation detector | |
| US4613756A (en) | Mercuric iodide light detector and related method | |
| Yamamoto et al. | Development of a high resolution beta camera for a direct measurement of positron distribution on brain surface | |
| CN206133022U (en) | Collect device of plastic scintillator fluorescence photon |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |