CAJ | 학술논문

描述了一套基于位置灵敏光电倍增管(PSPMT)的小型γ相机系统的建立与测试。该系统由PSPMT、整体式NaI(Tl)晶体、平行孔铅准直器和电子学系统构成，其对57Co (122keV)泛源γ射线的能量分辨率为27%；对于2mm直径铅准直孔的空间分辨率(FWHM)约为4mm。测试结果表明，这种γ相机在小视野放射性显影方面与传统γ相机相比有其优越性。
묘술료일투기우위치령민광전배증관(PSPMT)적소형γ상궤계통적건립여측시。해계통유PSPMT、정체식NaI(Tl)정체、평행공연준직기화전자학계통구성，기대57Co (122keV)범원γ사선적능량분변솔위27%；대우2mm직경연준직공적공간분변솔(FWHM)약위4mm。측시결과표명，저충γ상궤재소시야방사성현영방면여전통γ상궤상비유기우월성。
A γ camera based on Position Sensitive Photomultiplier Tube (PSPMT) has been set up and tested. The system comprised a PSPMT, a plane NaI(Tl) crystal, a parallel collimator and DAQ system. The energy resolution for 57Co (122keV) was 27%, and the spacial resolution (FWHM) was ～4mm for 2mm diameter aperture. The result showed that this type of gamma camera was superior to the standard anger camera.