Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2012, Vol. 23 ›› Issue (4): 226-229 doi: 10.13538/j.1001-8042/nst.23.226-229

• RADIOCHEMISTRY, RADIOPHARMACEUTICALS AND NUCLEAR MEDICIN • Previous Articles     Next Articles

Characteristics of parallel-hole and pinhole collimators for nuclear medicine imaging

LIU Silu1 ZHU Jie 2   

  1. 1 The Second Artilleiy Equipment Academy of PLA,Beijing 100085,China 2 96261 Unit of Chinese People’s Liheration Army,Lingbao 472500,China
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LIU Silu, ZHU Jie. Characteristics of parallel-hole and pinhole collimators for nuclear medicine imaging.Nuclear Science and Techniques, 2012, 23(4): 226-229     doi: 10.13538/j.1001-8042/nst.23.226-229

Abstract:

In this paper,the spatial resolution and geometry sensitivity of parallel- and pin-hole collimators in compact gamma camera are presented,and quantitatively compared by GEANT4 code in Monte-Carlo library.The results show that the geometry sensitivity for pinhole collimator rapidly drops with increasing the gamma source-to- collimator distance(SCD); and for parallel-hole collimator,mildly.Meanwhile,the spatial resolution for pin-hole collimator mildly deteriorates; and for parallel-hole collimator,severely.The pin-hole collimator for close imaging objects has higher geometry sensitivity than parallel-hole collimator.Our findings are helpful for setting compact gamma camera collimators in nuclear medicine imaging.

Key words: Spatial resolution, Geometric sensitivity, Collimator, Nuclear medicine