Title :
Design of coded aperture collimator for high-resolution and high-sensitivity MicroSPECT
Author :
Jiang, Shuzhou ; Wu, Zhaoxia ; Ma, Tianyu ; Jin, Yongjie
Author_Institution :
Dept. of Eng. Phys., Tsinghua Univ., Beijing
Abstract :
Collimator is a crucial factor for MicroSPECT, which determines its spatial resolution, sensitivity, and detection-efficiency. Based on coded aperture theory, a new coded aperture collimator is designed; furthermore, its parameters and object-to-detector distance are optimized via Monte-Carlo simulation. MicroSPECT with this collimator is designed to achieve sub-millimeter geometric resolution, whose sensitivity will be more than 100 times higher than A-SPECT, and more than 10 times higher than ordinary Multipinhole-SPECT
Keywords :
Monte Carlo methods; collimators; image reconstruction; image resolution; single photon emission computed tomography; Monte-Carlo simulation; coded aperture collimator; coded aperture theory; detection-efficiency; image reconstruction; microSPECT; multipinhole-SPECT; object-to-detector distance; sensitivity; spatial resolution; sub-millimeter geometric resolution; Apertures; Design optimization; Detectors; Object detection; Optical collimators; Optical imaging; Physics; Sensor arrays; Spatial resolution; Telephony;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2004 IEEE
Conference_Location :
Rome
Print_ISBN :
0-7803-8700-7
Electronic_ISBN :
1082-3654
DOI :
10.1109/NSSMIC.2004.1466311
