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

Volume

5

fYear

2004

fDate

16-22 Oct. 2004

Firstpage

2980

Lastpage

2984

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2004 IEEE

Conference_Location

Rome

ISSN

1082-3654

Print_ISBN

0-7803-8700-7

Electronic_ISBN

1082-3654

Type

conf

DOI

10.1109/NSSMIC.2004.1466311

Filename

1466311