Effect of shielding the radioactivity outside the field of view on image quality in a dual head coincidence

被引：0

作者：

Sossi, V ^{[1
]}

Pointon, B ^{[1
]}

Cohen, P ^{[1
]}

Johnson, RR ^{[1
]}

Ruth, TJ ^{[1
]}

机构：

[1] TRIUMF, UBC, Vancouver, BC V6T 2A3, Canada

来源：

1999 IEEE NUCLEAR SCIENCE SYMPOSIUM - CONFERENCE RECORD, VOLS 1-3 | 1999年

关键词：

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Limited count rate ability and open geometry make the image quality obtained from dual head cameras very sensitive to radioactivity outside the camera field of view. The spatial distribution of nan true events, scatter and randoms, originating from radioactivity outside the FOV was investigated. The image quality quantified with the noise equivalent count rate, improved by up to 58% as a consequence of shielding. Radioactivity in the first 10 cm outside the FOV was found to contribute most significantly to the detected events. A modular and easily movable patient body shield was designed.

引用

页码：1354 / 1358

页数：3

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