Statistical 3D image reconstruction for the RatCAP PET tomograph using a physically accurate, Monte Carlo based system matrix

被引：0

作者：

Shokouhi, S ^{[1
]}

Vaska, P ^{[1
]}

Southekal, S ^{[1
]}

Schlyer, D ^{[1
]}

Purschke, M ^{[1
]}

Dzordzhadze, V ^{[1
]}

Woody, C ^{[1
]}

Stoll, S ^{[1
]}

Alexoff, DL ^{[1
]}

Rubins, D ^{[1
]}

Villanueva, A ^{[1
]}

Krishnamoorthy, S ^{[1
]}

机构：

[1] Brookhaven Natl Lab, Upton, NY 11973 USA

来源：

2004 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD, VOLS 1-7 | 2004年

关键词：

D O I：

暂无

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

This work describes a fully 3D statistical image reconstruction for the RatCAP (Rat Conscious Animal PET) using a Monte Carlo based system matrix. The RatCAP consists of 12 lutetium oxyorthosilicate (LSO) - avalanche photodiode (APD) detector blocks arranged in a ring of 41.2 mm diameter. Due to the small ring diameter and low number of total lines of response (LORs), the size of a complete system matrix is small in comparison to a typical small animal scanner. This allows incorporation of an accurate, RatCAP-specific physical model with the inclusion of crystal penetration, Compton scattering in both rat's brain and detector, attenuation and the realistic event positioning errors. The trade off between the statistical accuracy and the matrix computational time as it relates to the accuracy of image reconstruction will also be discussed.

引用

页码：3901 / 3905

页数：5

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