Performance study of a fan beam collimator designed for a multi-modality small animal imaging device

被引：7

作者：

Ahmed, A. S. M. Sabbir ^{[1
]}

Kramer, Gary H. ^{[1
]}

Semmler, Wolfrad ^{[2
]}

Peter, Jorg ^{[2
]}

机构：

[1] Hlth Canada, Radiat Protect Bur, Ottawa, ON K1A 1C1, Canada

[2] German Canc Res Ctr, D-69120 Heidelberg, Germany

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2011年 / 629卷 / 01期

关键词：

Fan beam collimator; Small animal imaging device; Collimator efficiency; Spatial resolution;

D O I：

10.1016/j.nima.2010.11.102

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

This paper describes the methodology to design and conduct the performances of a fan beam collimator. This fan beam collimator was designed to use with a multi-modality small animal imaging device and the performance of the collimator was studied for a 3D geometry. Analytical expressions were formulated to calculate the parameters for the collimator. A Monte Carlo model was developed to analyze the scattering and image noises for a 3D object. The results showed that the performance of the fan beam collimator was strongly dependent on the source distribution and position. The fan beam collimator showed increased counting efficiency in comparison to a parallel hole collimator. Inside attenuating medium, the increased attenuating effect outweighed the fan beam increased counting efficiency. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：368 / 376

页数：9

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