Sensitivity assessment of wide Axial Field of View PET systems via Monte Carlo simulations of NEMA-like measurements

被引：26
作者：
Couceiro, M. [1 ]
Ferreira, N. C.
Fonte, P.
机构：
[1] Lab Instrumentacao & Fis Expt Particulas, LIP, P-3004516 Coimbra, Portugal
[2] ISEC, P-3031199 Coimbra, Portugal
[3] IBILI, P-3004516 Coimbra, Portugal
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2007年 / 580卷 / 01期
关键词：
pet; simulation; sensitivity;
D O I：
10.1016/j.nima.2007.05.145
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The sensitivity characteristics of Positron Emission Tomography (PET) systems with wide Axial Field of View (AFOV) was studied by MonteCarlo simulations complemented by an approximate analytical model, aiming at full-body human PET systems with AFOV in the order of 200 cm. Simulations were based on the GEANT4 package and followed closely the NEMA NU-2 1994 norm. The sensitivity, dominated by the solid angle, grows strongly with the AFOV and with the axial acceptance angle, while the scatter fraction is almost independent from the geometry. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：485 / 488
页数：4
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