DocumentCode :
2556535
Title :
FastMIST: A Fast Molecular Imaging SimulaTor
Author :
Ryder, Will ; Angelis, Georgios ; Bashar, Rezaul ; Kyme, Andre ; Fulton, Roger ; Yi-Hwa Liu ; Meikle, Steven
Author_Institution :
Fac. of Health Sci. & Brain, Univ. of Sydney, Sydney, NSW, Australia
fYear :
2012
fDate :
Oct. 27 2012-Nov. 3 2012
Firstpage :
2723
Lastpage :
2726
Abstract :
The Fast Molecular Imaging SimulaTor (FastMIST) is a hybrid analytical/Monte Carlo code which can simulate almost any arbitrary time-varying source distribution. Additionally, the position of each event can be spatially transformed according to a predefined temporal motion pattern allowing for the simulation of motion-corrupted data. The core algorithms are implemented in C++ following a modular design that is readily parallelisable using OpenMP. The execution time for a FastMIST simulation is greatly reduced compared to a full Monte Carlo simulation, such as GATE, as FastMIST uses forced detection coupled to random sampling of experimentally measured depth-dependent PSFs for parallel hole collimators. A FastMIST simulation of a parallel-hole collimator gamma camera, acquiring 300k photons per projection (64 projections) with source attenuation modelling disabled, took less than 30 seconds on an 15 Intel processor (2.4Ghz).
Keywords :
C++ language; Monte Carlo methods; application program interfaces; collimators; digital simulation; image motion analysis; image sampling; medical image processing; optical transfer function; parallel programming; single photon emission computed tomography; 15 Intel processor; C++ core algorithms; FastMIST simulation; OpenMP; attenuation modelling; depth-dependent PSF; fast molecular imaging simulator; hybrid analytical-Monte Carlo code; motion-corrupted data; parallel-hole collimator gamma camera; photon acquisition; point spread functions; random sampling; temporal motion pattern; time-varying source distribution;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2012 IEEE
Conference_Location :
Anaheim, CA
ISSN :
1082-3654
Print_ISBN :
978-1-4673-2028-3
Type :
conf
DOI :
10.1109/NSSMIC.2012.6551619
Filename :
6551619
Link To Document :
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