DocumentCode :
748350
Title :
A new collimator Simulation in SIMIND based on the delta-scattering technique
Author :
Ljungberg, Michael ; Larsson, A. ; Johansson, L.
Author_Institution :
Dept. of Med. Radiat. Phys., Lund Univ., Sweden
Volume :
52
Issue :
5
fYear :
2005
Firstpage :
1370
Lastpage :
1375
Abstract :
To use conventional ray tracing methods in Monte Carlo simulation of the collimator in a scintillation camera system can be time consuming. It is however necessary to take collimator interactions into account when simulating radionuclides emitting high-energy photons that can penetrate the septa in the collimator. In this work a statistical collimator algorithm, based on the Delta-Scattering method, is evaluated using 123I. The evaluation is performed by comparing results from Monte Carlo simulations and measurements for a scintillation camera system, using point sources and a nonhomogeneous brain phantom. A good agreement can be seen for both images and energy spectra.
Keywords :
Monte Carlo methods; collimators; iodine; phantoms; radioisotopes; ray tracing; single photon emission computed tomography; 123I; Monte Carlo simulation; SIMIND; SPECT; collimator simulation; conventional ray tracing methods; delta-scattering technique; energy spectra; nonhomogeneous brain phantom; point sources; radionuclides emitting high-energy photons; scintillation camera system; statistical collimator algorithm; Brain modeling; Cameras; Electromagnetic scattering; Monte Carlo methods; Nonhomogeneous media; Optical collimators; Particle scattering; Ray tracing; Single photon emission computed tomography; Statistical analysis; Collimator; Monte Carlo; SPECT; scattering; simulation;
fLanguage :
English
Journal_Title :
Nuclear Science, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9499
Type :
jour
DOI :
10.1109/TNS.2005.858252
Filename :
1546422
Link To Document :
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