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Capabilities of the Monte Carlo Simulation Codes for Modeling of a Small Animal SPECT Camera

Capabilities of the Monte Carlo Simulation Codes for Modeling of a Small Animal SPECT Camera Purpose This study aims to compare Monte Carlo-based codes’ characteristics in the determination of the basic parameters of a high-resolution single photon emission computed tomography (HiReSPECT) scanner. Methods The geometry of this dual-head gamma camera equipped with a pixelated CsI(Na) scintillator and lead hexagonal hole collimator were accurately described in the GEANT4 Application for the Tomographic Emission (GATE), Monte Carlo N-particle extended (MCNP-X), and simulation of imaging nuclear detectors (SIMIND) codes. We implemented simulation procedures similar 99m to the experimental test for calculation of the energy spectra, spatial resolution, and sensitivity of HiReSPECT by using Tc sources. Results The energy resolutions simulated by SIMIND, MCNP-X, and GATE were 17.53, 19.24, and 18.26%, respectively, while it was calculated at 19.15% in experimental test. The average spatial resolutions of the HiReSPECT camera at 2.5 cm from the collimator surface simulated by SIMIND, MCNP-X, and GATE were 3.18, 2.9, and 2.62 mm, respectively, while this parameter was reported at 2.82 mm in the experiment test. The sensitivities simulated by SIMIND, MCNP-X, and GATE were 1.44, 1.27, and 1.38 cps/μCi, respectively, on the collimator surface. Conclusions Comparison between simulation and experimental results showed that among these MC codes, GATE enabled to accurately model http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nuclear Medicine and Molecular Imaging Springer Journals

Capabilities of the Monte Carlo Simulation Codes for Modeling of a Small Animal SPECT Camera

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References (24)

Publisher
Springer Journals
Copyright
Copyright © 2018 by Korean Society of Nuclear Medicine
Subject
Medicine & Public Health; Nuclear Medicine; Imaging / Radiology; Orthopedics; Cardiology; Oncology
ISSN
1869-3474
eISSN
1869-3482
DOI
10.1007/s13139-018-0530-0
Publisher site
See Article on Publisher Site

Abstract

Purpose This study aims to compare Monte Carlo-based codes’ characteristics in the determination of the basic parameters of a high-resolution single photon emission computed tomography (HiReSPECT) scanner. Methods The geometry of this dual-head gamma camera equipped with a pixelated CsI(Na) scintillator and lead hexagonal hole collimator were accurately described in the GEANT4 Application for the Tomographic Emission (GATE), Monte Carlo N-particle extended (MCNP-X), and simulation of imaging nuclear detectors (SIMIND) codes. We implemented simulation procedures similar 99m to the experimental test for calculation of the energy spectra, spatial resolution, and sensitivity of HiReSPECT by using Tc sources. Results The energy resolutions simulated by SIMIND, MCNP-X, and GATE were 17.53, 19.24, and 18.26%, respectively, while it was calculated at 19.15% in experimental test. The average spatial resolutions of the HiReSPECT camera at 2.5 cm from the collimator surface simulated by SIMIND, MCNP-X, and GATE were 3.18, 2.9, and 2.62 mm, respectively, while this parameter was reported at 2.82 mm in the experiment test. The sensitivities simulated by SIMIND, MCNP-X, and GATE were 1.44, 1.27, and 1.38 cps/μCi, respectively, on the collimator surface. Conclusions Comparison between simulation and experimental results showed that among these MC codes, GATE enabled to accurately model

Journal

Nuclear Medicine and Molecular ImagingSpringer Journals

Published: Jun 21, 2018

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