SIMIND Monte Carlo simulation of a single photon emission CT

Bahreyni Toossi, M. T. and Islamian, J. P. and Momennezhad, M. and Ljungberg, M. and Naseri, S. H. (2010) SIMIND Monte Carlo simulation of a single photon emission CT. Journal of Medical Physics, 35 (1). pp. 42-47.

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Abstract

In this study, we simulated a Siemens E.CAM SPECT system using SIMIND Monte Carlo program to acquire its experimental characterization in terms of energy resolution, sensitivity, spatial resolution and imaging of phantoms using 99m Tc. The experimental and simulation data for SPECT imaging was acquired from a point source and Jaszczak phantom. Verification of the simulation was done by comparing two sets of images and related data obtained from the actual and simulated systems. Image quality was assessed by comparing image contrast and resolution. Simulated and measured energy spectra (with or without a collimator) and spatial resolution from point sources in air were compared. The resulted energy spectra present similar peaks for the gamma energy of 99m Tc at 140 KeV. FWHM for the simulation calculated to14.01 KeV and 13.80 KeV for experimental data, corresponding to energy resolution of 10.01and 9.86 compared to defined 9.9 for both systems, respectively. Sensitivities of the real and virtual gamma cameras were calculated to 85.11 and 85.39 cps/MBq, respectively. The energy spectra of both simulated and real gamma cameras were matched. Images obtained from Jaszczak phantom, experimentally and by simulation, showed similarity in contrast and resolution. SIMIND Monte Carlo could successfully simulate the Siemens E.CAM gamma camera. The results validate the use of the simulated system for further investigation, including modification, planning, and developing a SPECT system to improve the quality of images.

Item Type: Article
Additional Information: Cited By :22 Export Date: 16 February 2020 Correspondence Address: Islamian, J. P.; Medical Physics Department, Mashhad University of Medical Sciences, Post box 91779, 48564, Mashhad, Iran; email: pirayeshej831@mums.ac.ir
Uncontrolled Keywords: 99m Tc imaging Emission tomography Monte Carlo simulation SIMIND SPECT technetium 99m article contrast controlled study energy resource gamma spectrometry image quality Monte Carlo method phantom scintillation camera sensitivity analysis simulation single photon emission computer tomography
Subjects: WN Radiology . Diagnostic Imaging
Divisions: Mashhad University of Medical Sciences
Depositing User: mr lib4 lib4
Date Deposited: 03 Mar 2020 05:45
Last Modified: 03 Mar 2020 05:45
URI: http://eprints.mums.ac.ir/id/eprint/12938

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