Journal of Medical Physics
ORIGINAL ARTICLE
Year
: 2010  |  Volume : 35  |  Issue : 1  |  Page : 42--47

SIMIND Monte Carlo simulation of a single photon emission CT


MT Bahreyni Toossi1, J Pirayesh Islamian2, M Momennezhad3, M Ljungberg4, SH Naseri2 
1 Medical Physics Research Center, Mashhad University of Medical Sciences, Iran
2 Medical Physics Department, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
3 Nuclear Medicine Department, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
4 Medical Radiation Physics Department, Clinical Sciences-Lund, Lund University, Lund, Sweden

Correspondence Address:
J Pirayesh Islamian
Medical Physics Department, Mashhad University of Medical Sciences, Post box 9177948564, Mashhad
Iran

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.


How to cite this article:
Bahreyni Toossi M T, Islamian J P, Momennezhad M, Ljungberg M, Naseri S H. SIMIND Monte Carlo simulation of a single photon emission CT.J Med Phys 2010;35:42-47


How to cite this URL:
Bahreyni Toossi M T, Islamian J P, Momennezhad M, Ljungberg M, Naseri S H. SIMIND Monte Carlo simulation of a single photon emission CT. J Med Phys [serial online] 2010 [cited 2021 Jan 26 ];35:42-47
Available from: https://www.jmp.org.in/article.asp?issn=0971-6203;year=2010;volume=35;issue=1;spage=42;epage=47;aulast=Bahreyni;type=0