The SIMIND Monte Carlo program
Version 6.1 has now been released with some new things included. The major development has been the 'smc2castor' program that makes it easy to reconstruct SPECT projections with the new castor-recon program from the castor-project.org
The entire code is written in FORTRAN- 90 and includes versions that are fully operational on Linux systems (x86), Mac systems running OSX, and on Windows (x86). The majority of the main code structure is similar for all of the operating systems; but, in cases where the operating system becomes unique, additional information on the code as it pertains to the specific system is provided.
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The usefulness in a Monte Carlo program is the ability to study in detail why images from nuclear medicine scintillation camera systems is degraded. For example, the images above show a series of simulations. First image correspond to a imaging situation without patient motion and a perfect camera resolution. Second image include patient movements (respiration and heart beating). Next is an image with a normal SPECT system resolution for patient movements. The two next images show degradation due to a) photon attenuation and b) photon attenuation and scatter contribution. In the lst image a realistic noise level have been added.