Title :
Monte Carlo simulation of transmission studies using a planar source with a parallel collimator and a line source with a fan-beam collimator
Author :
Ljungberg, Michael ; Strand, Sven-Erik ; Rajeevan, Nallakkandi ; King, Michael A.
Author_Institution :
Dept. of Radiat. Phys., Lund Univ., Sweden
fDate :
8/1/1994 12:00:00 AM
Abstract :
A knowledge of the distribution of the attenuation coefficient is generally required for a successful correction of attenuation in nonhomogeneous regions. This can be accomplished by performing transmission measurement with either parallel or fan-bean collimation. The Monte Carlo method makes it possible to fully evaluate the results of such a correction. This study shows results from such simulations for both parallel and fan-beam transmission imaging. Also, examples of the effect of down-scatter from an emission 99mTc radionuclide into the energy window for a transmission 153Gd radionuclide are shown
Keywords :
Monte Carlo methods; computerised tomography; radioisotope scanning and imaging; Gd; Monte Carlo simulation; Tc; attenuation coefficient distribution; emission 99mTc radionuclide; energy window; fan-beam collimator; line source; medical diagnostic imaging; nonhomogeneous regions; nuclear medicine; parallel collimator; planar source; single photon emission computerised tomography; transmission 153Gd radionuclide; Attenuation; Biomedical imaging; Cameras; Cancer; Electromagnetic scattering; Head; Imaging phantoms; Optical collimators; Particle scattering; Single photon emission computed tomography;
Journal_Title :
Nuclear Science, IEEE Transactions on
