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

Volume

41

Issue

4

fYear

1994

fDate

8/1/1994 12:00:00 AM

Firstpage

1577

Lastpage

1584

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;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.322952

Filename

322952