论文信息 - A new collimator simulation in SIMIND based on the Delta-Scattering technique

A new collimator simulation in SIMIND based on the Delta-Scattering technique

To use conventional ray tracing methods in Monte Carlo simulation of the collimator in a scintillation camera system can be time consuming. It is however necessary to take collimator interactions into account when simulating radionuclides emitting high-energy photons that can penetrate the septa in the collimator. In this work a statistical collimator algorithm, based on the Delta-Scattering method, is evaluated using /sup 123/I. The evaluation is performed by comparing results from Monte Carlo simulations and measurements for a scintillation camera system, using point sources and an RSD phantom. A good agreement can be seen for both images and energy spectra.

[1] Stephen C. Moore,et al. Approximation of hexagonal holes by square holes in Monte Carlo simulation of gamma-camera collimation , 2002 .

[2] M. Ljungberg,et al. A Monte Carlo program for the simulation of scintillation camera characteristics. , 1989, Computer methods and programs in biomedicine.

[3] K F Koral,et al. Characterization of scatter and penetration using Monte Carlo simulation in 131I imaging. , 2000, Journal of nuclear medicine : official publication, Society of Nuclear Medicine.

[4] S. Moore,et al. The effects of compensation for scatter, lead X-rays and high-energy contamination on lesion detectability and activity estimation in Ga-67 imaging , 2002, 2002 IEEE Nuclear Science Symposium Conference Record.

[5] G. Knoll. Radiation detection and measurement , 1979 .

[6] Eric C. Frey,et al. Combination of MCNP and SimSET for Monte Carlo simulation of SPECT with medium and high energy photons , 2001, 2001 IEEE Nuclear Science Symposium Conference Record (Cat. No.01CH37310).