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A Computer Simulation of the Scanning Process Using a System Response to Line Source Distribution Function

Veterans Administration Hospital and Duke University Medical Center, Durham, North Carolina

Correspondence: For reprints contact: Ralph J. Gorten, Div. of Nuclear Medicine, Duke University Medical Center, Durham, N.C. 27706.

ABSTRACT

A distribution function has been derived experimentally from a system response to a vertical line source. This function describes the collimator response to a solid source and allows for scattering phenomena if necessary. It is used together with a modified normal random number generator to simulate the scanning process. The simulation is effected by scanning a digital phantom. This digital phantom is a two-dimensional array of numbers whose relationships are arbitrary but which represent the source or organ being modeled by the phantom. This simulation model is useful in the testing, evaluation and improvement of an investigator's digital computer techniques for radionuclide scan analysis.