Premium
Monte Carlo simulation of the image formation process in portal imaging
Author(s) -
Bissonnette JeanPierre,
Munro P.,
Cunningham I. A.
Publication year - 2003
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.1625511
Subject(s) - monte carlo method , medical imaging , medical physics , process (computing) , computer science , physics , artificial intelligence , mathematics , statistics , operating system
We have written Monte Carlo programs to simulate the formation of radiological images. Our code is used to propagate a simulated x‐ray fluence through each component of an existing video‐based portal imaging system. This simulated fluence consists of a 512 × 512 pixel image containing both contrast‐detail patterns as well as checker patterns to assess spatial resolution of the simulated portal imager. All of the components of the portal imaging system were modeled as a cascade of eight linear stages. Using this code, one can assess the visual impact of changing components in the imaging chain by changing the appropriate probability density function. Virtual experiments were performed to assess the visual impact of replacing the lens and TV camera by an amorphous silicon array, and the effect of scattered radiation on portal images.