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MCNPX simulation of a multileaf collimator
Author(s) -
Pönisch Falk,
Titt Uwe,
Kry Stephen F.,
Vassiliev Oleg N.,
Mohan Radhe
Publication year - 2006
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 - 10.1118/1.2163833
Subject(s) - multileaf collimator , monte carlo method , collimator , medical physics , computer science , nuclear medicine , physics , linear particle accelerator , optics , beam (structure) , mathematics , medicine , statistics
Our purpose in this work was to validate a very detailed Monte Carlo model, developed in MCNPX , of a Millennium 120 multileaf collimator integrated into a Varian Clinac 21EX treatment head. The Monte Carlo results were compared with measurements for both the 6 - MV and 18 - MV photon modes. The following comparisons were performed: depth‐dose curves, lateral profiles, multileaf collimator leakage, the tongue‐and‐grove test, and the round leaf‐end test. The good agreement between the Monte Carlo simulations and measurements showed that our model is accurate. Consequently, the benchmarks provided by our study can be used in future Monte Carlo studies.