Premium
Improving agreement between radiation‐delineated field edges on simulation and portal films: The edge tolerance test tool
Author(s) -
McCullough Edwin C.,
McCollough Kevin P.,
Simon Scott P.
Publication year - 1993
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 - 10.1118/1.597129
Subject(s) - enhanced data rates for gsm evolution , computer science , simulation , field (mathematics) , test (biology) , artificial intelligence , mathematics , paleontology , pure mathematics , biology
The anatomy at the edge of a treatment machine portal film may differ from that shown by the delineator lines on a simulator film by up to 10 mm, even if both the simulator and the treatment machine meet accepted criteria for mechanical tolerances. To assure that this possibility is minimized requires some form of overall alignment check between the simulator and the treatment machine. A new test device, the edge tolerance test tool (ET 3 ), has been designed to permit a quick and accurate check on whether portal film disagreement with simulator films is due to an accumulation of tolerances. Its use should eliminate one source of this common problem.