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An automated procedure for the quality assurance of electron beam output and energy
Author(s) -
Woo M. K.,
Videla N. G.
Publication year - 2004
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 - 10.1118/1.1688040
Subject(s) - quality assurance , energy (signal processing) , cathode ray , sensitivity (control systems) , computer science , beam (structure) , electron , medical physics , optics , physics , electronic engineering , engineering , nuclear physics , operations management , external quality assessment , quantum mechanics
In this article, we report on the development of a simple and accurate method for quality assurance of electron beam output and energy. Aluminum disks of thicknesses d maxor d 50of the particular electron energy are positioned sequentially over a parallel‐plate ion chamber and the ratio of the two signals is compared to the standard. The positioning of the aluminum disks is carried out remotely and automatically to eliminate the necessity of multiple setups. One method utilizes the remote control feature of the treatment couch and another employs a motor‐driven carousel. The superior sensitivity over a commercially available energy monitor is illustrated.