Abstract:
:A statistical analysis has been made of ionometrically measured parameters related to the central-axis output, the beam symmetry, the beam flatness, and the depth dose for the 6-MV x-ray beam from the Therac-6 linear accelerator. The means and coefficients of variation of the measurements are determined on a monthly basis for each parameter. Mean coefficients of variation less than +/- 1% have been determined and are useful in establishing the optimal limits of acceptance of these parameters. The results of this study indicate that the long-term stability of the radiation parameters associated with this unit can be maintained within acceptable limits with a consistent quality-assurance program.
journal_name
Med Physjournal_title
Medical physicsauthors
Dawson DJ,Gribble MAdoi
10.1118/1.595642subject
Has Abstractpub_date
1984-09-01 00:00:00pages
708-11issue
5eissn
0094-2405issn
2473-4209journal_volume
11pub_type
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