Off-axis primary-dose measurements using a mini-phantom
نویسندگان
چکیده
منابع مشابه
Off-axis primary-dose measurements using a mini-phantom.
The characterization of the incident photon beam is usually divided into its dependence on collimator setting (head-scatter factor) and off-axis position (primary off-axis ratio). These parameters are normally measured "in air" with a build-up cap thick enough to generate full dose build-up at the depth of dose maximum. In order to prevent any influence from contaminating electrons, it has been...
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ژورنال
عنوان ژورنال: Medical Physics
سال: 1997
ISSN: 0094-2405
DOI: 10.1118/1.597997