System and method for regulating delivered radiation in a radiation-emitting device
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United States of America Patent
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Apr 8, 1997
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N/A
app pub date -
Jul 20, 1995
filing date -
Jul 20, 1995
priority date (Note) -
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Abstract
In a radiation emitting device, particularly in a radiation treatment device, the actual radiation delivered to an object via a radiation beam is adjusted dependent on the dimensions of an opening in a plate arrangement provided between a radiation source and an object so that the radiation output has a constant output factor over an irradiation field, regardless of the size of the opening. The output factor is defined as the ratio of the radiation output in air with a scatterer (such as shielding plates) in the beam path to the radiation output without the scatterer for a reference field.
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