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SYSTEM AND METHOD FOR ESTIMATING AND MANIPULATING ESTIMATED RADIATION DOSE
专利权人:
Varian Medical Systems International AG
发明人:
Karl Otto
申请号:
US15046062
公开号:
US20160236008A1
申请日:
2016.02.17
申请国别(地区):
US
年份:
2016
代理人:
摘要:
Methods are provided for permitting manipulation of an achievable dose distribution estimate deliverable by a radiation delivery apparatus for proposed treatment of a subject. One such method comprises: determining a dose modification voxel for which it is desired to modify the dose value and a corresponding magnitude of desired dose modification; for each of a plurality of beams: (i) characterizing the beam as a two-dimensional array of beamlets, wherein each beamlet is associated with a corresponding intensity value and a ray line representing the projection of the beamlet into space; and (ii) identifying one or more dose-change beamlets which have associated ray lines that intersect the dose modification voxel; modifying the intensity values of at least one of the dose-change beamlets; and updating the achievable dose distribution estimate to account for the modified intensity values of the at least one of the dose-change beamlets.
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