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Systems and methods for composite dose quality assurance with three dimensional arrays
专利权人:
发明人:
Benjamin Nelms,Jakub Kozelka,William E. Simon
申请号:
US14044811
公开号:
US08927921B1
申请日:
2013.10.02
申请国别(地区):
US
年份:
2015
代理人:
摘要:
A method for performing composite dose quality assurance with a three-dimensional (3D) radiation detector array includes delivering a radiation fraction to the 3D array according to a radiation treatment (RT) plan, measuring absolute dose per detector of the 3D array, per unit of time, determining a radiation source emission angle per unit of time, synchronizing the RT plan with the measured absolute doses and determined radiation source emission angles to determine an absolute time for a control point of each beam of the synchronized RT plan, converting the beams of the synchronized RT plan into a series of sub-beams, generating a 3D relative dose grid for each of the sub-beams, applying a calibration factor grid to each of the 3D relative dose grids to determine a 3D absolute dose grid for each of the sub-beams, summing the 3D absolute dose grids to generate a 3D absolute dose deposited in the 3D array, and determining a 3D dose correction grid for application to the RT plan based on the 3D absolute dose.
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中国工程科技知识中心
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