Vaitheeswaran RANGANATHAN,Prashant KUMAR,Gipson JOE ANTO
申请号：
US15571294
公开号：
US20180111005A1
申请日:
2016.05.11
申请国别(地区):
US
年份:
2018
代理人:
摘要：
The invention relates to a method of selecting a set of beam geometries for use in radiation therapy. The method (10) comprises providing (12) a plurality of candidate beam geometries optimizing (1) a radiation treatment plan with all candidate beam geometries and computing (14) a cost function value based on all candidate beam geometries. A first beam geometry from the plurality of candidate beam geometries is removed (15) and a first modified cost function value based on the candidate beam geometries without the removed first beam geometry computed (16). The first beam geometry is restored (17). The steps of removing a beam geometry, computing of a modified cost function value and restoring of the removed beam geometry are repeated (R) for all other candidate beam geometries. One or more beam geometries from the plurality of candidate beam geometries based on the modified cost function values are chosen (19).
