Physics Bucharest 2017
6/3/2017
IMRT fields = 2D modulation
Could (potentially) consider each leaf pair separately
Preferable to consider 2D matrix and group leaves – maximise segment area – minimise number of segments
ESTRO physics course 2017
73
IMRT delivery methods
Dynamic More versatile - more intensity levels
Faster overall treatment time - beam stays on Smooth transition - but depends on leaf speed MU efficiency lower Gantry rotation
VMAT/ RapidArc
ESTRO physics course 2017
74
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