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Rotational IMRT (VMAT / RapidArc)
Volume-modulated Arc Therapy (VMAT)
Efficient delivery in a single gantry arc
High dose conformation/modulation
using a full 360 deg range of gantry rotation
Engineer dose computation to support accurate high-
resolution sampling of all beam directions during
planning.
Planning includes
“
efficiency constraints
”
to coordinate:
leaf motion/speed
gantry speed
dose rate.
Otto, Med. Phys. 35(1) 310 (2008)
Bzdusek et al, Med. Phys. 36(5) 2328 (2009)