IMRT 2018

Cone Beam Arc IMRT

Next generation&IMAT& (i.e.&VMAT)&2008&2

First&generation&IMAT&&&&&&&&&&&&&& 2000&2 2007

• Treatment&plans&were& developed&using& forward' planning' or&simple&beam& shaping&based&on&the&patient’s& anatomy • The& dose/rate'was'constant as& the&gantry&rotated&around&the& patient

• Treatment&plans&were&

generated&using& full'inverse' planning optimization

• The& dose/rate'varies' as&the& gantry&rotates&around&the& patient