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What is IMRT ???
Forward planning for dose
homogeneity – field-in-
field/electronic compensation
Field arrangement as for standard
3D-CRT (basically tangents)
Inverse planning with dosimetric
constraints
Extended field arrangement,
including non-coplanar fields and
non-tangent angles
Forward IMRT
inverse-planned IMRT
Evidence from clinical trials
(reviews: Staffurth Clin Oncol 2010
McCormick Semin Radiat Oncol 2011)