Plan optimization

Conceptually, plan optimization proceeds as follows. For each treatment field, a beam’s-eye-view of the target is used to divide the beam into beamlets. For an 80-leaf MLC with leaves that project to 1 cm at isocenter, the beamlets are 1 cm x 1 cm. In the figure, 1 field is divided into 37 beamlets. Note that beamlets that do not intersect the target are discarded.


Why Are We So Intent on Killing Ourselves?
by Rodney Warner, JD
April 12, 2016