IMRT

A moving treatment beam … Gimbaled Linac

Keeping the MLC/FF = Still very heavy (700kg)

Vero “ reduced ” beam line

Electron Gun

RF Power

Astronaut training: “ the gimbals chair ”

Accelerator

Target Primary collimator

Flattening filter

-Allows rotation of the linac/MLC assembly around the “ Center of mass ” -Only 2 DOF dynamic ( Pan/Tilt rotation ) -MLC and flattening filter remain

MLC