Technology : Treatment Planning and Delivery : Multi-Leaf Colimator (MLC)

UAB uses a Millenium TLC Multi-Leaf Collimator (MLC) to shape radiation beams emitted from Varian linear accelerators. The shape of the beam is defined by the shape of the tumor being treated. The MLC uses 120 leaves to create precise and accurate beam shapes, which directs radiation to the target and limits exposure to healthy tissues.

For more information about the MLC’s used at UAB from the Varian Medical Systems, go to

All pictures Copyright 2007,
Varian Medical Systems, Inc.
All rights reserved.