IMRT plans typically involve steep dose gradients near critical structures, such as the spinal cord. For optimal setup accuracy, a custom immobilization device is constructed at the time of CT simulation. All immobilization is firmly registered to Exact Couch* table tops on the CT scanner and linacs.

For head and neck patients, we immobilize using lightcast straps, a custom baseplate, and commercially-available head holders.

Time to construct: 30 min

*Varian Medical Systems

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