Eric J. Vandervoort, PhD

To reduce the frequency of calibration and adjustment of Elekta linear accelerator components, including MLCs, jaws, mechanical isocenter, beam spot position, symmetry, and flatness.

To evaluate intrafraction motion during spine SBRT with different immobilization systems and determine whether less rigid systems can offer similar geometric accuracy to near-rigid systems such as the BodyFIX during FFF VMAT treatments.