The Ottawa Hospital Cancer Centre

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.

To quantify the dosimetric impact of transitioning from water-based TG-43 dose evaluations to advanced model-based TG-186 calculations in permanent prostate brachytherapy, and to assess the effects on target coverage, organ-at-risk doses, and the appropriaten...