Dosimetry and Physics Quality Assurance

Careful attention to detail for radiation treatment planning and quality assurance is paramount to achieve best results from treatment. Reproducible patient setup, thin-sliced quality imaging during simulation preferably utilizing 4D CT or fluoroscopy for motion evaluation, motion management and image-guidance during treatment delivery, adherence to standardized treatment volume definitions, and attention to published dose-volume limits are all important components in radiation treatment planning and delivery. Prospective peer-review and quality assurance also have been shown to improve radiation therapy for patients. This chapter outlines key considerations for quality assurance programs for 3D CRT, IMRT/VMAT, SBRT, and Proton Therapy.