Dosimetric parameters predict short-term quality-of-life outcomes for patients receiving stereotactic body radiation therapy for prostate cancer

Patients with large prostate size or large volumes of rectum and bladder that receive ≥ 90% of the prescribed radiation dose are more susceptible to short-term QOL decrements after prostate SBRT. These volumes should be minimized to maximize recovery to baseline QOL after prostate SBRT.