Salvage Moderate Hypofractionated Versus Ultrahypofractionated Radiotherapy for Biochemical Recurrence After Radical Prostatectomy in Prostate Cancer

Moderate hypofractionated radiotherapy (Moderate-hypoRT): 60 Gy in 24 fractions, delivered once daily, 5 days per week (on weekdays), over a total of 5-6 weeks. Ultra-hypofractionated radiotherapy (Ultra-hypoRT): 31 Gy in 5 fractions, delivered every other day (2-3 fractions per week), over a total of 2 weeks.