Figure 1.
Juxtaposed schedules of conventionally fractionated radiation therapy and hypofractionated radiation therapy.
Currently, most men who receive external beam radiation therapy for prostate cancer are treated with conventionally fractionated radiation therapy, which is typically defined as a single 1.8-2.0 Gy fraction lasting one hour per day, five days per week, for about eight weeks to a total dose of 76-80 Gy. A hypofractionated schedule differs in that it is a single 2.1-3.5 Gy fraction lasting one hour per day, five days per week, for about four weeks.