Treatment dose planning parameters for 37.5 Gy in 5 fractions
URETHRA
The PTV will be treated with the prescribed dose of 37.5 Gy in 5 fractions. The volume of the PTV receiving the Prescription Dose (VPrescription Dose) of 37.5 Gy should be ≥ 95% and not exceed 125% (hotspot). The urethra should be expanded with a 3 mm planning organs-at-risk volume (PRV) and should not receive more than a point dose of 110% of the prescription dose of 37.5 Gy (see Additional file 