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. 2012 May 5;17(3):134–140. doi: 10.1016/j.rpor.2012.03.003

Table 1.

Prescription doses for planning target volumes and acceptable doses for organs at risk.

Structure Prescription
Prostate (PTV2) Prescribed dose 78 Gy = mean dose for PTV2
Minimally 95% of the prescribed dose (i.e. 74.1 Gy) to 95% of the PTV2
Maximal dose ≤107% of the prescribed dose (i.e. 83.5 Gy)



Seminal vesicles (PTV1–2) Prescribed dose 72.15 Gy
Minimally 95% of the prescribed dose (i.e. 68.5 Gy) to 95% of the PTV1–2
Maximal dose ≤107% of the prescribed dose (i.e. 77.2 Gy)



Rectum Maximally 50% can receive 50 Gy
Maximally 25% can receive 70 Gy
Maximally 15% can receive 75 Gy and maximally 15 cm3 can receive 75 Gy
Maximum dose 78 Gy



Bladder Maximally 30% can receive 70 Gy
Maximally 15% can receive 75 Gy and maximally 15 cm3 can receive 75 Gy
Maximum dose 78 Gy