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Table 1 IMRT optimization objectives for OTP planning system

From: Distinct effects of rectum delineation methods in 3D-confromal vs. IMRT treatment planning of prostate cancer

Organs-at-risk
  Full Volume Dose (Gy) Max. Dose (Gy) Over Dose Volume (%) Limit Dose (Gy)
Bladder 23 50 23 75
Right femoral head 27 41 9 50
Left femoral head 27 41 9 50
Rectum 23 50 21 73
Target volumes
  Min. Dose (Gy) Prescription Dose (Gy) Under Dose (%) Limit Dose (Gy)
PTV 1 68 73 5 81
PTV 2 61 66 5 81
  1. The nomenclature of the OTP TPS was used for description of dose volume objectives: For organs-at-risk: the minimum dose should be lower than "full volume dose"; "maximum dose" and "over dose volume" defines one DVH objective; "limit dose" is the maximum dose;
  2. For targets: "Under dose (%)" is the volume (%) that is allowed receiving less than the prescription dose; "limit dose" is the maximum dose;