Skip to main content

Table 1 Clinical Dosimetric Constraints used in Planning

From: A dosimetric comparison of 3D conformal vs intensity modulated vs volumetric arc radiation therapy for muscle invasive bladder cancer

  3D-CRT/IMRT/VMAT
PTV D2% ≥ 60.8Gy
  D98% ≤ 68.5Gy
  Median absorbed dose (D50%) to be ±2% of 64Gy in 32 fractions of 2Gy each
Bladder V15 ≤ 80%
  V25 ≤ 75%
  V35 ≤ 70%
  V50 ≤ 65%
Rectum D50 ≤ 50Gy
  D40 ≤ 64Gy
  V50 < 50%,
  V60 < 35%,
  V65 < 25%,
  V70 < 20%,
  V75 <15%
Rt Fem Head and Lt Fem Head D100 ≤ 35Gy
  D60 ≤ 45Gy
  D10 ≤ 50Gy
Small bowel (non rectal) V15Gy ≤ 350cc
  V30Gy ≤ 150cc
  V35Gy ≤ 120cc
  V45Gy ≤ 50 cc
  V50Gy = 0 cc