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Table 2 Radiotherapy structure volumes (n=22)

From: Low rate of lymphedema after extended pelvic lymphadenectomy followed by pelvic irradiation of node-positive prostate cancer

Structure/Volume Mean volume (cm3) Range (cm3)
PTV T 158 83-272
(prostate/vesicles a )   
PTV N 711 161-1361
(pelvic nodes b )   
Treated volume c 1349 520-2107
Irradiated volume d 5832 3630-10810
  1. aVesicles included in PTV T in 7 (32%) patients.
  2. bDefined according to RTOG in 18 (82%) patients.
  3. cThe volume of the body treated to a dose ≥ 47.5 Gy (95% of the prescribed dose).
  4. dThe volume of the body treated to a dose ≥ 25 Gy (50% of the prescribed dose).