AROI-ESTRO GYN Teaching Course

Bowel Doses : 3DCRT vs. IMRT

Bowel Dose

IMRT

3DCRT

P value

V15 Small Bowel ≥ 275 cc

8 (13.1%)

25 (44.6%)

<0.0001

V40Small Bowel ≥ 150 cc

1 (1.6%)

26 (46.4%)

<0.0001

V15 Peritoneal Cavity ≥ 1200 cc

15 (24.5%)

24 (42.8%)

0.06

V40 Peritoneal Cavity ≥ 750 cc

1 (1.6%)

20 (35.7%)

<0.0001

IMRT led to significant reduction in Bowel and PC doses

S Chopra et al; ASTRO 2015