Flipping Book - IMRT

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IMRT vs VMAT vs TOMO: organs at risk

Bertelsen

Acta Oncol

2012

15 pts

IMRT VMAT Difference

V5% 51.8 (34.1-70) 50.3 (27.6-71.5) 1.5;

p=0.3

V20% 21.6 (9-28) 20.4 (7-27) 1.3;

p=0.01

MLD 13.1 (7-18) 12.8 (6-18) 0.3; p=0.1

NTCP 5.7 (3-8) 5.4 (2-8) 0.3;

p=0.01

Only modest differences

Quan

IJRBOP

2012

16 pts

VMAT vs IMRT:

Lower MLD 8%

Lower Mean Heart Dose 17%

Lower esophagous V70 24%