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Intrafraction motion
•
AccuForm head cushion (Civco) and BlueBag
indexed body immobilization system
(Medical Intelligence) and Precise Bite
mouthpiece (Civco), 121 pats
•
Mean 3D intrafraction motion (mm,
°
):
immob 1: 1.1 (
±
1.2) and 0.54
°
immob 2: 1.1 (
±
1.1) and 0.48
°
immob 3: 0.7 (
±
0.9) and 0.47
°
immob 4: 0.7 (
±
0.8) and 0.41
°
•
Rotations: 1
°
to 1.4
°
(1D, 1 SD)
•
Intra fraction: 3 and 4 better than 1 and 2
Tryggestad, IJROBP 80, 2011 P281