2017_IGRT course book

Change in breathing amplitude

1.8

Oxygen Mask Normal

1.6

1.4

1.2

1

0.8

0.6

Breathing Amplitude [cm]

0.4

0.2

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0

Patient

M = 21%, SD = 19%, p = 0.00076

ESTRO IGRT 2017