2017_IGRT course book

Phase vs. Amplitude sorting

• Data is linearly divided over the respiratory cycle

• More frames in exhale than inhale

• If amplitude is irregular



slices do not concatenate

(blurring/distortions)



1 23 4 5 6 1 2 3 4 5 6

1 2 3 4 5 6

1 23 4 5 6 1 2 3 4 5 6

Phase

ESTRO IGRT 2017