ESTRO course on Image Guided Radiotherapy in Clinical Practice 2018

QA of treatment delivery for

free-breathing treatment: fluoro /markers

Rankin IJROBP 2016

• Extracted fiducial motion

from 3D CBCT

• Lateral + AP fluoroscopy

(15 sec)

• Good agreement

• Cases of large deviation

between 4D CT and

fluoro/CBCT

• If time > 7.5 min,

intrafraction imaging

recommended