Figure 6.

Sagittal images of a patient example showing the SI-adapted motion shifting the inhale navigator channel on the image before calculating the AP patient specific motion. (a) and (c) show the navigator channel on the patient exhale sagittal image. (b) shows the initial position of the navigator channel on the inhale sagittal image. (c) shows the shifted position of the navigator channel on the inhale sagittal image. Note that the navigator channel on images (c) and (d) are on the same anatomic position of the liver, which will ensure accurate assessment of the motion at this position.