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. Author manuscript; available in PMC: 2021 Jan 1.
Published in final edited form as: Med Phys. 2019 Nov 19;47(1):64–74. doi: 10.1002/mp.13769

FIG. 4.

FIG. 4.

Active motion tracking breath-hold computed tomography (CT) acquisition setup: a camera is attached to the CT couch, pointed at the tracking box on the patient’s abdomen. The patient wears goggles that display their breathing cycle with the targeted breath-hold level. The images are acquired when the patient is holding his breath at the gating level.