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Abstract #0891

Optical Motion Tracking With Two Markers for Robust Prospective Motion Correction

Aditya Singh 1 , Benjamin Zahneisen 1 , Brian Keating 1 , Michael Herbst 2 , Maxim Zaitsev 2 , and Thomas Ernst 1

1 JABSOM, University of Hawaii, Honolulu, Hawaii, United States, 2 University Medical Center Freiburg, Freiburg, Germany

Prospective motion correction (PMC) using camera-based tracking of a skin-attached marker may suffer from problems such as loss of marker visibility and false tracking signals due to squinting or twitching. We introduce a PMC system that is capable of mitigating these problems by simultaneously tracking two markers placed on the object to be imaged. Experiments demonstrate improved image quality during obstruction of the line-of-sight and when a subject squints. The techniques developed can be applied to any optical tracking system and can be adapted to the use of more than two markers.

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