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Abstract #0674

Markerless optical head tracking system using facial features

Toru Sasaki1, Ryuichi Nanaumi1, Mitsuo Nishimura1, Kazuhiko Fukutani1, Shuichi Kobayashi1, Kazuya Okamoto2, Hiroshi Kusahara2, and Kazuto Nakabayashi2
1Medical Products Technology Development Center, R&D Headquarters, Canon Inc., Tokyo, Japan, 2Advanced MRI Development PJ Team, Canon Medical Systems Corp., Kanagawa, Japan

We have developed a markerless tracking system enabling to estimate head pose through limited apertures of a head coil. The system, composed of a mirror and four MR compatible cameras, tracks the patient's facial features. The patient’s face image through the head coil’s apertures is monitored during scanning. To demonstrate its feasibility for tracking, a volunteer was moving his head arbitrarily inside a scanner. Despite the limited apertures of the head coil, the facial features were successfully tracked.

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