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Abstract #5026

Fast Cross-Calibration Between MR Scanner and Optical System for Prospective Motion Correction

Murat Aksoy1, Christoph Forman1, Matus Straka1, Samantha Jane Holdsworth1, Stefan Tor Skare1,2, Joachim Hornegger3, Roland Bammer1

1Department of Radiology, Stanford University, Stanford, CA, United States; 2Karolinska Institute, Stockholm, Sweden; 3Computer Science, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany

Optical systems have been proposed as a way to achieve rigid head motion correction with minimal changes to the pulse sequence. However, the usability of these systems in clinical practice have been limited mostly due to the tedious scanner-optical system cross-calibration routine that is required to link the frame of references of the optical system and the MR scanner. In this study, we propose a fast cross-calibration routine that is easy and takes only a couple of seconds. The variability of the scanner-camera cross calibration parameters with varying sequence parameters was investigated.