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Abstract #4340

Calibration and quality assurance for optical prospective motion correction using active markers

Julian Maclaren 1 , Melvyn B. Ooi 1 , Murat Aksoy 1 , Jakob Ehrl 1 , and Roland Bammer 1

1 Dept. of Radiology, Stanford University, Stanford, CA, United States

In this work, we present a fast means to calibrate an optical tracking system used for prospective motion correction. A calibration tool comprising wireless active markers and an optical marker is used to simultaneously measure motion in both coordinate systems. A hand-eye calibration, often used in robotics, is then applied to compute the required coordinate transformation. Other quality assurance information, such as optical system latency, accuracy and precision can be derived from the same data.

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