Determination of the coordinate transformation between an optical motion tracking system and a magnetic resonance imaging scanner
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United States of America Patent
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Sep 15, 2016
app pub date -
Dec 2, 2014
filing date -
Dec 2, 2013
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Abstract
Improved cross-calibration between magnetic resonance imaging (MRI) coordinates and optical tracking coordinates is provided. Initial calibration is performed with a calibration tool that includes wireless active markers that can be tracked using the MRI scanner, and an optical marker that can be tracked using the optical tracking system. Data from one or more poses of this tool are used to provide an initial cross-calibration. In use, this initial calibration is corrected to account for differences between actual camera position and the reference location. Here the reference location is the camera location at which the initial calibration was performed.
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