Improved Surface-Based Registration of CT and Intraoperative 3D Ultrasound of Bones
Polyvinyl alcohol (PVA) phantom used in this study. (a) PVA phantom with the tracking tool attached. (b) Three orthogonal views from a 3D ultrasound volume of the phantom acquired, with the 3D freehand ultrasound technique. (c) Three orthogonal views from the CT volume of the phantom.
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