Research Article

Improved Surface-Based Registration of CT and Intraoperative 3D Ultrasound of Bones

Figure 1

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.
(a)
(b)
(c)