Patient and probe tracking during freehand ultrasound

TitlePatient and probe tracking during freehand ultrasound
Publication TypeJournal Article
Year of Publication2004
AuthorsFlaccavento, G., P. Lawrence, and R. Rohling
Secondary AuthorsBarillot, C., D. R. Haynor, and P. Hellier
JournalMedical Image Computing and Computer-Assisted Intervention - MICCAI 2004, PT 2, Proceedings

We present a system that measures the probe location with respect to the patient's body during an ultrasound exam. The system uses an inexpensive trinocular camera to track patches of points on a surface. The accuracy of the digital camera system is measured, using the Optotrak as a reference, and is less than +/-2 mm for a 20 x 20 mm patch. Fiducials, which can be seen in both the ultrasound images and the camera images, are used for a consistency test producing values with a standard deviation under 3.2 mm.

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