Abstract

This paper presents a robotic system capable of using three-dimensional ultrasound to guide a surgical instrument to a tracked target location. Tracking of both the surgical instrument and target was done using image based algorithms on the real-time 3D ultrasound data. The tracking techniques are shown to be especially amenable for execution on powerful graphics processor units. By harnessing a graphics card, it was possible to detect both a surgical instrument and a surgical target at a rate of 25 Hz. The high update rate permits the use of tracked instrument and target locations for controlling a robot. Validation of the system was done in a water tank, where the robot moved the instrument to the target site with a mean error of 1.2 mm

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