CROSS-CORRELATION METHOD APPLIED TO AN ULTRASOUND SYSTEM FOR MEASURING POSITION AND ORIENTATION OF LAPAROSCOPIC SURGERY TOOLS

F. Tatar, J.R. Mollinger, P. Turmezei, A. Bossche

Abstract

A new ultrasound wireless positioning system is developed that gives the surgeon the exact location and orientation of the instruments in the patient. The measuring system employ ultrasound markers placed on the instruments, outside of the human body. Knowing the dimensions of the usually rigid instruments it is possible to calculate their position and orientation inside the patient from the markers’ positions. Using the cross-correlation method we obtained a resolution of 0.7 mm in determining the marker positions.<br /> To eliminate wiring to the tools a wireless radio wave (RF) system is used to trigger the ultrasound sensors.

Keywords

ultrasound, 3D-detection, cross-correlation

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PWC-2003-TC10-023.pdf

DOI

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IMEKO TC

TC10 - Measurement for Diagnostics, Optimization and Control

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