Title :
Time of flight technique used for measuring position and orientation of laparoscopic surgery tools
Author :
Tatar, F. ; Mollinger, J.R. ; Bastemeijer, J. ; Bossche, A.
Author_Institution :
Delft Univ. of Technol., Netherlands
Abstract :
An ultrasound wireless positioning system is developed to localize the laparoscopic instruments inside the patient´s body. The cross correlation method applied for measuring time of flight of ultrasound bursts yields 1 mm resolution in determining the instrument position. The 90° or respectively 180° phase-shift is introduced after the first half of the ultrasound burst.
Keywords :
biomedical ultrasonics; biosensors; position measurement; surgery; ultrasonic transducers; cross correlation method; laparoscopic surgery tools; orientation measurement; patient body; position measurement; time of flight technique; ultrasound bursts; ultrasound wireless positioning system; Instruments; Minimally invasive surgery; Position measurement; Radio frequency; Radio transmitters; Signal processing; Switches; Time measurement; Ultrasonic imaging; Ultrasonic variables measurement;
Conference_Titel :
Sensors, 2004. Proceedings of IEEE
Print_ISBN :
0-7803-8692-2
DOI :
10.1109/ICSENS.2004.1426467
