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Proceedings Paper

3D localizer for ultrasound endoscope by an outside-body marker
Author(s): Shinichi Tamura; Xin Chen; Jiang Kai; Hiroaki Naito; Hiroshi Otawa; Hideo Kawai; Yoshinobu Sato
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Paper Abstract

In this paper, we describe a method which we can identify 3D position and direction of ultrasound scanning probe inserted into inside of the body, which gives endoscopic images. We use marker transducers placed on surface of the body, which transmit pulses synchronized to the ultrasound scanner. The method of measuring position (direction and distance between scanning probe inside of body and transducer outside of body) of marker on the scanned image obtained with ultrasound endoscope by using adaptive threshold and robust algorithm is described. This system can be extended to for body-inside navigation by localizing body-outside transducers and visualizing the position and trace of the body-inside ultrasound probe. The final goal of the system is to reduce the x-ray dose in the endoscopic examination and to give direct 3D localization instead of the conventional 2D x-ray fluoroscopy.

Paper Details

Date Published: 14 November 1997
PDF: 11 pages
Proc. SPIE 3241, Smart Materials, Structures, and Integrated Systems, (14 November 1997); doi: 10.1117/12.293489
Show Author Affiliations
Shinichi Tamura, Osaka Univ. (Japan)
Xin Chen, Osaka Univ. Medical School (Japan)
Jiang Kai, Osaka Univ. Medical School (Japan)
Hiroaki Naito, Osaka Univ. Medical School (Japan)
Hiroshi Otawa, Osaka Univ. Medical School (Japan)
Hideo Kawai, Osaka Electro-Communication Univ. (Japan)
Yoshinobu Sato, Osaka Univ. Medical School (Japan)

Published in SPIE Proceedings Vol. 3241:
Smart Materials, Structures, and Integrated Systems
Alex Hariz; Vijay K. Varadan; Olaf Reinhold, Editor(s)

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