Development of a liver respiratory motion simulator to investigate magnetic tracking for abdominal interventions

Kevin Robert Cleary; Filip Banovac M.D.; Elliot Levy M.D.; Daigo Tanaka

doi:10.1117/12.466934

17 May 2002 Development of a liver respiratory motion simulator to investigate magnetic tracking for abdominal interventions

Kevin Robert Cleary, Filip Banovac M.D., Elliot Levy M.D., Daigo Tanaka

Author Affiliations +

Proceedings Volume 4681, Medical Imaging 2002: Visualization, Image-Guided Procedures, and Display; (2002) https://doi.org/10.1117/12.466934
Event: Medical Imaging 2002, 2002, San Diego, California, United States

Abstract

We have designed and constructed a liver respiratory motion simulator as a first step in demonstrating the feasibility of using a new magnetic tracking system to follow the movement of internal organs. The simulator consists of a dummy torso, a synthetic liver, a linear motion platform, a graphical user interface for image overlay, and a magnetic tracking system along with magnetically tracked instruments. While optical tracking systems are commonly used in commercial image-guided surgery systems for the brain and spine, they are limited to procedures in which a line of sight can be maintained between the tracking system and the instruments which are being tracked. Magnetic tracking systems have been proposed for image-guided surgery applications, but most currently available magnetically tracked sensors are too small to be embedded in the body. The magnetic tracking system employed here, the AURORA from Northern Digital, can use sensors as small as 0.9 mm in diameter by 8 mm in length. This makes it possible to embed these sensors in catheters and thin needles. The catheters can then be wedged in a vein in an internal organ of interest so that tracking the position of the catheter gives a good estimate of the position of the internal organ. Alternatively, a needle with an embedded sensor could be placed near the area of interest.

Citation Download Citation

Kevin Robert Cleary, Filip Banovac M.D., Elliot Levy M.D., and Daigo Tanaka "Development of a liver respiratory motion simulator to investigate magnetic tracking for abdominal interventions", Proc. SPIE 4681, Medical Imaging 2002: Visualization, Image-Guided Procedures, and Display, (17 May 2002); https://doi.org/10.1117/12.466934

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