Surgery – Diagnostic testing – Detecting nuclear – electromagnetic – or ultrasonic radiation
Patent
1999-02-22
2000-08-22
Jaworski, Francis J.
Surgery
Diagnostic testing
Detecting nuclear, electromagnetic, or ultrasonic radiation
A61B 800
Patent
active
061064645
ABSTRACT:
An A-mode ultrasound transducer is tracked in three-dimensions by an optical position tracking system as the transducer is scanned over the skin to generate measurements of bone surface distance from the transducer. A processor correlates the ultrasound data with position and orientation data to generate a three-dimensional physical space model of the bone surface which is registered with an image space model of the bone surface generated from a tomographic image to produce an alignment of the two models. The ultrasound transducer is replaced by an instrument which is also optically tracked. The alignment is used to translate instrument position in physical space to a position in image space for generation on a monitor of a composite display of the instrument and the tomographic image. This composite display can be used to guide positioning and orienting the instrument in physical space with respect to sites of interest observed in the tomographic image on the display.
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Bass Wayne A.
Galloway, Jr. Robert L.
Maciunas Robert J.
Maurer, Jr. Calvin R.
Jaworski Francis J.
Vanderbilt University
Westerhoff Richard V.
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