Model-based correction of position measurements

Details Model-based correction of position measurements Model-based correction of position measurements

A - Human Necessities

61

B

A61B 5/06 (2006.01) A61B 19/00 (2006.01) A61M 25/095 (2006.01)

Patent

CA 2591016

Visualization of a probe when impedance-based measurement technology is being used is improved by stabilizing a dis-played image of the probe or catheter. Using a model of rea-sonable probe shapes and a matching algorithm, an erroneous probe image is adjusted so that it assumes a realistic shape on a display. A range of positional variations is also incor-porated in the model. When an apparent probe position exceeds a permissible range of motion, the probe image is constrained to a realistic position.

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