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Cardiac mapping with catheter shape information

  • US 8,948,853 B2
  • Filed: 03/10/2011
  • Issued: 02/03/2015
  • Est. Priority Date: 06/13/2006
  • Status: Active Grant
First Claim
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1. A method comprising:

  • processing information relating to characteristics of catheter shape;

    inserting a catheter into a heart cavity having an endocardium surface, the catheter comprising multiple, spatially distributed electrodes;

    moving the catheter to each of multiple, different positions in the heart cavity;

    for each of the different catheter positions, measuring signals at the catheter electrodes in response to electrical activity in the heart cavity;

    subsequent to processing the information relating to the characteristics of the catheter shape, determining physiological information at multiple locations of the endocardium surface based at least in part on the measured signals and the processed catheter shape information;

    using the determined physiological information to guide ablation of one or more selected regions of the heart;

    repeating the measurement of catheter electrode signals and the determination of the physiological information after the ablation treatment, anddisplaying a difference map comprising information about how the determined physiological information changed in response to the ablation treatment.

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