Impedance based anatomy generation
First Claim
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1. A method comprising:
- inserting a catheter into a heart, the catheter comprising three or more electrodes;
causing the catheter to move to each of multiple, different positions in the heart;
for each of the multiple, different catheter positions, causing current flow between at least some of the electrodes and measuring electrical signals, from the current flow, at each of one or more of the electrodes; and
determining anatomical information about the heart based on positions of the electrodes and based on complex impedance information determined from the electrical signals measured at the different catheter positions.
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Abstract
Methods and systems for the determination and representation of anatomy anatomical information are disclosed herein.
165 Citations
20 Claims
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1. A method comprising:
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inserting a catheter into a heart, the catheter comprising three or more electrodes; causing the catheter to move to each of multiple, different positions in the heart; for each of the multiple, different catheter positions, causing current flow between at least some of the electrodes and measuring electrical signals, from the current flow, at each of one or more of the electrodes; and determining anatomical information about the heart based on positions of the electrodes and based on complex impedance information determined from the electrical signals measured at the different catheter positions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method comprising:
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inserting a catheter into a heart, the catheter comprising three or more electrodes; causing the catheter to move to each of multiple, different positions in the heart; for each of the multiple, different catheter positions, causing current flow between at least some of the electrodes and measuring electrical signals, from the current flow, at each of one or more of the electrodes; and determining anatomical information about the heart by detecting variations in complex impedance information determined from the electrical signals measured at the different catheter positions, the variations based on an inhomogeneous distribution of material due to anatomical features of the heart. - View Dependent Claims (10, 11, 12, 13)
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14. A system comprising:
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a catheter comprising multiple, spatially distributed electrodes including one or more electrodes configured to inject a current and to measure electrical signals in response to the injected current; a system configured to determine a position of the electrodes at multiple, different catheter positions; and a processing unit configured to determine anatomical information about the heart based on positions of the electrodes and based on complex impedance information determined from the electrical signals measured at the different catheter positions. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification