System and methods for noninvasive electrocardiographic imaging (ECGI) using generalized minimum residual (GMRes)
AssigneeCase Western Reserve University
InventorsYoram Rudy, Charulatha Ramanathan, Raja Ghanem, Ping Jia
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Abstract
Methods and systems for computing epicardial surface electric potentials based on measured body surface electric potentials, where the methods and systems include representing at least one geometric relationship between at least one body surface electric potential measuring system and the epicardial surface as a multidimensional matrix, estimating an inverse of the multidimensional matrix based on a Generalized Minimum Residual (GMRes) method, and, based on the inverse matrix and the measured body surface potentials, determining the epicardial surface electric potentials.
Claims21
A method for computing epicardial surface electric potentials based on measured body surface electric potentials, the method comprising:
- representing at least one geometric relationship between at least one body surface electric potential measuring system and the epicardial surface, as a multidimensional matrix,
- using a Generalized Minimum Residual (GMRes) method to estimate an inverse of the multidimensional matrix, and,
- based on the inverse matrix and the measured body surface potentials, determining the epicardial surface electric potentials.
A method for computing electric potentials on an epicardial surface of a patient, the method comprising:
- measuring electric potentials on the patient's body surface,
- expressing a geometrical relationship between the patient's body surface and the epicardial surface as a multi-dimensional matrix,
- determining an approximation of the two-dimensional matrix based on a Generalized Minimum Residual (GMRes) method, and,
- computing the electric potentials on the epicardial surface based on the approximated inverse and the measured electric potentials.
Dependencies are inferred from the claim text.