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IMPROVING IMPEDANCE-BASED POSITION TRACKING PERFORMANCE USING SCATTERED INTERPOLANT
IMPROVING IMPEDANCE-BASED POSITION TRACKING PERFORMANCE USING SCATTERED INTERPOLANT
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机译:使用分散的插值法改善基于阻抗的位置跟踪性能
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摘要
A method includes, receiving from a calibration probe multiple data points acquired in an organ of a patient, each data point including (i) a respective position of the calibration probe, and (ii) a respective set of electrical values indicative of respective impedances between the position and multiple electrodes attached externally to the patient. A mapping between sets of the electrical values and respective positions in the organ is constructed, by performing for each received data point: if the mapping already contains one or more existing data points in a predefined vicinity of the data point, the one or more existing data points are adjusted responsively to the received data point, and if the predefined vicinity does not contain any existing data points, the received data point is added to the mapping. A position of a medical probe is subsequently tracked in the organ using the mapping.
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