Vector mapping of three-dimensionally reconstructed intrabody organs and method of display
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United States of America Patent
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Oct 9, 2001
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app pub date -
Jul 22, 1999
filing date -
Jul 24, 1998
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Abstract
A method of diagnosing an abnormal condition in a biological structure, such as the heart, including the steps of measuring a physiological response at at least three sampled points on a surface of the biological structure, calculating a vector function related to the response, displaying a representation of the vector function, and inferring the abnormal condition from the representation. The present invention is particularly useful for diagnosing cardiac arrhythmias, in which case the physiological response is a voltage, from which is inferred a local activation time and the vector function is a gradient of the local activation time, specifically, a conduction velocity.
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