Method and apparatus of three dimension electrocardiographic imaging
OwnerBin Heinventor
Life of this patent
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Abstract
An instrument and method for imaging and localizing of electrical activities in a biological system, comprising a plurality of sensors for detecting signals over a part of a surface of the biological system, a data acquisition unit for collecting the signals, a positioning device for determining positions of the sensors, a procedure for determining geometry information of the biological system, an electrical source model incorporating physical and physiological properties of the biological system, an estimator for determining the parameters of the electrical source model, and a unit for displaying the reconstructed excitation sequence and/or electrical source distribution in the three dimension space of the biological system and over time.
Claims20
A method of imaging of electrical activities in a heart within a body comprising the steps of:
- (a) collecting signals over a part of a surface of the body, a part of the surface of the heart within the body, or a part of a surface out of the body, using a plurality of sensors and a data acquisition unit,
- (b) determining positions of the sensors,
- (c) determining geometry information of the heart within the body and of the torso,
- (d) constructing an electrical source model of the heart, which comprises a three dimension distribution of current dipoles or monopoles or electric potentials, or a computer heart model incorporating physiological a priori information that simulates the physiological and pathophysiological processes of the heart;
- (e) estimating activation patterns of the electrical activity within the three dimension space of the heart, by comparing and minimizing the difference between the collected signals and source model generated signals over the same sensor positions and over a certain time epoch, and
- (f) displaying the estimated activation patterns within the three dimension space of the heart.
An apparatus for imaging of electrical activities of a heart within a body, comprising a plurality of sensors for detecting signals over a part of a surface of the body, a part of the surface of the heart within the body, or a part of a surface out of the body, means for collecting the detected signals, means for determining positions of the sensors, means for determining geometry information of the heart within the body and of the torso, means for constructing an electrical source model of the heart, which comprises a three dimension distribution of current dipoles or monopoles or electric potentials, or a computer heart model incorporating physiological a priori information that simulates the physiological and pathophysiological processes of the heart, means for estimating activation patterns within the three dimension volume of the heart, by comparing and minimizing the difference between the detected signals and source model generated signals over the same sensor positions over a certain time epoch, and means for displaying the estimated activation patterns within the three dimension volume of the heart.
A method of imaging of electrical activities in a system comprising the steps of:
- (a) collecting signals over a part of a surface of the system or over a part of a surface out of the system using a plurality of sensors and a data acquisition unit,
- (b) determining positions of the sensors,
- (c) determining geometry information of the system,
- (d) constructing an electrical source model of the system,
- (e) estimating electrical source distribution and excitation sequence within the three dimension space of the system, by comparing and minimizing the difference between the collected signals and source model generated signals over the same sensor positions and over a certain time epoch, and
- (f) displaying the estimated electrical source distribution and excitation sequence within the three dimension space of the system.
An apparatus for imaging of electrical activities in a three dimensional biological system, comprising a plurality of sensors for detecting signals over a part of a surface of the biological system or over a part of a surface out of the biological system, means for collecting the detected signals, means for determining positions of the sensors, means for determining geometry information of the system, means for constructing an electrical source model of the system, means for estimating electrical source distribution and excitation sequence within the system, by comparing and minimizing the difference between the detected signals and source model generated signals over the same sensor positions over a certain time epoch, and means for displaying the estimated electrical source distribution and excitation sequence within the three dimension space of the system.
Dependencies are inferred from the claim text.