Method and system to automatically assign map points to anatomical segments and determine mechanical activation time
First Claim
1. A method for determining mechanical activation times (MATs) associated with map points of a heart, the method comprising:
- utilizing one or more processors to perform the following operations;
obtaining a region of interest (ROI) data set comprising a plurality of point specific (PS) motion data representative of wall motion at select map points,selecting a current map point from the select map points and a corresponding collection of PS motion data for the current map point, the collection of PS motion data comprising a set of directional motion components indicative of wall motion along at least first and second directions at the current map point;
analyzing a component preference characteristic (CPC) of the set of directional motion components for the current map point, wherein the CPC is at least one of i) a time characteristic that is to be identified from the collection of PS motion data, ii) a location characteristic indicating a wall segment in which the current map point is located, and/or iii) a quality characteristic indicating a clarity of a characteristic of interest in motion waveforms;
identifying the wall motion as predominately along the first or second directions based on the CPC of the set of directional motion components for the current map point;
designating, by a mapping tool, a first directional motion component from the set of directional motion components based on identifying that wall motion is predominately along the first direction, wherein the designating comprises selecting between the first directional motion component and a second directional motion component; and
determining a MAT for the current map point of the heart based on the first designated directional motion component.
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Abstract
A method and system are provided for assigning map points to anatomical segments of a heart. The method and system utilize an intravascular mapping tool configured to be inserted into at least one of the endocardial or epicardial space. The mapping tool is maneuvered to select locations proximate to surfaces of the heart, while collecting map points at the select locations to form a ROI data set. The method and system store the ROI data set in a data storage and defines apical, basal and circumferential landmarks within the ROI data set. The method and system automatically calculate circumferential and longitudinal segment boundaries, associated with wall segments of the heart, based on the apical, basal and circumferential landmarks. The method and system automatically assign segment identifiers (IDs) to the map points based on locations of the map points relative to the circumferential and longitudinal boundaries, the segment IDs associated with wall segments of the heart.
53 Citations
24 Claims
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1. A method for determining mechanical activation times (MATs) associated with map points of a heart, the method comprising:
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utilizing one or more processors to perform the following operations; obtaining a region of interest (ROI) data set comprising a plurality of point specific (PS) motion data representative of wall motion at select map points, selecting a current map point from the select map points and a corresponding collection of PS motion data for the current map point, the collection of PS motion data comprising a set of directional motion components indicative of wall motion along at least first and second directions at the current map point; analyzing a component preference characteristic (CPC) of the set of directional motion components for the current map point, wherein the CPC is at least one of i) a time characteristic that is to be identified from the collection of PS motion data, ii) a location characteristic indicating a wall segment in which the current map point is located, and/or iii) a quality characteristic indicating a clarity of a characteristic of interest in motion waveforms; identifying the wall motion as predominately along the first or second directions based on the CPC of the set of directional motion components for the current map point; designating, by a mapping tool, a first directional motion component from the set of directional motion components based on identifying that wall motion is predominately along the first direction, wherein the designating comprises selecting between the first directional motion component and a second directional motion component; and determining a MAT for the current map point of the heart based on the first designated directional motion component. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for determining mechanical activation times (MATs) associated with map points of a heart, the system comprising an intravascular mapping tool comprising:
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a data storage configured to store a region of interest (ROI) data set comprising a plurality of point specific (PS) motion data representative of motion at select map points proximate to the heart, a collection of the PS motion data comprising a set of directional motion components indicative of motion along at least corresponding first and second directions at a current map point from the select map points; and a processor configured to; select the current map point from the select map points; analyze a component preference characteristic (CPC) of the set of directional motion components for the current map point, wherein the CPC is at least one of i) a time characteristic that is to be identified from the collection of PS motion data, ii) a location characteristic indicating a wall segment in which the current map point is located, and/or iii) a quality characteristic indicating a clarity of a characteristic of interest in motion waveforms; identify the wall motion as predominately along the first or second directions based on the CPC of the set of directional motion components for the current map point; designate a first directional motion component from the set of directional motion components based on identifying that wall motion is predominately along the first direction, wherein the designate operation comprises selecting between the first directional motion component and a second directional motion component; and determine a MAT for the current map point of the heart based on the first designated directional motion component. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification