US 2008/0077032 A1 · Methods for providing diagnostic information using endocardial surface data for a patient's heart

Abstract

Methods for providing diagnostic information using endocardial surface data for a patient's heart are described herein. In some embodiments, endocardial surface data for the left ventricle of a heart is received. The endocardial surface data represents the endocardial surface of the left ventricle at multiple times over a heartbeat and is obtained using a volumetric imaging application. A representation in prolate spheroidal coordinates of the endocardial surface of the left ventricle at least a portion of the multiple times is generated using the endocardial surface data. The prolate spheroidal coordinates include a longitudinal angular coordinate μ, a circumferential angular coordinate θ, and a coordinate λ as a function of longitudinal angular coordinate μ and circumferential angular coordinate θ. A measure that provides diagnostic information related to the left ventricle is computed based at least on part on the value of coordinate λ.

Claims28

Dependent claims

A method for providing diagnostic information using endocardial surface data for a patient's heart, the method comprising:

receiving endocardial surface data for the left ventricle of a heart, wherein the endocardial surface data represents the endocardial surface of the left ventricle at multiple times over a heartbeat, the multiple times comprising end diastole and end systole of the heartbeat, and wherein the endocardial surface data is obtained using a volumetric imaging application;
generating a representation in prolate spheroidal coordinates of the endocardial surface of the left ventricle at end diastole and end systole using the endocardial surface data, wherein the prolate spheroidal coordinates comprise a longitudinal angular coordinate μ, a circumferential angular coordinate θ, and a coordinate λ as a function of longitudinal angular coordinate μ and circumferential angular coordinate θ, and wherein λED represents the value of coordinate λ at end diastole and λES represents the value of coordinate λ at end systole;
and
computing three-dimensional fractional shortening (“3DFS”) of the left ventricle as 3DFS=(λED−λES)/λED, wherein the three-dimensional fractional shortening identifies an ischemic region of the left ventricle.

1 more element

A method for providing diagnostic information using endocardial surface data for a patient's heart, the method comprising:

receiving endocardial surface data for the left ventricle of a heart, wherein the endocardial surface data represents the endocardial surface of the left ventricle at multiple times over a heartbeat, and wherein the endocardial surface data is obtained using a volumetric imaging application;
generating a three-dimensional representation of the endocardial surface of the left ventricle at least a portion of the multiple times using the endocardial surface data, wherein the three-dimensional representation comprises a coordinate λ that identifies a position of the endocardial surface with respect to a central axis of the left ventricle;
and
computing a measure based at least in part on the value of coordinate λ at the at least a portion of the multiple times, wherein the measure provides diagnostic information related to the left ventricle.

1 more element

Dependencies are inferred from the claim text.

Methods for providing diagnostic information using endocardial surface data for a patient's heart

Life of this patent

Methods for providing diagnostic information using endocardial surface data for a patient's heart

Life of this patent

Abstract

Claims28