A bending energy model for measurement of cardiac shape deformity

Author

Duncan, James S. ; Lee, Forrester A. ; Smeulders, Arnold W M ; Zaret, Barry L.

Author_Institution

Yale Univ., New Haven, CT, USA

Volume

10

Issue

3

fYear

1991

fDate

9/1/1991 12:00:00 AM

Firstpage

307

Lastpage

320

Abstract

An approach to analyzing and quantifying the shape characteristics of the endocardial contour of the left ventricle of the heart is described. The computation begins by finding the local curvature differences between the contour under consideration and the mean normal contour at each of 100 equidistant points. The weighted square of these differences, summed over a set of points, is shown to be the regional or, global bending energy required to deform the mean normal contour to the characteristic shape of the analyzed contour. Resampling, smoothing and curvature computation issues are considered for the image-derived digital contours that are used in the analysis. Experiments were performed on artificial contour data and data derived from contrast ventriculographic (CV) studies of humans. It is also shown that the method has been adapted to measure endocardial shape form equilibrium radionuclide angiocardiography

Keywords

biomechanics; cardiology; physiological models; bending energy model; cardiac shape deformity measurement; contrast ventriculography; curvature computation; endocardial contour characteristics; equidistant points; equilibrium radionuclide angiocardiography; global bending energy; heart; image-derived digital contours; left ventricle; regional bending energy; resampling; smoothing; weighted square; Biomedical imaging; Computed tomography; Deformable models; Energy measurement; Heart; Humans; Image analysis; Magnetic resonance imaging; Medical diagnostic imaging; Shape measurement;

fLanguage

English

Journal_Title

Medical Imaging, IEEE Transactions on

Publisher

ieee

ISSN

0278-0062

Type

jour

DOI

10.1109/42.97580

Filename

97580