Physiologically based nonlinear segmentation of LV borders

Author

Sitomer, J. ; LeFree, M.T. ; DeBoe, S.F. ; Simon, S.B. ; Anselmo, E.G. ; Williamson, P.R. ; Kalbfleisch, S.J. ; Mancini, G.B.J.

Author_Institution

Michigan Univ., Veterans Adm. Med. Centers, Ann Arbor, MI, USA

fYear

1988

fDate

25-28 Sep 1988

Firstpage

281

Lastpage

284

Abstract

Left-ventricular wall motion is measured as the directional displacement of points spaced along the end-diastolic (ED) and end-diastolic (ES) borders. A mapping of uniformly spaced points along both borders does not reflect the actual motion that isolated myocytes in normal and abnormal segments undergo. In order to account for regional differences in segment shortening, the authors developed a method for assigning the spacing of ES points relative to equally spaced ED points. The method, which is based on local changes in ED and ES border curvatures, was used to calculate both regional wall motion and segment shortening. Tested on a database of 149 ventricles of differing states of normalcy and abnormalcy, both motion and shortening parameters proved statistically significant in separating patient groups. The authors conclude that changes in region ventricular shape can provide physiologically relevant information on regional wall motion and segmental shortening

Keywords

biomechanics; cardiology; abnormalcy; database; isolated myocytes; let-ventricular wall motion; nonlinear segmentation; normalcy; patient groups separation; region ventricular shape; regional wall motion; segment shortening; uniformly spaced points mapping; Data analysis; Databases; Equations; Interpolation; Motion analysis; Motion measurement; Noise measurement; Tiles; Valves;

fLanguage

English

Publisher

ieee

Conference_Titel

Computers in Cardiology, 1988. Proceedings.

Conference_Location

Washington, DC

Print_ISBN

0-8186-1949-X

Type

conf

DOI

10.1109/CIC.1988.72617

Filename

72617