Automated left ventricular segmentation in cardiac MRI

Author

Pednekar, A. ; Kurkure, Uday ; Muthupillai, R. ; Flamm, S. ; Kakadiaris, Ioannis A.

Author_Institution

MR Clinical Sci. Group, Philips Med. Syst. North America, Bothell, WA, USA

Volume

53

Issue

7

fYear

2006

fDate

7/1/2006 12:00:00 AM

Firstpage

1425

Lastpage

1428

Abstract

We present an automated left ventricular (LV) myocardial boundary extraction method. Automatic localization of the LV is achieved using a motion map and an expectation maximization algorithm. The myocardial region is then segmented using an intensity-based fuzzy affinity map and the myocardial contours are extracted by cost minimization through a dynamic programming approach. The results from the automated algorithm compared against the experienced radiologists using Bland and Altman analysis were found to have consistent mean bias of 7% and limits of agreement comparable to the inter-observer variability inherent in the manual method.

Keywords

biomedical MRI; blood vessels; cardiovascular system; expectation-maximisation algorithm; fuzzy set theory; image segmentation; medical image processing; Altman analysis; Bland analysis; automated left ventricular segmentation; cardiac MRI; cost minimization; dynamic programming; expectation maximization algorithm; intensity-based fuzzy affinity map; interobserver variability; motion map; myocardial boundary extraction; myocardial contours; radiologists; Biomedical computing; Biomedical imaging; Computer science; Dynamic programming; Heart; Image segmentation; Magnetic resonance imaging; Myocardium; Radiology; Shape; Ejection fraction; fuzzy connectedness; image segmentation; left ventricle; Adult; Algorithms; Artificial Intelligence; Female; Humans; Image Enhancement; Image Interpretation, Computer-Assisted; Imaging, Three-Dimensional; Information Storage and Retrieval; Magnetic Resonance Imaging; Male; Middle Aged; Pattern Recognition, Automated; Reproducibility of Results; Sensitivity and Specificity; Stroke Volume; Ventricular Dysfunction, Left;

fLanguage

English

Journal_Title

Biomedical Engineering, IEEE Transactions on

Publisher

ieee

ISSN

0018-9294

Type

jour

DOI

10.1109/TBME.2006.873684

Filename

1643412