3D LEFT VENTRICULAR STRAIN BY PHASE UNWRAPPING: A SIMULATED ANNEALING BASED BRANCH-CUT PLACEMENT METHOD

被引：2

作者：

Ambale, Bharath ^{[1
]}

Denney, Thomas S., Jr. ^{[1
]}

Gupta, Himanshu ^{[2
]}

Lloyd, Steven ^{[2
]}

Dell'Italia, Louis ^{[2
]}

机构：

[1] Auburn Univ, ECE Dept, Auburn, AL 36849 USA

[2] Univ Alabama Birmingham, Div Cardiovasc Dis, Birmingham, AL 35294 USA

来源：

2009 IEEE INTERNATIONAL SYMPOSIUM ON BIOMEDICAL IMAGING: FROM NANO TO MACRO, VOLS 1 AND 2 | 2009年

关键词：

Phase unwrapping; tagged magnetic resonance imaging; strain; left ventricle; MOTION; TRACKING; RECONSTRUCTION;

D O I：

10.1109/ISBI.2009.5193085

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

This paper presents an automated method for measuring 3D left ventricular (LV) strain in each imaged time frame from phase unwrapped harmonic phase (HARP) images derived from tagged cardiac magnetic resonance imaging. hi previous work, manually placed branch cuts were used to resolve phase inconsistencies in HARP images before they were unwrapped. This paper presents an automated method for placing branch cuts in short axis images based oil simulated annealing with a new cost function based oil temporal phase consistency This method significantly reduces the amount of user interaction needed to compute 3D strain maps in the entire LV in each imaged time frame. The unwrapped phase derived strains were validated on a set of 40 human studies by computing them to strains estimated by a previously published feature based technique and a previously published unwrapped-phase technique with manual branch cut placement.

引用

页码：466 / +

页数：2

共 12 条

[1]

AMBALE B, 2008, BIOMEDICAL IMAGING N, P1433

[2] Reconstruction of 3-D left ventricular motion from planar tagged cardiac MR images: An estimation theoretic approach [J].