Paper Info
Title
3D left ventricular strain by phase unwrapping: a simulated annealing based branch-cut placement method
Abstract
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. In 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 on simulated annealing with a new cost function based on 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 comparing them to strains estimated by a previously published feature based technique and a previously published unwrapped-phase technique with manual branch cut placement.
Year
DOI
Venue
2009
10.1109/ISBI.2009.5193085
ISBI
Keywords
Field
DocType
branch-cut placement method,manual branch cut placement,temporal phase consistency,entire lv,phase inconsistency,harmonic phase,manually-placed branch cut,phase unwrapping,harp image,simulated annealing,imaged time frame,automated method,branch cut,ventricular strain,computational modeling,magnetic resonance imaging,strain,biomechanics,cost function,cardiology,magnetic resonance image
Simulated annealing,Computer vision,Time frame,Computer science,Harmonic,HARP,Artificial intelligence,Feature based,Cardiac magnetic resonance imaging,Magnetic resonance imaging
Conference
Citations 
PageRank 
References 
0
0.34
4
Authors
5
Name
Order
Citations
PageRank
Bharath Ambale110.75
Thomas S. Denney Jr.2379.17
Himanshu Gupta32653277.86
Steven Lloyd482.00
Louis Dell'Italia540.75