Document Detail

Velocity tracking--a novel method for quantitative analysis of longitudinal myocardial function.
MedLine Citation:
PMID:  17617311     Owner:  NLM     Status:  MEDLINE    
Doppler tissue imaging is a method for quantitative analysis of longitudinal myocardial velocity. Commercially available ultrasound systems can only present velocity information using a color Doppler-based overlapping continuous color scale. The analysis is time-consuming and does not allow for simultaneous analysis in different projections. We have developed a new method, velocity tracking, using a stepwise color coding of the regional longitudinal myocardial velocity. The velocity data from 3 apical projections are presented as static and dynamic bull's-eye plots to give a 3-dimensional understanding of the function of the left ventricle. The static bull's-eye plot can display peak systolic velocity, late diastolic tissue velocity, or the sum of peak systolic velocity and early diastolic tissue velocity. Conversely, the dynamic bull's-eye plot displays how the myocardial velocities change over one heart cycle. Velocity tracking allows for a fast, simple, and intuitive visual analysis of the regional longitudinal contraction pattern of the left ventricle with a great potential to identify characteristic pathologic patterns.
Anna Bjällmark; Matilda Larsson; Reidar Winter; Carl Westholm; Per Jacobsen; Britta Lind; Lars-Ake Brodin
Publication Detail:
Type:  Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography     Volume:  20     ISSN:  1097-6795     ISO Abbreviation:  J Am Soc Echocardiogr     Publication Date:  2007 Jul 
Date Detail:
Created Date:  2007-07-09     Completed Date:  2007-08-07     Revised Date:  2007-11-02    
Medline Journal Info:
Nlm Unique ID:  8801388     Medline TA:  J Am Soc Echocardiogr     Country:  United States    
Other Details:
Languages:  eng     Pagination:  847-56     Citation Subset:  IM    
School for Technique and Health, Royal Institute of Technology, Huddinge, Sweden.
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MeSH Terms
Aged, 80 and over
Echocardiography, Doppler, Color / methods*
Image Enhancement / methods*
Image Interpretation, Computer-Assisted / methods*
Middle Aged
Reproducibility of Results
Sensitivity and Specificity
Ventricular Dysfunction, Left / ultrasonography*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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