Document Detail

Tissue Doppler and innovative myocardial-deformation imaging techniques for assessment of myocardial viability.
MedLine Citation:
PMID:  16900005     Owner:  NLM     Status:  MEDLINE    
PURPOSE OF REVIEW: Visual analysis of stress echocardiography allows evaluation of myocardial viability in acutely and chronically impaired left-ventricular function. Tissue Doppler and derived echocardiographic imaging techniques provide a tool for quantification of regional left-ventricular function which overcomes the limitations of subjective, experience-dependent reading of stress echocardiography. RECENT FINDINGS: Regional systolic and diastolic myocardial velocities as well as the derived myocardial-deformation parameters strain and strain rate are impaired in patients with left-ventricular dysfunction. Increase of myocardial velocities, strain and strain rate during stress stimulation are indicators of functional reserve in viable segments, while failure to increase indicates nonviability. Previous studies with very precise determination of regional myocardial deformation have shown that even analysis of resting function without evaluation of the functional reserve during stimulation allows assessment of myocardial viability. New two-dimensional echocardiography-based tissue-tracking techniques yield an angle-independent imaging modality that is likely to further improve the clinical applicability of echocardiographic imaging techniques to define regional myocardial viability. SUMMARY: This review attempts to define the role of tissue Doppler and new innovative myocardial-deformation imaging techniques for identification of myocardial viability in patients with impaired left-ventricular function.
Rainer Hoffmann
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Publication Detail:
Type:  Journal Article; Review    
Journal Detail:
Title:  Current opinion in cardiology     Volume:  21     ISSN:  0268-4705     ISO Abbreviation:  Curr. Opin. Cardiol.     Publication Date:  2006 Sep 
Date Detail:
Created Date:  2006-08-10     Completed Date:  2006-12-12     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8608087     Medline TA:  Curr Opin Cardiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  438-42     Citation Subset:  IM    
Medical Clinic I, University Hospital RWTH Aachen, Germany.
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MeSH Terms
Cardiomyopathies / pathology,  physiopathology,  ultrasonography
Echocardiography, Doppler / methods*
Heart / physiopathology*
Myocardium / pathology
Tissue Survival / physiology*
Ventricular Dysfunction, Left / pathology,  physiopathology,  ultrasonography

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