Document Detail


Pulsed-wave tissue Doppler and color tissue Doppler echocardiography: calibration with M-mode, agreement, and reproducibility in a clinical setting.
MedLine Citation:
PMID:  19594813     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: Myocardial velocities can be measured with both pulsed-wave tissue Doppler (PWTD) and color tissue Doppler (CTD) echocardiography. We aimed to (A) to explore which of the two methods better approximates true tissue motion and (B) to examine the agreement and the reproducibility of the two methods in a routine clinical setting. METHODS: For Study A, the displacements of 63 basal myocardial segments from 13 patients were examined with M-mode and compared with the velocity-time integral of PWTD and CTD velocities. For Study B, the basal lateral segments from 58 patients were examined with PWTD and CTD, and the peak myocardial velocities during systole (Sm), early diastole (Em), and late diastole (Am) were measured. RESULTS: Study A: CTD-based measurements of displacement were 12% lower than M-mode measurements (95% CI: -18%; -6%). PWTD velocity-time integrals measured at the outer edge of the spectral band were 40% higher (33%; 46%) than M-mode measurements. Study B: PWTD measurements of myocardial velocity were systematically higher than CTD measurements: Sm 7.51 versus 5.54, difference 1.97 +/- 1.41 cm/sec; Em 8.74 versus 6.86, difference 1.88 +/- 1.70 cm/sec; Am 7.46 versus 5.17, difference 2.29 +/- 1.82 cm/sec; P < 0.001 for all. Intraobserver coefficient of variation for Sm, Em, and Am were 6%, 12%, and 12% for PWTD, 14%, 13%, and 20% for CTD. CONCLUSIONS: CTD measures numerically smaller tissue velocities than PWTD, mostly due to an overestimation of true tissue motion by PWTD. The methods have good agreement and comparable reproducibility.
Authors:
Niels Thue Olsen; Christian Jons; Thomas Fritz-Hansen; Rasmus Mogelvang; Peter Sogaard
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Echocardiography (Mount Kisco, N.Y.)     Volume:  26     ISSN:  1540-8175     ISO Abbreviation:  Echocardiography     Publication Date:  2009 Jul 
Date Detail:
Created Date:  2009-07-14     Completed Date:  2009-09-30     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8511187     Medline TA:  Echocardiography     Country:  United States    
Other Details:
Languages:  eng     Pagination:  638-44     Citation Subset:  IM    
Affiliation:
Department of Cardiology, Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark. thueolsen@post.tele.dk
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MeSH Terms
Descriptor/Qualifier:
Aged
Calibration
Denmark
Echocardiography, Doppler, Color / methods*,  standards
Echocardiography, Doppler, Pulsed / methods*,  standards
Elasticity Imaging Techniques / methods*,  standards
Female
Humans
Male
Myocardial Infarction / complications,  ultrasonography*
Reproducibility of Results
Sensitivity and Specificity
Ventricular Dysfunction, Left / complications,  ultrasonography*

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


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