Role of temporal resolution in selection of the appropriate strain technique for evaluation of subclinical myocardial dysfunction

Negishi, Kazuaki, Negishi, Tomoko, Agler, Deborah A., Plana, Juan Carlos and Marwick, Thomas H. (2012) Role of temporal resolution in selection of the appropriate strain technique for evaluation of subclinical myocardial dysfunction. Echocardiography, 29 3: 334-339. doi:10.1111/j.1540-8175.2011.01586.x


Author Negishi, Kazuaki
Negishi, Tomoko
Agler, Deborah A.
Plana, Juan Carlos
Marwick, Thomas H.
Title Role of temporal resolution in selection of the appropriate strain technique for evaluation of subclinical myocardial dysfunction
Journal name Echocardiography   Check publisher's open access policy
ISSN 0742-2822
1540-8175
Publication date 2012-03-01
Sub-type Article (original research)
DOI 10.1111/j.1540-8175.2011.01586.x
Volume 29
Issue 3
Start page 334
End page 339
Total pages 7
Place of publication Hoboken, NJ, United States
Publisher Wiley-Blackwell Publishing
Collection year 2013
Language eng
Formatted abstract
Objective:
To assess the effects of frame and volume rate on the concordance between two-dimensional speckle tracking strain (2DS) and three-dimensional speckle tracking strain (3DS), and between 2DS and triplane imaging of speckle tracking (Tri-P).

Methods:
Global longitudinal strains (GLSs) derived from 2DS, 3DS, and Tri-P were compared among 142 prospectively recruited patients who underwent evaluation of subclinical left ventricle (LV) function.

Results:
Feasibility to obtain GLS of 3DS was significantly higher than that of Tri-P (76% vs. 47%, P < 0.001). The correlation between 2DS and 3DS was only modest (r = 0.47) whereas that of 2DS and Tri-P was better (r = 0.67). The difference in frame/volume rate between two methods also affected their correlation. A volume rate between 34 and 50 volumes/sec had the highest correlation between 2DS and 3DS (r = 0.72). The correlation between 2DS and Tri-P was better with a difference in frame-rate ≤20 per second than with a difference >20 per second. Likewise, there was a better correlation between 2DS and 3DS when the difference between 2D frame rate and 3D volume rate was ≤40 per second, compared to when it was >40 per second. These associations differed from segment to segment and the apical segments had the highest correlation and the basal the lowest.

Conclusions:

The feasibility of each means of strain calculation showed important differences, with 2DS being the most attainable. Strain values were not interchangeable among 2DS, Tri-P, and 3DS. Importantly, poor correlations seemed to be driven by differences in acquisition rate. Currently, 2DS offers the most robust measurement of subclinical myocardial dysfunction.
Keyword Two-dimensional speckle strain
Triplane strain
Three-dimensional speckle tracking
Frame rate
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Non HERDC
School of Medicine Publications
 
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Created: Fri, 06 Jul 2012, 20:55:27 EST by Matthew Lamb on behalf of School of Medicine