Load Independence of Two-Dimensional Speckle-Tracking–Derived Left Ventricular Twist and Apex-to-Base Rotation Delay in Nonischemic Dilated Cardiomyopathy: Implications for Left Ventricular Dyssynchrony Assessment

2012 ◽  
Vol 25 (6) ◽  
pp. 652-660 ◽  
Author(s):  
Hyung-Kwan Kim ◽  
Sung-A. Chang ◽  
Hyo-Suk Ahn ◽  
Dong-Ho Shin ◽  
Ji-Hyun Kim ◽  
...  
Keyword(s):  
Dilated Cardiomyopathy ◽  
Speckle Tracking ◽  
Left Ventricular ◽  
Left Ventricular Dyssynchrony ◽  
Two Dimensional ◽  
Ventricular Dyssynchrony ◽  
Left Ventricular Twist ◽  
Nonischemic Dilated Cardiomyopathy ◽  
Ventricular Twist

Age-related Changes in Left Ventricular Twist Assessed by Two-dimensional Speckle-tracking Imaging

2006 ◽  
Vol 19 (9) ◽  
pp. 1077-1084 ◽  
Author(s):  
Masaaki Takeuchi ◽  
Hiromi Nakai ◽  
Michiko Kokumai ◽  
Tomoko Nishikage ◽  
Shinichiro Otani ◽  
...  
Keyword(s):  
Speckle Tracking ◽  
Left Ventricular ◽  
Two Dimensional ◽  
Speckle Tracking Imaging ◽  
Age Related ◽  
Left Ventricular Twist ◽  
Ventricular Twist ◽  
Age Related Changes

Comparison of strain and dyssynchrony measurements in fetal two-dimensional speckle tracking echocardiography using Philips and TomTec

2020 ◽  
Vol 48 (3) ◽  
pp. 266-273
Author(s):  
Helen Ann Köster ◽  
Kerstin Hammer ◽  
Janina Braun ◽  
Kathrin Oelmeier de Murcia ◽  
Mareike Möllers ◽  
...  
Keyword(s):  
Speckle Tracking ◽  
Longitudinal Strain ◽  
Speckle Tracking Echocardiography ◽  
Left Ventricular ◽  
Left Ventricular Dyssynchrony ◽  
Two Dimensional ◽  
Medical Systems ◽  
Ventricular Dyssynchrony ◽  
Chamber View ◽  
2D Speckle Tracking

AbstractBackgroundThe aim of this study was to compare Philips and TomTec two-dimensional speckle tracking echocardiography (2D-STE) software measurements of strain and dyssynchrony values in healthy fetuses.MethodsThis was an explorative observational study in which the echocardiographic data of 93 healthy fetuses between the 20th and 38th week of gestation were determined from a four-chamber view using 2D speckle tracking. The global and segmental longitudinal strain values of both ventricles, inter-ventricular and left intra-ventricular dyssynchrony were analyzed using QLab version 10.8 (Philips Medical Systems, Andover, MA, USA) and TomTec-Arena version 2.30 (TomTec, Unterschleißheim, Germany).ResultsTomTec showed persistently lower values for all of the assessed strain and dyssynchrony variables. For all variables, the bias between vendors tended to increase with gestational age, though not to a significant extent. Left ventricular dyssynchrony and longitudinal strain within the mid segment of the septum correlated best between vendors; however, the limits of agreement were wide in both cases. None of the variables assessed in the two-chamber view compared well between QLAB and TomTec.ConclusionSpeckle tracking software cannot be used interchangeably between vendors. Further investigations are necessary to standardize fetal 2D-STE.

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