Mitral Annular Velocities Generated by Speckle Tracking Imaging: Reproducibility and Correlation with Tissue Doppler Velocities

Kort, Smadar; Madahar, Purnema; Ajmera, Akash; Brown, David L.

doi:10.1111/j.1540-8175.2009.01104.x

Cited by 3 publications

(5 citation statements)

References 27 publications

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“…27 The relationship of mitral annulus velocities measured by TDI and STI have been compared and are related but not equivalent. 28 Septal and lateral mitral annulus TDI velocities of 8.3 (3) cmÁsec -1 and 11.0 (4.9) cmÁsec -1 , respectively, values in the normal range for the age group of that study, were found to correspond with STI velocities of 5.2 (1.8) cmÁsec -1 and 5.5 (2.1) cmÁsec -1 , respectively, which are similar to our results. The correlation of TDI and STI velocities was poor, (r = 0.4 and 0.3) for the septal wall and lateral walls, respectively.…”

Section: Discussionsupporting

confidence: 91%

Proximal aortic compliance and diastolic function assessed by speckle tracking imaging

Gregory

Dobson

2013

Can J Anesth/J Can Anesth

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Purpose Speckle tracking imaging (STI) is a recent technique that evaluates an echocardiographic image throughout the cardiac cycle and provides dynamic variables such as tissue velocities and strain rates. The objective of our study was to determine 1) if STI can be used to quantify proximal aortic compliance and 2) if decreased aortic compliance determined by STI will reproduce the previously reported correlation with diastolic function. Methods This was a retrospective observational case series using previously obtained intraoperative transesophageal images. Diastolic performance was quantified by STI-based longitudinal velocities of the basal-septal and basal-lateral walls of the left ventricle in early diastole (LV E 0 ). Change in proximal aortic volume was calculated using STI to measure peak longitudinal and radial velocities in early diastole. After normalizing for mean arterial pressure, compliance was calculated and then compared with basal-septal and basal-lateral LV E 0 using single regression analysis.Results Twenty patients were included in our analysis. Linear regression of basal-septal LV E 0 and basal-lateral LV E 0 vs proximal aortic compliance during diastole each resulted in an R 2 value of 0.26 (P \ 0.05). Conclusion Speckle tracking can be used to describe the physical motion of the aortic wall and to calculate its compliance. We confirm that variation in diastolic function can be attributed, in part, to aortic compliance. Our novel approach of measuring compliance throughout the cardiac cycle, isolating radial and longitudinal contributions, and evaluating previously obtained images retrospectively provides advantages over previously reported measures of aortic compliance. Speckle tracking promises new insights into ventricular function, aortic mechanics, and the interaction between these structures. RésuméObjectif L'imagerie de suivi de pixel, ou speckle tracking imaging (STI) en anglais, est une technique re´cente qui permet d'e´valuer une image e´chocardiographique tout au long du cycle cardiaque et d'obtenir des variables dynamiques telles que les ve´locite´s tissulaires et les vitesses de de´formation. L'objectif de notre e´tude e´tait de de´terminer si 1) la STI pouvait eˆtre utilise´e pour quantifier la compliance de l'aorte proximale, et si 2) une compliance aortique re´duite telle que de´termine´e par la STI reproduisait la corre´lation avec la fonction diastolique rapporte´e pre´ce´demment. Méthode Cette e´tude est une se´rie de cas observationnelle re´trospective se fondant sur des images transoesophagiennes perope´ratoires obtenues par le passe´. La performance diastolique a e´te´quantifie´e par les ve´locite´s longitudinales fonde´es sur la STI des parois basales septales et basales late´rales du ventricule gauche en de´but de diastole (LV E 0 ). Les changements de volume de l'aorte proximale ont e´teć alcule´s à l'aide de la STI afin de mesurer les ve´locite´s

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Section: Discussionsupporting

confidence: 91%

Proximal aortic compliance and diastolic function assessed by speckle tracking imaging

Gregory

Dobson

2013

Can J Anesth/J Can Anesth

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“…). Instead of just tracking and calculating the velocity of a region of interest in any direction, which the speckle tracking technique does by default, this method prevents misinterpretation of mitral annular motion caused by translational cardiac motion as described before . Reported global velocities were defined as the average from the 6 standard LV walls.…”

Section: Methodsmentioning

confidence: 99%

“…Instead of just tracking and calculating the velocity of a region of interest in any direction, which the speckle tracking technique does by default, this method prevents misinterpretation of mitral annular motion caused by translational cardiac motion as described before. 16,20 Reported global velocities were defined as the average from the 6 standard LV walls. Data were exported to a spreadsheet program (Excel, Microsoft Corporation, Redmond, WA, USA) and mitral annular velocity was calculated by dividing the difference in length by the difference in time (Fig.…”

Section: Speckle Tracking Analysismentioning

confidence: 99%

Diastolic Abnormalities in Normal Phenotype Hypertrophic Cardiomyopathy Gene Carriers: A Study Using Speckle Tracking Echocardiography

et al. 2012

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“…In contrast, Kort et al. observed a poor agreement between the measurements from the two methods with no derivable uniform numeric correction 32 . Therefore, further studies are still needed to validate E/E′ values derived from STE with traditional E/E′ ratio and with filling pressures obtained by invasive measurement.…”

Section: Discussionmentioning

confidence: 96%

“…7 In contrast, Kort et al observed a poor agreement between the measurements from the two methods with no derivable uniform numeric correction. 32 Therefore, further studies are still needed to validate E/E values derived from STE with traditional E/E ratio and with filling pressures obtained by invasive measurement. It is also important to note that E/E ratios derived from various vendors' STE software may yield different cutoff values and that warrant further validation.…”

Section: Discussionmentioning

confidence: 99%

Speckle Tracking–Derived Mitral Annular Velocities Predict Mortality in Patients with Acute Coronary Syndrome

et al. 2012

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Mitral Annular Velocities Generated by Speckle Tracking Imaging: Reproducibility and Correlation with Tissue Doppler Velocities

Abstract: E' by VVI is lower than by TDI with a poor agreement between the measurements, which are therefore not interchangeable. Although VVI can be performed offline, this method is dependent on image quality.

Cited by 3 publications

References 27 publications

Proximal aortic compliance and diastolic function assessed by speckle tracking imaging

Proximal aortic compliance and diastolic function assessed by speckle tracking imaging

Diastolic Abnormalities in Normal Phenotype Hypertrophic Cardiomyopathy Gene Carriers: A Study Using Speckle Tracking Echocardiography

Speckle Tracking–Derived Mitral Annular Velocities Predict Mortality in Patients with Acute Coronary Syndrome

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