New Universal Strain Software Accurately Assesses Cardiac Systolic and Diastolic Function Using Speckle Tracking Echocardiography

Kolias, Theodore J.; Hagan, Peter; Chetcuti, Stanley; D, Eberhart; Kline, Nicole M.; Lucas, Sean D.; Hamilton, James

doi:10.1111/echo.12512

Cited by 7 publications

(3 citation statements)

References 27 publications

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“…Using these four parameters, we also assigned a “DD score” based on each subject’s total number of abnormal parameters. DICOM files of echocardiogram images retrieved from the University of Michigan database archives were analyzed using vendor-independent speckle tracking software (EchoInsight, Epsilon Imaging Inc., Ann Arbor, MI, USA) (29). One cardiac cycle was selected for each of the apical 4- and 2-chamber views.…”

Section: Methodsmentioning

confidence: 99%

Reduced Myocardial Flow Reserve Is Associated With Diastolic Dysfunction and Decreased Left Atrial Strain in Patients With Normal Ejection Fraction and Epicardial Perfusion

Konerman

Greenberg

Kolias

et al. 2018

Journal of Cardiac Failure

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Section: Methodsmentioning

confidence: 99%

Reduced Myocardial Flow Reserve Is Associated With Diastolic Dysfunction and Decreased Left Atrial Strain in Patients With Normal Ejection Fraction and Epicardial Perfusion

Konerman

Greenberg

Kolias

et al. 2018

Journal of Cardiac Failure

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“…A simple though standard block-matching method is to compare the intensities of the pixels using the sum of absolute/squared differences measure [13]. Among a number of similarity criteria, the normalized cross-correlation was historically the first [7], and is still one of the most applied methods, in medical ultrasound imaging [14][15][16][17]. In the following, although different similarity criteria can be used, we thus focus on the normalized cross-correlation without loss of generality.…”

Section: Basic Principles Of Speckle Trackingmentioning

confidence: 99%

Introduction to speckle tracking in cardiac ultrasound imaging

2018

Handbook of Speckle Filtering and Tracking in Cardiovascular Ultrasound Imaging and Video

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In this chapter, we will first recall some basic principles of speckle tracking. The fundamentals of speckle tracking in a wider context are essentially described in Chapter 13. We will then treat speckle-tracking echocardiography and echocardiographic particle image velocimetry (echo-PIV) and indicate a number of clinical applications in the context of evaluation of cardiac function. We will then briefly introduce color Doppler approaches complementary to speckle tracking. We will finally present how speckle-tracking techniques could benefit from highframe-rate echocardiography (also called ''ultrafast echocardiography''). We will conclude with the expected contribution of high-frame-rate ultrasound for speckle tracking in three-dimensional (3-D) echocardiography.

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“…Finally, the speckle tracking software in our study uses a normalized cross-correlation method to process DICOM images. Although the strain estimation using the normalized cross-correlation method to process DI-COM images is compelling with the strain estimation using conventional strain software to process raw or RF data in cardiac strain imaging [26], it is worth comparing renal cortical strain estimation when using raw or RF data and DICOM images.…”

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confidence: 99%

Ultrasound Strain Relaxation Time Ratio: A Quantitative Marker for the Assessment of Cortical Inflammation/Edema in Renal Allografts

Gao¹,

Hentel²,

Kazam³

et al. 2015

Ultraschall in Med

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To evaluate the ability of ultrasound strain relaxation time ratio to assess cortical inflammation/edema in renal allografts. We prospectively assessed renal allograft cortical inflammation/edema in 16 renal transplants using ultrasound elasticity imaging and correlated the findings with kidney biopsy. Strain relaxation times in the renal cortex and reference soft tissue were produced by free-hand compression with the ultrasound transducer and estimated with 2 D speckle tracking. Compression was performed in 3-second compression-relaxation cycles (push for 1 second, constant pressure for 1 second, and release for 1 second). We propose a strain relaxation time ratio (time of cortical strain to return to zero/time of the reference strain return to zero) to assess the relationship of compression-induced time-dependent strain relaxation in the cortex and reference tissue. 16 patients were divided into a group with ≤ 25 % (n = 8) and a group with> 26 % (n = 8) cortical inflammation/edema based on the Banff score. A t-test was used to examine the difference in the strain relaxation time ratio between the two groups. The diagnostic accuracy, inter-rater reliability, and reproducibility of this technique in discriminating between the groups were tested. The strain relaxation time ratio of cortex/reference tissue was significantly higher in patients with> 26 % than in patients with ≤ 25 % cortical inflammation/edema (1.15 ± 0.10 vs. 0.91 ± 0.08, P = 0.0002). The strain relaxation time ratio has high reliability (Pearson correlation coefficient, R² = 0.93), reproducibility (intraclass correlation coefficient = 0.98, P = 0.000), and accuracy (area under curve = 1) in determining > 26 % renal cortical inflammation/edema. The strain relaxation time ratio of cortex/reference tissue can be used as a quantitative marker for the assessment of cortical inflammation/edema in renal allografts.

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New Universal Strain Software Accurately Assesses Cardiac Systolic and Diastolic Function Using Speckle Tracking Echocardiography

Abstract: Universal strain software can be used to accurately assess LV systolic and diastolic function using speckle tracking echocardiography.

Cited by 7 publications

References 27 publications

Reduced Myocardial Flow Reserve Is Associated With Diastolic Dysfunction and Decreased Left Atrial Strain in Patients With Normal Ejection Fraction and Epicardial Perfusion

Reduced Myocardial Flow Reserve Is Associated With Diastolic Dysfunction and Decreased Left Atrial Strain in Patients With Normal Ejection Fraction and Epicardial Perfusion

Introduction to speckle tracking in cardiac ultrasound imaging

Ultrasound Strain Relaxation Time Ratio: A Quantitative Marker for the Assessment of Cortical Inflammation/Edema in Renal Allografts

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