Three-Dimensional Speckle Tracking Echocardiography for Automatic Assessment of Global and Regional Left Ventricular Function Based on Area Strain

Abstract

Area strain represents a promising novel automatic index that may provide an accurate and reproducible alternative to current echocardiographic standards for quantitative assessment of global and regional LV function. Area strain seems to adequately identify regional wall motion abnormalities compared with the clinical standard of visual assessment by experienced echocardiographers.

Dynamic Left Ventricular Dyssynchrony Assessed on 3-Dimensional Speckle-Tracking Area Strain During Dobutamine Stress Has a Negative Impact on Cardiovascular Events in Patients With Idiopathic Dilated Cardiomyopathy

“…The novel 3-D speckle-tracking system can quantify the ratio of changes in the endocardial area (area strain), when coupled with the factors of both longitudinal and circumferential strain from all 16 standard LV segments. 20 Moreover, we recently expanded the applicability of 3-D area strain to the assessment of LV dyssynchrony. 21,28 More recently, we also reported the prognostic utility of contractile reserve assessed by means of 3-D global circumferential strain in patients with DCM, and that contractile reserve assessed on 3-D global circumferential strain was found to be a more robust prognostic parameter than that assessed using the 2-D method to predict adverse cardiovascular events.…”

“…given area from its original dimensions (Figure 1). 20 The software then automatically divides the LV into 16 standard segments and generates the corresponding 3-D area strain curves from each segment (Figure 1). The time-to-peak strain (Ts) was measured from the onset of the QRS complex to the peak area strain in each of the 16 LV segments 21 at rest and at peak stress.…”

A bal kamra korszerű echokardiográfiás vizsgálata – az M-módtól a 3D speckle-tracking képalkotásig

“…A strainparaméterek számí-tásával lehetőség nyílik a falmozgászavarok vizuális becslésében rejlő szubjektív megítélés minimalizálására. Kleijn és mtsai igazolták, hogy a 3DSTE során számított AS kvantitatív módon jellemzi a vizuális becsléssel igazolt BK-i falmozgászavarok meglétét [43]. Mindamellett az is igazolást nyert, hogy bizonyos paraméterek (például GLS) diagnosztikus erővel bírhatnak a myocardialis infarctus által érintett terület nagyságának diagnosztikájában [44].…”

Left ventricular rotational and strain analysis by three-dimensional speckle tracking echocardiography in cardiomyopathies

“…3DSTE is suitable for determining volumetric data as well as for quantitatively characterizing global and regional wall motions (6,58,(62)(63)(64). This method can be used to determine numeric strain parameters regarding the whole LV and to characterize contractionrelaxation of certain segments as demonstrated in the previous chapter (5.3) (6,(62)(63)(64).…”

“…This method can be used to determine numeric strain parameters regarding the whole LV and to characterize contractionrelaxation of certain segments as demonstrated in the previous chapter (5.3) (6,(62)(63)(64). In accordance with 3D movement-contraction of the LV, three different 'standard' strain parameters are differentiated: RS (radial shortening), LS (longitudinal shortening) and CS (cross-sectional shortening) (58).…”