Background: The non-Doppler echocardiographic technique known as two-dimensional speckle tracking echocardiography (2D-STE) has been demonstrated to help assess dyssynchrony and allow quantification of cardiac deformity timing in 2D greyscale images. This study evaluated the role accessory pathway (AP) localization compared electrophysiology (EPS) gold standard technique. Methods: was performed...

BACKGROUND Associated tricuspid annuloplasty is recommended during left-heart valve surgery when the tricuspid annulus (TA) is dilated but methodology for the measurement of TA size and thresholds for TA enlargement are not clearly defined. METHODS AND RESULTS Measurement of the TA diameter (TAD) was prospectively performed using 2-dimensional transthoracic echocardiography (2D-TTE) in 282 pa...

BACKGROUND Mutated transthyretin-associated (ATTRm) amyloidosis with heart failure is associated with decreased longitudinal left ventricular (LV) myocardial contraction, as measured by strain Doppler echocardiography. We sought to clarify whether speckle-tracking echocardiography (STE) would provide useful information in patients with ATTRm cardiac amyloidosis. METHODS One hundred twenty-thr...

Myocardial contrast echocardiography (MCE) and two-dimensional speckle tracking (2D-STE) were used to detect left ventricular myocardial microcirculation perfusion systolic function in dilated cardiomyopathy (DCM) explore the relationship between two.

Background—Variations in longitudinal deformation of the left ventricle (LV) have been suggested to be useful for differentiating chronic constrictive pericarditis (CP) and restrictive cardiomyopathy (RCM). We assessed LV mechanics derived from cardiac magnetic resonance (CMR) cine–based and two-dimensional (2D) echocardiography-based tissue-tracking to determine inter-modality consistency of d...

OBJECTIVE Speckle tracking echocardiography (STE) enables global and regional evaluation of the left ventricle (LV); therefore, it is the most useful method for detecting subclinical dysfunction in patients exposed to cardiotoxic agents. A novel technique triplane (3P) echocardiography also allows single beat assessment of LV global longitudinal strain values. We firstly aimed to demonstrate bo...

OBJECTIVES The study assessed whether hemodynamic parameters of left atrial (LA) systolic function could be estimated noninvasively using Doppler echocardiography. BACKGROUND Left atrial systolic function is an important aspect of cardiac function. Doppler echocardiography can measure changes in LA volume, but has not been shown to relate to hemodynamic parameters such as the maximal value of...

OBJECTIVES This study was done to ascertain whether three-dimensional echocardiography can facilitate the diagnosis of mitral valve abnormalities. BACKGROUND The value of the additional information provided by three-dimensional echocardiography compared with two-dimensional multiplane transesophageal echocardiography for evaluation of the mitral valve apparatus has not been assessed. METHOD...

The accurate non-invasive quantification of cardiac flow volumes is an important goal in clinical cardiology. Computation of laminar volume flow through the ventricular outflow tracts would allow direct measurement of stroke volume and cardiac output. Grading of valvar regurgitation and follow up of patients with regurgitant lesions may be more accurately performed through calculation of regurg...

BACKGROUND Clinical applicability of conventional ultrasonographic systems using mechanical adapters for 3D echocardiographic imaging has been limited by long acquisition and processing times. We developed a rapid (6-s) acquisition technique that collects apical tomograms using a continuously internally rotating transthoracic transducer. This study was performed to examine the clinical feasibil...