Background A vortex is a rotational fluid structure formed by shearing of fluid layers. It forms
during diastole in the left ventricle (LV) and helps redirect flow to the LV outflow tract for …

Background High-frame rate blood speckle tracking (BST) echocardiography is a new
technique for the assessment of intracardiac flow. The purpose of this study was to evaluate …

Objectives The aims of this study were to assess the vortex characteristics of left ventricle
(LV) in fetuses with coarctation of the aorta (CoA) using high–frame rate ultrasound with …

Background This study aims to understand the age‐related changes in vortex formation time
(VFT) index in children, and thus, describe the ranges of VFT in different pediatric age …

Background Vortex formation time (VFT) had been considered a useful marker for assessing
diastolic performance. the VFT assessment of diastolic function using four-dimensional (4D) …

Left ventricular vortex formation optimizes the effective transport of blood volume while
minimizing energy loss (EL). Vector flow mapping (VFM)-derived EL patterns have not been …

Background Studies on myocardial characteristics examined by speckle-tracking
echocardiography are limited. Aims To compare myocardial performance between the right …

Objectives Blood‐flow pattern is an essential factor in cardiovascular development.
Recently, blood speckle‐tracking echocardiography (BST) based on high‐frame‐rate …

Background Quantitative evaluation of right ventricular myocardial performance in preterm
infants remains a challenge because of the limitations of conventional echocardiographic …

Aims Previous reports have demonstrated that myocardial velocities are not sufficiently
sensitive in foetal heart studies. Strain (S) imaging is a new non-invasive ultrasonic …