Quantification of arterial elasticity and its dependency to age is considered in this paper. We use radiofrequency (RF) signals from carotid artery ultasonography to evaluate this dependency. Blood pressure, blood flow, and tethering to surrounding tissue are the main causes of the motion of the carotid wall. Tracking carotid artery wall motion from a series of ultrasound B-mode images is chall...

Tracking accumulation and mobilisation behaviour of pipe wall material layers shows the Variable Condition Discolouration Model (VCDM) capable simulating long term hydraulic induced discolouration in drinking water distribution systems.

We have applied particle tracking techniques to obtain spatially resolved velocity measurements in electrokinetic flow devices. Both micrometer-resolution particle image velocimetry (micro-PMV) and particle tracking velocimetry (PTV) techniques have been used to quantify and study flow phenomena in electrokinetic systems applicable to microfluidic bioanalytical devices. To make the flow measure...

UNLABELLED SummaryWe present the case of a 26-year-old male with acute tonsillitis who was referred for coronary angiography because of chest pain, elevated cardiac biomarkers, and biphasic T waves. The patient had no cardiovascular risk factors. Echocardiography showed no wall motion abnormalities and no pericardial effusion. 2D speckle tracking revealed distinct decreased regional peak longit...

Three-dimensional (3-D) speckle tracking echocardiography allows us to track a change in regional endocardial surface area. The change of regional area during a cardiac cycle should be useful for assessing left ventricular regional work. We investigated the feasibility of assessing regional work, calculated as the area within the wall tension-regional area (T-A) loop using 3-D echocardiography....

OBJECTIVE To evaluate fetal myocardial movement by using newly developed ultrasonic technique. METHODS We analyzed 50 normal fetuses between 25 and 41 weeks' gestation for changes in thickness of fetal myocardium using the phased-tracking method, a technique with high vertical distance resolution and the potential to evaluate fine ventricular wall movements. We analyzed differences in the rat...

Background Left ventricular (LV) circumferential strain shows cardiac dysfunction earlier than ejection fraction. However, measuring right ventricle strain is technically challenging due to the thin RV wall and complex morphology. Also, the predominant RV strain is longitudinal, whereas the predominant LV strain is circumferential. We recently validated a feature tracking algorithm for evaluati...

In this paper, we present a cooperative multi-person tracking system between external fixed-view wall mounted cameras and a mobile robot. The proposed system fuses visual detections from the external cameras and laser based detections from a mobile robot, in a centralized manner, employing a “tracking-by-detection” approach within a Particle Filtering scheme. The enhanced multi-person tracker’s...

assessment of ventricular function in patients with heart failure symptoms. Recent advancements in echocardiography permit measurement of myocar­ dial mechanics through the use of strain imaging. Current techniques are either Doppler based or rely on speckle tracking in two dimensions, but each has limitations. Accordingly, three­dimensional wall motion tracking (3D­WMT) offers rapid acqui ­ si...