Vascular imaging with color and power Doppler is a useful tool in the assessment of various
disease processes. Assessment of blood flow, from infarction and ischemia to hyperemia, in …

Objective: Recent advances in ultrasound Doppler imaging have made it possible to
visualize small vessels with diameters near the imaging resolution limits using …

Combinations of novel pulse-echo acquisitions and clutter filtering techniques can improve
the sensitivity and the specificity of power Doppler (PD) images, thus reducing the need for …

The very high frame rate afforded by ultrafast ultrasound, combined with microbubble
contrast agents, opens new opportunities for imaging tissue microvasculature. However …

Singular value decomposition (SVD) is a valuable factorization technique used in clutter
rejection filtering for power Doppler imaging. Conventionally, SVD is applied to a Casorati …

Thermal noise and acoustic clutter signals degrade ultrasonic image quality and contribute
to unreliable clinical assessment. When both noise and clutter are prevalent, it is difficult to …

Effective tissue clutter filtering is critical for non-contrast ultrasound imaging of slow blood
flow in small vessels. Independent component analysis (ICA) has been considered by other …

Reliable assessment of small vessel blood flow in the thyroid, without using any contrast
agents, can be challenging because of increased physiological motion resulting from its …

Using ultrasound to image small vessels in the neonatal brain can be difficult in the
presence of strong clutter from the surrounding tissue and with a neonate motion during the …

Acoustic clutter is a primary source of image degradation in ultrasound imaging. In the
context of flow imaging, tissue and acoustic clutter signals are often much larger in …