71 articles
Transthoracic echocardiography
Transthoracic echocardiography (TTE) is the most widely used imaging test in cardiology, an ultrasound of the heart performed through the chest wall to assess heart function, chambers, and valves.
UDFF study
A UDFF study evaluates ultrasound-derived fat fraction, a quantitative ultrasound technique combining attenuation and backscatter coefficients to estimate liver fat as a percentage, usually against MRI-PDFF.
Ultrafast ultrasound imaging
Ultrafast ultrasound imaging is an ultrasound method that forms each frame with one unfocused transmission instead of line-by-line scanning, reaching 1,000 to 20,000 frames per second and enabling shear wave tracking and functional brain imaging.
Ultrasonic imaging
Ultrasonic imaging, or sonography, is a diagnostic method that images internal body structures in real time using high-frequency sound pulses and their echoes.
Ultrasonography
Ultrasonography, also called sonography, is a portable, radiation-free imaging method using high-frequency sound waves to visualize internal organs and tissues, guide procedures, and diagnose conditions at the bedside.
Ultrasound elastography
Ultrasound elastography is an imaging technique that measures the stiffness of soft tissue noninvasively, most often to stage liver fibrosis without biopsy and to characterize breast and thyroid lesions.
Ultrasound localization microscopy
Ultrasound localization microscopy (ULM) is a super-resolution medical ultrasound technique that localizes individual microbubble contrast agents to map microvasculature and blood flow, overcoming the resolution-penetration trade-off at centimeter depths.
Ultrasound microvessel imaging
Ultrasound microvessel imaging (UMI) is a family of ultrasound techniques that visualize blood flow in small vessels beyond conventional Doppler, including superb microvascular imaging and ultrasound localization microscopy.
Ultrasound molecular imaging
Ultrasound molecular imaging (USMI) is an imaging technique that uses ligand-bearing gas microbubbles, 1–10 µm across, to visualize molecular markers on vascular endothelium noninvasively and in real time.
Vector flow imaging
Vector flow imaging (VFI) is an ultrasound method that measures the full velocity of blood flow, both speed and direction, without angle correction, unlike conventional color Doppler.
Vector flow mapping
Vector flow mapping is an echocardiographic method that reconstructs two-dimensional intracardiac blood flow velocity vectors from standard color Doppler images, quantifying hemodynamics such as energy loss, vorticity, and relative pressure.