Results 31 to 40 of about 132,248 (302)

Rheo-acoustic gels: Tuning mechanical and flow properties of colloidal gels with ultrasonic vibrations

, 2020
Colloidal gels, where nanoscale particles aggregate into an elastic yet fragile network, are at the heart of materials that combine specific optical, electrical and mechanical properties. Tailoring the viscoelastic features of colloidal gels in real-time
Ahouré, L. Christian, Dagès, Noémie, Gibaud, Thomas, Hengl, Nicolas, Jung, Guillaume, Lidon, Pierre, Manneville, Sébastien, Pignon, Frédéric, Poulesquen, Arnaud, Sztucki, Michael   +9 more
core   +3 more sources

Design and Fabrication of Double-Focused Ultrasound Transducers to Achieve Tight Focusing

Sensors, 2016
Beauty treatment for skin requires a high-intensity focused ultrasound (HIFU) transducer to generate coagulative necrosis in a small focal volume (e.g., 1 mm3) placed at a shallow depth (3–4.5 mm from the skin surface).
Jihun Jang, Jin Ho Chang
doaj   +1 more source

Ultrasound Hypotension Protocol Time-motion Study Using the Multifrequency Single Transducer Versus a Multiple Transducer Ultrasound Device

Western Journal of Emergency Medicine, 2021
Introduction: Ultrasound hypotension protocols (UHP) involve imaging multiple body areas, each with different transducers and imaging presets. The time for task switching between presets and transducers to perform an UHP has not been previously studied ...
Linda Sabbadini, Rocco Germano, Emily Hopkins, Jason S. Haukoos, John L. Kendall   +4 more
doaj   +1 more source

Simulating Patho-realistic Ultrasound Images using Deep Generative Networks with Adversarial Learning

, 2018
Ultrasound imaging makes use of backscattering of waves during their interaction with scatterers present in biological tissues. Simulation of synthetic ultrasound images is a challenging problem on account of inability to accurately model various factors
Sheet, Debdoot, Tom, Francis
core   +1 more source

Progress Towards a Multi-Modal Capsule Endoscopy Device Featuring Microultrasound Imaging [PDF]

, 2016
Current clinical standards for endoscopy in the gastrointestinal (GI) tract combine high definition optics and ultrasound imaging to view the lumen superficially and through its thickness.
Al-Rawhani, M., Beeley, J., Cochran, S., Cox, B.F., Cumming, D., Cummins, G., Demore, C.E.M., Desmulliez, M.P.Y., Lay, H.S., McPhillips, R., Poltarjonoks, R., Qiu, Y., Seetohul, V., Trolier-McKinstry, S., Wallace, M.   +14 more
core   +2 more sources

A 35 MHz/105 MHz Dual-Element Focused Transducer for Intravascular Ultrasound Tissue Imaging Using the Third Harmonic

Sensors, 2018
The superharmonic imaging of tissue has the potential for high spatial and contrast resolutions, compared to the fundamental and second harmonic imaging.
Junsu Lee, Ju-Young Moon, Jin Ho Chang
doaj   +1 more source

The Fabrication and Integration of a 15 MHz Array Within a Biopsy Needle [PDF]

, 2017
It is proposed that integrating ultrasound transducer arrays at the tip of tools such as biopsy needles could enable valuable, real-time image feedback during interventional procedures.
Cochran, Sandy, Demore, Christine, Desmulliez, Marc P.Y., Gao, Jun, McPhillips, Rachael, Vinnicombe, Sarah, Watson, David   +6 more
core   +4 more sources

Lorentz Force Electrical Impedance Tomography

, 2013
This article describes a method called Lorentz Force Electrical Impedance Tomography. The electrical conductivity of biological tissues can be measured through their sonication in a magnetic field: the vibration of the tissues inside the field induces an
Chapelon, Jean-Yves, Grasland-Mongrain, Pol, Lafon, Cyril, Mari, Jean-Martial   +3 more
core   +2 more sources

Acoustical structured illumination for super-resolution ultrasound imaging. [PDF]

, 2018
Structured illumination microscopy is an optical method to increase the spatial resolution of wide-field fluorescence imaging beyond the diffraction limit by applying a spatially structured illumination light.
Ferrara, Katherine W, Fite, Brett Z, Foiret, Josquin, Ilovitsh, Asaf, Ilovitsh, Tali   +4 more
core   +3 more sources

Transcranial Magnetic Resonance Imaging-Guided Focused Ultrasound Treatment at 1.5 T: A Retrospective Study on Treatment- and Patient-Related Parameters Obtained From 52 Procedures [PDF]

, 2020
Objective: To present a retrospective analysis of patient- and sonication-related parameters of a group of patients treated with a transcranial magnetic resonance imaging (MRI)-guided focused ultrasound (tcMRgFUS) system integrated with a 1.5-T MRI unit.
Bartolotta TV, Borgese RF, Cannella R, Catalano C, Collura G, D’Amelio M, D’Angelo C, Gagliardo C, Iacopino G, Lagalla R, Marrale M, Midiri M, Napoli A   +12 more
core   +1 more source