Results 31 to 40 of about 3,633,330 (258)

A Study on the Simulation of New Linear Transducer Based on the Ultrafast Ultrasonic Imaging Technology

open access: yesMATEC Web of Conferences, 2015
The ultrafast ultrasonic imaging technology based on the transmitting/receiving principle of plane wave has become a research hotspot in the ultrasonic field of international medicine.
Guoa Ning   +3 more
doaj   +1 more source

Gaussian Beam Migration for Free-Surface Multiples in VSP

open access: yesFrontiers in Earth Science, 2022
The vertical seismic profiling (VSP) Gaussian beam migration is a seismic imaging method with both computational efficiency and imaging precision. It can get high-resolution structural features near the well.
Dai Yu   +5 more
doaj   +1 more source

Deep tissue space-gated microscopy via acousto-optic interaction

open access: yesNature Communications, 2020
In ideal diffraction-limited optical microscopy imaging depth is limited by the multiply scattered wave. Here, the authors present a space gating method, based on an acoustic focus in the object plane and reconstruction using only the acousto-optically ...
Mooseok Jang   +5 more
doaj   +1 more source

Full-Field Super-Resolution Terahertz Imaging Based on Rotating Coherent Scattering Microscopy

open access: yesApplied Sciences, 2023
For decades, terahertz (THz) microscopic imaging has been limited by the resolution of the system due to the larger wavelength, the power of the source, and the equivalent noise power of the detector, so a lot of research has focused on single-point ...
Duoxuan Ma   +6 more
doaj   +1 more source

Nonlinear X-Wave Ultrasound Imaging of Acoustic Biomolecules

open access: yesPhysical Review X, 2018
The basic physics of sound waves enables ultrasound to visualize biological tissues with high spatial and temporal resolution. Recently, this capability was enhanced with the development of acoustic biomolecules—proteins with physical properties enabling
David Maresca   +4 more
doaj   +1 more source

Stiffness pulsation of the human brain detected by non-invasive time-harmonic elastography

open access: yesFrontiers in Bioengineering and Biotechnology, 2023
Introduction: Cerebral pulsation is a vital aspect of cerebral hemodynamics. Changes in arterial pressure in response to cardiac pulsation cause cerebral pulsation, which is related to cerebrovascular compliance and cerebral blood perfusion ...
Tom Meyer   +9 more
doaj   +1 more source

Simultaneous Coded Plane-Wave Imaging Using an Advanced Ultrasound Forward Model

open access: yesApplied Sciences, 2022
In the quest for higher acquisition rates of ultrasound images, the simultaneous emission of encoded waves has the potential to overcome the trade-off between acquisition time and image quality.
Frank Nicolet   +5 more
doaj   +1 more source

Ultrafast acousto-optic imaging with ultrasonic plane waves

open access: yesOptics Express, 2016
Due to multiple light scattering inside biological tissues, deep non-invasive optical medical imaging is very challenging. Acousto-optic imaging is a technique coupling ultrasound and light that allows recovering optical contrast at depths of few centimeters with a millimeter resolution.
Laudereau, Jean-Baptiste   +4 more
openaire   +3 more sources

WEC Scale Model Build & Test: Fabrication and Wave Laboratory Testing of 1/10 Scale Wave Energy Conversion Device

open access: yes
Neptune Wave Power, LLC (‘NWP’), worked with OWET, the Northwest National Marine Renewable Energy Center (‘NNMREC’) and Oregon State University (O.H. Hinsdale Wave Research Laboratory) to build and test a 1/10 scale model wave energy conversion (‘WEC ...
Neptune Wave Power LLC   +1 more
core   +6 more sources

Improving plane wave ultrasound imaging through real-time beamformation across multiple arrays

open access: yesScientific Reports, 2022
Ultrasound imaging is a widely used diagnostic tool but has limitations in the imaging of deep lesions or obese patients where the large depth to aperture size ratio (f-number) reduces image quality.
Josquin Foiret   +5 more
doaj   +1 more source

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