Results 41 to 50 of about 297,354 (275)

Quantitative Photoacoustic Imaging in the Acoustic Regime using SPIM

, 2017
While in standard photoacoustic imaging the propagation of sound waves is modeled by the standard wave equation, our approach is based on a generalized wave equation with variable sound speed and material density, respectively.
Beigl, Alexander, Elbau, Peter, Sadiq, Kamran, Scherzer, Otmar   +3 more
core   +1 more source

When holography meets coherent diffraction imaging [PDF]

, 2012
Modern imaging techniques at the molecular scale rely on utilizing novel coherent light sources like X-ray free electron lasers for the ultimate goal of visualizing such objects as individual biomolecules rather than crystals. Here, unlike in the case of
Barakat, Bates, Bates, Bates, Bates, Bates, Bruck, Dierolf, Eisebitt, Fienup, Fienup, Fienup, Fienup, Gabor, Gabor, Gerchberg, Hans-Werner Fink, Hofstetter, Huang, Huang, Huiser, Huiser, Jean-Nicolas Longchamp, Latychevskaia, Latychevskaia, Latychevskaia, Latychevskaia, Longchamp, Maiden, Marchesini, Marchesini, Marchesini, McNulty, Miao, Miao, Millane, Nair, Nelson, Nishino, Raines, Sayre, Sayre, Seibert, Shapiro, Song, Spence, Steinwand, Steinwand, Tatiana Latychevskaia, Thibault, Thibault, Thibault, Vine, Weierstall, Whitehead, Wilke, Williams, Williams, Williams, Williams, Zuo   +60 more
core   +1 more source

Nonlinear X-Wave Ultrasound Imaging of Acoustic Biomolecules

Physical 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, Daniel P. Sawyer, Guillaume Renaud, Audrey Lee-Gosselin, Mikhail G. Shapiro   +4 more
doaj   +1 more source

Growth and characteristics of type-II InAs/GaSb superlattice-based detectors [PDF]

, 2011
We report on growth and device performance of infrared photodetectors based on type II InAs/Ga(In)Sb strain layer superlattices (SLs) using the complementary barrier infrared detector (CBIRD) design.
Gunapala, S. D., Höglund, L., Keo, S. A., Khoshakhlagh, A., Liao, A., Nguyen, J., Soibel, A., Ting, D. Z.   +7 more
core   +1 more source

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

Applied 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, Denis Bujoreanu, Ewen Carcreff, Hervé Liebgott, Denis Friboulet, Barbara Nicolas   +5 more
doaj   +1 more source

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

Scientific 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, Xiran Cai, Hanna Bendjador, Eun-Yeong Park, Aya Kamaya, Katherine W. Ferrara   +5 more
doaj   +1 more source

Phase-Aberration Correction in Shear-Wave Elastography Imaging Using Local Speed-of-Sound Adaptive Beamforming

Frontiers in Physics, 2021
Shear wave elasticity imaging (SWEI) is a non-invasive imaging modality that provides tissue elasticity information by measuring the travelling speed of an induced shear-wave.
Bhaskara R. Chintada, Richard Rau, Orcun Goksel, Orcun Goksel   +3 more
doaj   +1 more source

Ultrafast acousto-optic imaging with ultrasonic plane waves

Optics 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, Grabar, Alexander A, Tanter, Mickaël, Gennisson, Jean-Luc, Ramaz, François   +4 more
openaire   +3 more sources

Coronagraphic phase diversity: performance study and laboratory demonstration

, 2013
The final performance of current and future instruments dedicated to exoplanet detection and characterization (such as SPHERE on the European Very Large Telescope, GPI on Gemini North, or future instruments on Extremely Large Telescopes) is limited by ...
Mugnier, L. M., Paul, B., Sauvage, J. -F.   +2 more
core   +3 more sources

Single camera 3D planar Doppler velocity measurements using imaging fibre bundles [PDF]

, 2006
Two frequency planar Doppler Velocimetry (2ν-PDV) is a modification of the Planar Doppler Velocimetry (PDV) method that allows velocity measurements to be made, quickly and non intrusively, across a plane defined by a laser light sheet.
Charrett, Thomas O. H., Ford, Helen D., Tatam, Ralph P.   +2 more
core   +1 more source