Results 1 to 10 of about 175,414 (264)

Clinical Application of Ultra-High-Frequency Ultrasound. [PDF]

J Pers Med, 2022
Musculoskeletal ultrasound involves the study of many superficial targets, especially in the hands, wrists, and feet. Many of these areas are within the first 3 cm of the skin surface and are ideal targets for ultra-high-frequency ultrasound. The high spatial resolution and the superb image quality achievable allow foreseeing a wider use of this novel ...
Russo A, Reginelli A, Lacasella GV, Grassi E, Karaboue MAA, Quarto T, Busetto GM, Aliprandi A, Grassi R, Berritto D.   +9 more
europepmc   +4 more sources

High-Frequency and Ultra-High-Frequency Ultrasound in Dermatologic Diseases and Aesthetic Medicine [PDF]

Medicina
Dermatologic ultrasonography applications are rapidly growing in all skin fields. Thanks to very high spatial resolution, high-frequency and ultra-high-frequency ultrasound can evaluate smaller structures, allowing us to improve diagnosis accuracy and ...
Giulio Argalia, Alfonso Reginelli, Elisa Molinelli, Anna Russo, Alessandra Michelucci, Andrea Sechi, Angelo Valerio Marzano, Stella Desyatnikova, Marco Fogante, Vittorio Patanè, Giammarco Granieri, Corrado Tagliati, Giulio Rizzetto, Edoardo De Simoni, Marco Matteucci, Matteo Candelora, Cecilia Lanza, Claudio Ventura, Nicola Carboni, Roberto Esposito, Stefano Esposito, Massimiliano Paolinelli, Elisabetta Esposto, Giuseppe Lanni, Gabriella Lucidi Pressanti, Chiara Giorgi, Fabiola Principi, Alberto Rebonato, Sylwia Patrycja Malinowska, Robert Krzysztof Mlosek, Gian Marco Giuseppetti, Valentina Dini, Marco Romanelli, Annamaria Offidani, Salvatore Cappabianca, Ximena Wortsman, Oriana Simonetti   +36 more
doaj   +2 more sources

Prurigo Nodularis at Ultra-High-Frequency Ultrasound [PDF]

Diagnostics
Here, we describe the case of a 48-year-old female patient with prurigo nodularis, where B-mode and color-Doppler ultrasound of one nodule was performed; this revealed hypoechoic dermal and hyperechoic epidermal thickening with lesion hypervascularity ...
Alessandra Michelucci, Corrado Tagliati, Flavia Manzo Margiotta, Giorgia Salvia, Marco Fogante, Giulio Rizzetto, Antonio Corvino, Elisa Molinelli, Annamaria Offidani, Oriana Simonetti, Marco Romanelli, Valentina Dini   +11 more
doaj   +2 more sources

Ultra-High-Frequency Ultrasound of Melanoma Excision Scars for Detection of Clinically Occult Local Recurrence: A Single-Center Retrospective Study [PDF]

Clinical, Cosmetic and Investigational Dermatology
Anna Russo,1 Vittorio Patanè,1 Lucrezia Bucciero,1 Mario Brunese,1 Teresa Troiani,1 Giuseppe Argenziano,2 Renato Franco,2 Alfonso Reginelli1 1Department of Precision Medicine, University of Campania “luigi Vanvitelli”, Naples, 80138, Italy; 2Department ...
Russo A, Patanè V, Bucciero L, Brunese M, Troiani T, Argenziano G, Franco R, Reginelli A   +7 more
doaj   +2 more sources

Simulation of TiN/HfO2/Pt memristor I–V curve for different conductive filament thickness [PDF]

Modern Electronic Materials, 2021
The operation of the TiN/HfO2/Pt bipolar memristor has been simulated by the finite elements method using the Maxwell steady state equations as a mathematical basis.
Andrey N. Aleshin, Nikolay V. Zenchenko, Oleg A. Ruban   +2 more
doaj   +3 more sources

Estimation of the activation energy in the Ag/SnSe/Ge2Se3/W self-directed channel memristor [PDF]

Modern Electronic Materials, 2023
In this study, we conducted an investigation into the Ag/SnSe/Ge2Se3/W ionic memristor, focusing on the determination of activation energies associated with its two primary operational processes: the formation of conductive filaments and memristor ...
Andrey N. Aleshin, Oleg A. Ruban
doaj   +3 more sources

High-temperature terahertz quantum-cascade lasers: design optimization and experimental results

Российский технологический журнал, 2022
Objectives. Terahertz quantum-cascade lasers (THz QCLs) are compact solid-state lasers pumped by electrical injection to generate radiation in the range from 1.2 to 5.4 THz.
D. V. Ushakov, A. A. Afonenko, I. A. Glinskiy, R. A. Khabibullin   +3 more
doaj   +1 more source

Improving the efficiency of an optical-to-terahertz converter using sapphire fibers

Российский технологический журнал, 2023
Objectives. The study aims to improve the efficiency of a large-area photoconductive terahertz (THz) emitter based on an optical-to-terahertz converter (OTC) having a radiating area of 0.3 × 0.3 mm2 for generating high-power THz radiation by using an ...
N. V. Zenchenko, D. V. Lavrukhin, I. A. Glinskiy, D. S. Ponomarev   +3 more
doaj   +1 more source

Fabrication and Characterization of an 8 × 8 Terahertz Photoconductive Antenna Array for Spatially Resolved Time Domain Spectroscopy and Imaging Applications

IEEE Access, 2021
Terahertz (THz) technology is promising in several applications such as imaging, spectroscopy and communications. Among several methods in the generation and detection of THz waves, a THz time-domain system that is developed using photoconductive ...
Raphael Henri, Kathirvel Nallappan, Dmitry S. Ponomarev, Hichem Guerboukha, Denis V. Lavrukhin, Alexander E. Yachmenev, Rustam A. Khabibullin, Maksim Skorobogatiy   +7 more
doaj   +1 more source

GaAs Molecular Beam Epitaxy on (110)-Oriented Substrates

Crystals, 2022
Molecular-beam epitaxial growth of Si-doped GaAs single-crystal layers on (110)-oriented GaAs substrates has been studied. The surface morphology of grown films was analyzed by scanning electron microscopy and atomic force microscopy, and the crystal ...
Evgeniy Klimov, Aleksey Klochkov, Sergey Pushkarev, Galib Galiev, Rinat Galiev, Nataliya Yuzeeva, Aleksey Zaitsev, Yury Volkovsky, Alexey Seregin, Pavel Prosekov   +9 more
doaj   +1 more source