Results 61 to 70 of about 133,430 (295)

Operating limits for acoustic measurement of rolling bearing oil film thickness [PDF]

, 2003
An ultrasonic pulse striking a thin layer of liquid trapped between solid bodies will be partially reflected. The proportion reflected is a function of the layer stiffness, which in turn depends on the film thickness and its bulk modulus.
Bruce W Drinkwater, Cameron, Drinkwater, Dwyer-Joyce, Jacobson, Rob S Dwyer-Joyce   +5 more
core   +2 more sources

Neurovascular Contacts in the Pathophysiology of Neuralgic Amyotrophy: An Observational Study

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Neuralgic amyotrophy (NA) is a prevalent, monophasic, multifocal immune‐mediated neuropathy. A distinctive characteristic of the disease is the occurrence of nerve or fascicle constrictions and torsions (NA‐associated focal nerve lesions, NAFL). The pathophysiology underlying this phenomenon remains to be fully elucidated.
Johannes Fabian Holle, Andreas Leha, Volker Limmroth, Wolfram Windisch, Maximilian Zimmermann   +4 more
wiley   +1 more source

Combined drug delivery and treatment monitoring using a single high frequency ultrasound system

International Journal of Hyperthermia
Ultrasound-mediated drug delivery is typically performed using transducers with center frequencies [Formula: see text]1 MHz to promote acoustic cavitation. Such frequencies are not commonly used for diagnostic ultrasound due to limited spatial resolution.
Yesna O. Yildiz, Jia-Ling Ruan, Michael D. Gray, Luca Bau, Richard J. Browning, Christophoros Mannaris, Anne E. Kiltie, Borivoj Vojnovic, Eleanor Stride   +8 more
doaj   +1 more source

Effects of Non-Elevation-Focalized Linear Array Transducer on Ultrasound Plane-Wave Imaging

Sensors, 2016
Plane-wave ultrasound imaging (PWUS) has become an important method of ultrasound imaging in recent years as its frame rate has exceeded 10,000 frames per second, allowing ultrasound to be used for two-dimensional shear wave detection and functional ...
Congzhi Wang, Yang Xiao, Jingjing Xia, Weibao Qiu, Hairong Zheng   +4 more
doaj   +1 more source

Transducer for harmonic intravascular ultrasound imaging [PDF]

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2005
A recent study has shown the feasibility of tissue harmonic imaging (THI) using an intravascular ultrasound (IVUS) transducer. This correspondence describes the design, fabrication, and characterization of a THI-optimized piezoelectric transducer with oval aperture of 0.75 mm by 1 mm. The transducer operated at 20 MHz and 40 MHz, and was comprised of a
Vos, Hendrik J., Frijlink, Martijn E., Droog, Erik, Goertz, David E., Blacquiere, Gerrit, Gisolf, Anton, de Jong, Nico, van der Steen, Antonius F.W.   +7 more
openaire   +3 more sources

An All‐Optical Driven Bio‐Photovoltaic Interface for Active Control of Live Cells

Advanced Functional Materials, EarlyView.
Bio‐photovoltaic Interface (BIO‐PV‐I) for live cell manipulation is presented. BIO‐PV‐I can be activated non‐invasively and remotely to control the spatial motility, adhesion, and morphology of cells adhering to it. BIO‐PV‐I uses a patterned light‐induced electric potential in iron‐doped lithium niobate crystals whose light‐driven and reversible nature,
Lisa Miccio, Martina Mugnano, Valentina Marchesano, Alejandro Calabuig, Zhe Wang, Gennaro Giordano, Francesca Borrelli, Simonetta Grilli, Pietro Ferraro   +8 more
wiley   +1 more source

An ultrasonic transducer focusing ultrasound into a thin waveguide by two elliptical reflectors

Applied Physics Express
A high-power ultrasonic transducer for minimally invasive treatments is proposed, capable of treating areas inaccessible by high-intensity focused ultrasound treatments.
Shoki Ieiri, Kyohei Yamada, Tatsuki Sasamura, Shinsuke Itoh, Takashi Kasashima, Takeshi Morita   +5 more
doaj   +1 more source

Predicting mammographic density with a linear ultrasound transducer

Senologie - Zeitschrift für Mammadiagnostik und -therapie, 2022
Abstract Background High mammographic density (MD) is a risk factor for the development of breast cancer (BC). Changes in MD are influenced by multiple factors such as age, BMI, number of full-term pregnancies and lactating periods.
Behrens, Annika, Fasching, Peter A., Schwenke, Eva, Gass, Paul, Häberle, Lothar, Heindl, Felix, Heusinger, Katharina, Lotz, Laura, Lubrich, Hannah, Preuß, Caroline, Schneider, Michael O., Schulz-Wendtland, Rüdiger, Stumpfe, Florian M., Uder, Michael, Wunderle, Marius, Zahn, Anna L., Hack, Carolin C., Beckmann, Matthias W., Emons, Julius   +18 more
openaire   +4 more sources

Multi‐Scale Interface Engineering of MXenes for Multifunctional Sensory Systems

Advanced Functional Materials, EarlyView.
MXenes, as two‐dimensional transition metal carbides and nitrides, demonstrate remarkable capabilities for multifunctional sensing applications. This review systematically examines multi‐scale interface engineering approaches that enhance sensing performance, enable diverse detection functionalities, and improve system‐level compatibility in MXene ...
Jiaying Liao, Sin‐Yi Pang, Jianhua Hao
wiley   +1 more source

Ultrasound transducer disinfection in emergency medicine practice

Antimicrobial Resistance and Infection Control, 2016
Background External ultrasound transducer disinfection is common practice in medicine. Unfortunately, clinically significant organisms, such as methicillin-resistant Staphylococcus aureus (MRSA), Pseudomonas aeruginosa, and Klebsiella pneumonia spread ...
Riley Hoyer, Srikar Adhikari, Richard Amini   +2 more
doaj   +1 more source