Results 11 to 20 of about 133,430 (295)

A Flexible Ultrasound Transducer Array with Micro-Machined Bulk PZT

open access: yesSensors, 2015
This paper proposes a novel flexible piezoelectric micro-machined ultrasound transducer, which is based on PZT and a polyimide substrate. The transducer is made on the polyimide substrate and packaged with medical polydimethylsiloxane. Instead of etching
Zhe Wang   +8 more
doaj   +3 more sources

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

open access: yesSensors, 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   +3 more sources

PMN-PT/Epoxy 1-3 composite based ultrasonic transducer for dual-modality photoacoustic and ultrasound endoscopy

open access: yesPhotoacoustics, 2019
Endoscopic dual-modality photoacoustic (PA) and ultrasound (US) imaging has the capability of providing morphology and molecular information simultaneously.
Yan Li   +8 more
doaj   +3 more sources

An Improved Equivalent Circuit Simulation of High Frequency Ultrasound Transducer

open access: yesFrontiers in Materials, 2021
The equivalent circuit simulation plays an important role in the design of ultrasound transducer. However, the existing methods are difficult to achieve the effect of matching and backing layer, and not able to accurately simulate the transducer with ...
Zhitian Shen   +7 more
doaj   +1 more source

Glass-windowed ultrasound transducers [PDF]

open access: yesUltrasonics, 2016
In research and industrial processes, it is increasingly common practice to combine multiple measurement modalities. Nevertheless, experimental tools that allow the co-linear combination of optical and ultrasonic transmission have rarely been reported.
Tostein, Yddal   +4 more
openaire   +2 more sources

High-speed wide-field photoacoustic microscopy using a cylindrically focused transparent high-frequency ultrasound transducer. [PDF]

open access: yesPhotoacoustics, 2022
Chen M   +10 more
europepmc   +2 more sources

Transcranial focused ultrasound stimulation with high spatial resolution

open access: yesBrain Stimulation, 2021
Background: Low-intensity transcranial focused ultrasound stimulation is a promising candidate for noninvasive brain stimulation and accurate targeting of brain circuits because of its focusing capability and long penetration depth.
Seongyeon Kim   +11 more
doaj   +1 more source

Capacitive micromachined ultrasound transducers for intravascular ultrasound imaging [PDF]

open access: yesMicrosystems & Nanoengineering, 2020
AbstractIntravascular ultrasound (IVUS) is a burgeoning imaging technology that provides vital information for the diagnosis of coronary arterial diseases. A significant constituent that enables the IVUS system to attain high-resolution images is the ultrasound transducer, which acts as both a transmitter that sends acoustic waves and a detector that ...
Jiaqi Wang   +3 more
openaire   +2 more sources

Simulation of ultrasonic imaging with linear arrays in causal absorptive media [PDF]

open access: yes, 1996
Rigorous and efficient numerical methods are presented for simulation of acoustic propagation in a medium where the absorption is described by relaxation processes.
Berkhoff, A.P.   +2 more
core   +10 more sources

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