NDLI: Materials for acoustic matching in ultrasound transducers

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2015 IEEE International Ultrasonics Symposium (IUS)

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2001 IEEE Ultrasonics Symposium. Proceedings. An International Symposium (Cat. No.01CH37263)

Volume 2 - 2001

Micro-fluidic channels with integrated ultrasonic transducers

Characterization of micromachined silicon nitride membrane using resonant ultrasound spectroscopy

Silicon ultrasonic horns for thin film accelerated stress testing

Periodic arrays of transducers built using sand blasting and ultrasound micromachining techniques for the fabrication of piezocomposite materials

Capacitive micromachined ultrasonic transducers with integrated optoelectronic readout

Scanning laser interferometric evaluation of individual elements and an entire micro-electro-mechanical ultrasonic array transducer

Biomimetic direction-sensitive micromachined diaphragm for ultrasonic transducers

Radiated fields of rectangular air-coupled micromachined transducers

An energetic definition of the electromechanical coupling coefficient for CMUTs

PMUTS design optimization for medical probes applications

Piezoelectrically actuated flextensional MUTs

Study of PZT coated membrane structures for micromachined ultrasonic transducers [medical imaging]

Micromachined unimorphs and bimorphs

High performance micromachined transducer based on electrostrictive P(VDF-TrFE) polymer

Micromachined piezoelectrically actuated flextensional transducers for high resolution printing and imaging

Capacitive micromachined ultrasonic transducers with asymmetric membranes for microfluidic applications

Micromachined capacitive transducer array for imaging in air

Capacitive micromachined ultrasonic transducers and their application

Cost-effective and manufacturable route to the fabrication of high-density 2D micromachined ultrasonic transducer arrays and (CMOS) signal conditioning electronics on the same silicon substrate

Micromachined ultrasonic silicon/PZT transducer for underwater communications

Influence of the electrode size and location on the performance of a CMUT [US transducer]

Residual stress and Young's modulus measurement of capacitive micromachined ultrasonic transducer membranes

Capacitive micromachined ultrasonic transducer arrays for medical imaging: experimental results

Improved modeling and design of microphones using radio frequency detection with capacitive micromachined ultrasonic transducers

An air-coupled ultrasonic matching layer employing half wavelength cavity resonance

Domain decomposition techniques for the finite element simulation of ultrasonic transducers

Application of normal mode theory to modeling of cross-coupling in 1D piezocomposite arrays

A plane-wave-expansion approach for modelling acoustic propagation in 2D and 3D piezoelectric periodic structures

Characterization of novel flextensional transducers designed by using topology optimization method

Dynamic 4/spl times/4 chain matrix for analytical modeling of piezoelectric actuator

Ultrasound probe - performance variation with coax parameters

Optimization of pulse transmission in a high-frequency ultrasound imaging system

Noise and element impedance in ultrasonic arrays with small elements

Finite element analysis of phased plano-concave multi-layer transducers

Resonant frequency tuning of two dimensional PZT array using laser trimming

A minimally invasive ultrasound probe using non-coax cabling

Finite element modeling of PZN-PT and PMN-PT single crystal materials

Determination of piezoelectric material parameters using a combined measurement and simulation technique

Modeling of piezoceramic composite transducer structures generating strong sound pulses in therapy

Functional grading of a piezoelectric 1-3 composite for ultrasound transducers with enhanced axial and lateral resolution

High performance piezoceramic films on substrates for high frequency imaging

Syntactic foam for air-equivalent solid backing by natural origin Shirasu-microballoon

Non-destructive evaluation of compositional and property distributions in large-size relaxor single crystal wafers

Vibration velocity limitation of transducer using hydrothermal PZT film

Materials for acoustic matching in ultrasound transducers

An experience of PNN-PT-PZ high-k piezoelectric ceramics aiming for medical imaging transducers

Effect of alignment of phases in a 2-2 based dual layer high bandwidth transducer

Characterization of transducer arrays by laser interferometry: influence of acousto-optic interactions on displacement measurements in water

Characterization of high-frequency transducers with small aperture hydrophones

Phase matched air ultrasonic transducers using corrugated PVDF film with half wavelength depth

Low-impedance and low-loss customized materials for air-coupled piezoelectric transducers

Directivity of integrated piezoelectric Lamb wave sources

PMN-PT transducer: high stress measurements at resonance

Piezoelectric properties and phase transitions of <001> oriented Pb(Zn/sub 1/3/Nb/sub 2/3/)O/sub 3/-PbTiO/sub 3/ single crystals

Characterization of transducers and resonators under high drive levels

Advanced piezoelectric materials for medical ultrasound transducers

Measurement of large ultrasonic displacements with an optical probe

Integrated-circuit implementation of a matched-cell dynamic focusing architecture for a 5-channel, 50-MHz planar annular array

Elevation beamforming performance of a 1.75 D array

Real-time curvilinear and improved rectilinear volumetric imaging

High bandwidth, high density arrays for advanced ultrasound imaging

Development of high frequency medical ultrasound arrays

Design of a 40 MHz annular array

20 MHz ultrasound array for medical imaging from design to image evaluation

A high frequency ultrasound array element using thermoelastic expansion in PDMS

Integrated mechanism based multiplane/3D ultrasonic imaging probes

Development of ultrasound transducer with double peak type frequency characteristics for harmonic imaging ultrasound diagnostic equipment

A 35 MHz linear array for medical imaging

Design of a high frequency annular array for medical ultrasound

Generation of very high pressure pulses at the surface of piezo-composite materials using electrical pre-stress

Design and testing of an MRI compatible therapeutic transducer

Narrowband impedance matching layer for high efficiency thickness mode ultrasonic transducers

Two-dimensional myocardial strain rate estimation using "snakes"

Age at time of infarction differentially affects the remodeling responses in viable cardiac tissue in young versus old rats

Evaluation of transmural myocardial deformation and reflectivity characteristics

Identification of reperfused infarcted myocardium from high frequency intracardiac ultrasound images using homodyned K distribution

Computer simulation of forward wave propagation in non-linear, heterogeneous, absorbing tissue

In vitro characterization of carotid plaque using a clinical ultrasound imaging system

Prediction of ultrasound attenuation in cancellous bones using poroelasticity and scattering theories

Characterization of bony tissues from ultrasonic backscattering using statistical models

New deal and prospects in long-bone ultrasonic imaging

Ultrasonic characterization of cancellous bone: theoretical and experimental analysis

A model to predict dispersion in cancellous bone

55 MHz ultrasound evaluation of the effects of anti-inflammatory drugs on arthritic cartilage

Segmentation of QUS images of the calcaneus using elastic deformation of flexible Fourier contour

Monte Carlo simulation of ultrasound backscattering by aggregating red blood cells

Young's modulus measurements of human liver and correlation with pathological findings

Calculation of radiation force on cylinders based on diffraction and ray approximation

Ultrasound skin characterization: an in vivo study of intra and inter individual variations

Magnitude of transmural heterogeneity as a dominant factor for LVEDP elevation in HCM

Axial transmission of 1 MHz ultrasonic waves on thin cortical bone plates: a simulation study

Unexpected anisotropic behavior of ultrasound attenuation after collagen cross-linking in porcine tendons

Analysis of ultrasound backscatter from ensembles of cells and isolated nuclei

B-mode images of spontaneous rat mammary tumors enhanced by estimated scatterer parameters

Ultrasonic multifeature tissue characterization for the early detection of prostate cancer

Application of spectrum analysis and neural-network classification to imaging for targeting and monitoring treatment of prostate cancer

High-power acoustic insult to cells as studied by acoustic microscopy

Estimation of hematocrit by means of attenuation measurement of ultrasonic wave in human blood

Radial distribution of the Doppler power from porcine blood over a pulsatile flow cycle

On the variance of mean integrated backscatter from moving blood

Ultrasonic measurement of backscatter from embryonic mouse red blood cells in vivo

Development and characterization of an innovative synthetic tissue-mimicking material for high intensity focused ultrasound (HIFU) exposures

Experimental temperature monitoring and coagulation detection using ultrasound-stimulated acoustic emission

Stepwise logistic regression analysis of tumor contour features for breast ultrasound diagnosis

Real-time three dimensional intracardiac echocardiography for guidance of cardiac interventional procedures

Enhancement of ultrasonic absorption by microbubbles for therapeutic application

Age-dependent threshold and superthreshold behavior of ultrasound-induced lung hemorrhage in pigs

Basic study on the effect of ultrasound exposure upon suppression of cancer cell proliferation

High speed imaging of acoustic vaporization of single droplets

A practical use of low frequency ultrasound for rapid and reproducible transdermal delivery of insulin

A high frequency ultrasonic bistoury designed to reduce friction trauma in cystectomy operations

Multi-frequency interstitial ultrasound applicator for conformal thermal therapy

Conformal heating using scanned 1-D phased array for external ultrasound hyperthermia

Comparison of split-beam transducer geometries and excitation configurations for transrectal prostate HIFU treatments

Ultrasound-guided localized detection of cavitation during, lithotripsy in pig kidney in vivo

Lesion formation and visualization using dual-mode ultrasound phased arrays

A hybrid breast biopsy system combining ultrasound and MRI

A system for ultrasound based intraoperative navigation in spine surgery

Ultrasound applicator for destruction of oesophagus tumours: first animals trials

A laparoscopic HIFU probe for kidney ablation prior to partial nephrectomy

Integrated pressure and flow sensor in silicon-based ultrasonic surgical actuator

MRI guided focused ultrasound surgery for the treatment of breast cancer

Unblocking cerebrospinal fluid shunts using low frequency ultrasonic cavitation

Acoustic fragmentation of therapeutic contrast agents designed for localized drug delivery

Microbubble enhanced threshold reductions for tissue damage using high intensity ultrasound

Acoustic output of a harmonic scalpel: airborne ultrasound and derived acoustic power in water

Joint probability discrimination between stationary tissue and blood velocity signals

Spectral Doppler flow velocity and Doppler angle estimations for small vessel by large sample volume

Experimental investigation of transverse velocity estimation using cross-correlation

Velocity estimation using synthetic aperture imaging [blood flow]

Quantitative assessment of the artery dilation measurements with an arterial phantom

High frame rate tissue Doppler imaging

Dynamic color Doppler extended field of view imaging

Validation of a theoretical approach for estimation of velocity error of a Vector Doppler system

A new maximum likelihood blood velocity estimator incorporating spatial and temporal correlation

A new high resolution color flow system using an eigendecomposition-based adaptive filter for clutter rejection

In vivo lateral flow estimation with spatial quadrature [medical ultrasound]

Lateral blood velocity measurement in the carotid artery via speckle tracking

IVUS transverse blood flow: dynamic noise suppression

Mapping high frequency ultrasonic fields with femtosecond laser generated cavitation

A hand-held, high frequency ultrasound scanner

A low voltage portable system using modified Golay sequences

Histology and ultrasound fusion of excised prostate tissue using surface registration

Ultrasound second harmonic imaging with a weighted chirp signal

Statistically significant differences in the spatial coherence of backscatter for fundamental and harmonic portions of a clinical beam

Comparison of time delay estimators in medical ultrasound

Aberration measurement and correction with a high resolution 1.75D array

Evaluation of backpropagation methods for transmit focus compensation

Pulse echo imaging through a human skull: in vitro experiments

Investigation of ultrasound phase shifts caused by the skull bone using low-frequency reflection data

Spatial filters for focusing ultrasound images

Real-time synthetic aperture beamforming: practical issues for hardware implementation

Simultaneous multizone focusing method with orthogonal chirp signals

Dynamic focus control for imaging with two-dimensional arrays

A new synthetic aperture focusing method using nonspherical wave fronts

A new architecture for a single-chip multi-channel beamformer based on a standard FPGA

A novel pulse compression technique using inverse filtering in frequency domain

Beamforming using the synthetic sine wave for ultrasonic imaging system

Novel aperture design method for improved depth of field in ultrasound imaging [medical applications]

Experimental validation of 3D finite differences simulations of ultrasonic wave propagation through the skull

Performance of reflex transmission imaging (RTI) using a linear array

Evaluation of translating apertures based angular scatter imaging on a clinical imaging system

Pulse-echo beamformer with high lateral and temporal resolution and depth-independent lateral response

Sidelobe reduction of images with coded limited diffraction beams

Classification of atherosclerotic plaque composition by spectral analysis of intravascular ultrasound data

A forward-viewing ring-annular array for intravascular ultrasound imaging

Vascular compliance using elasticity imaging

RF signal local compression computation for imaging strains within a vessel mimicking cryogel phantom and a carotid artery

A modified synthetic aperture focusing technique for the correction of geometric artefacts in intravascular ultrasound elastography

Assessment of regional myocardial strain using cardiac elastography: distinguishing infarcted from non-infarcted myocardium

Ultrasound-based strain rate estimation of moving, fully-developed speckle

Uncertainty relation in elastography: new approach to explain for errors of in vivo elastography

Application of vibro-acoustography to bone elasticity imaging

Quantitative assessment of the phase tracking method for measurement of the elastic characteristics of arterial wall

Modeling 2D speckle images accounting for 3D strain effects

Ultrasound stimulated vibro-acoustography

Ultrafast compound imaging for 2D displacement vector measurements: application to transient elastography and color flow mapping

Imaging viscoelastic properties of the vitreous

Evaluation of the mechanical properties of active skeletal muscle using acoustic radiation force impulse imaging

In vivo demonstration of acoustic radiation force impulse (ARFI) imaging in the thyroid, abdomen, and breast

Viscoelastic effects in sonoelastography: impact on tumor detectability

Strain magnitude estimation based on adaptive incompressibility processing

Real time strain imaging and in-vivo applications in prostate cancer

In vivo results of real-time freehand elasticity imaging

Is ultrasonic imaging a sensitive indicator of spatially varying elastic anisotropy?

Ultrasound-based pressure measurement using bubble decay

Fractal modeling of microbubble destruction-reperfusion in unresolved vessels

Comparison of ultrasound scattering properties of Optison(R) with a liquid perfluorocarbon nanoparticle contrast agent

Real-time optical imaging of individual microbubbles in an ultrasonic field

A light-scattering technique for investigating the destruction of ultrasound contrast agents

Experimental validation of a theoretical framework to predict radiation force displacement of contrast agents

Experimental investigation of contrast microbubble destruction

Targeted ultrasound contrast agents: diagnostic and therapeutic potential

Demonstration of urinary reflux diagnosis with in situ ultrasound generated contrast bubbles in a refluxing canine model

Contrast agent-induced cardiac arrhythmias in rats

Subharmonic phase-inversion for tumor perfusion estimation

Submicron contrast agents for the detection and localization of at risk lymph nodes

Design and acoustic characterization of a multi-frequency harmonic array for nonlinear contrast imaging

Reduction of nonlinear contrast agent scattering due to nonlinear wave propagation

Nonlinear coded excitation method for contrast imaging

Optimized receive filters and phase-coded pulse sequences for contrast agent and nonlinear imaging

Contrast pulse sequences (CPS): imaging nonlinear microbubbles

Non-linear scattering from microbubble contrast agents in the 14-40 MHz range

Relationships between scattered signals from ultrasonically activated contrast agents and cell membrane damage in vitro

Volume 1 - 2001

2000 IEEE Ultrasonics Symposium. Proceedings. An International Symposium (Cat. No.00CH37121)

1999 IEEE Ultrasonics Symposium. Proceedings. International Symposium (Cat. No.99CH37027)

1998 IEEE Ultrasonics Symposium. Proceedings (Cat. No. 98CH36102)

1997 IEEE Ultrasonics Symposium Proceedings. An International Symposium (Cat. No.97CH36118)

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1963 Ultrasonics Symposium

1962 Ultrasonics Symposium

Materials for acoustic matching in ultrasound transducers

Content Provider	IEEE Xplore Digital Library
Author	Rhee, S. Ritter, T.A. Shung, K.K. Wang, H. Cao, W.
Copyright Year	2001
Description	Author affiliation: NIH Resource Center on Med. Ultrasonic Transducer Technol., Pennsylvania State Univ., University Park, PA, USA (Rhee, S.)
Abstract	Acoustic impedance (Z) and fabrication issues for matching layers in high frequency transducers were identified. Guided by a density/impedance relationship established for various polymers, glasses, ceramics and metals, few monolithic materials with Z in the range of 6-9 MRayls were found. Composites of gold- and silver-polymer resulted in the desired impedances, however, with increased attenuation. Issues of microstructural scale, homogeneity and particle size effects were noted including issues of percolation behaviour for conducting composites. Using PiezoCad, the effect of matching layer thickness and impedance variation of a 100 MHz transducer were modeled.
Sponsorship	Ultrasonics, Ferroelectr., & Frequency Control Soc
Starting Page	1051
Ending Page	1055
File Size	310687
Page Count	5
File Format	PDF
ISBN	0780371771
DOI	10.1109/ULTSYM.2001.991900
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-10-07
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Acoustic materials Ultrasonic imaging Acoustic transducers Ultrasonic transducers Impedance Fabrication Frequency Polymers Glass Ceramics
Content Type	Text
Resource Type	Article

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