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ABFM NEWS - Ultra Som
 
Ultrasound contrast microbubbles in imaging and therapy: physical principles and engineering.
 
Microbubble contrast agents and the associated imaging systems have developed over the past 25 years, originating with manually-agitated fluids introduced for intra-coronary injection... [+ leia mais]
Colaborador: Camila Pessoa de Sales.
Fonte: Physics in Medicine and Biology.
 
 
Basic physics of ultrasound imaging.
 
The appearance of ultrasound images depends critically on the physical interactions of sound with the tissues in the body. The basic principles of ultrasound imaging and the physical reasons for many common artifacts are described... [+ leia mais]
Colaborador: Alexandre Colello Bruno e Antonio Adilton Carneiro
Fonte: FEEA.
 
 
Acoustic elastography under dynamic compression using one-dimensional track motion.
 
This work provides an detailed analysis of a method for ultrasound-based elasticity image formation using dynamic compression technique. Radiofrequency (RF) data acquired from a homogenous phantom, where both mechanical and acoustic proprieties were set equivalent to biologic tissues, were used to validate our results... [+ leia mais]
Colaborador: Alexandre Colello Bruno e Antonio Adilton Carneiro
Fonte: IEEE.
 
 
Elastografia por ultra-som: uma nova modalidade de imagem.
 
Tumores podem ser mais rígidos que o tecido sadio em torno deles. Com base nessa diferença, foi proposta no início dos anos 1990 uma nova modalidade de imagem médica: a elastografia por ultra-som, técnica não invasiva e sem risco para o paciente... [+ leia mais]
Colaborador: Antonio Adilton Carneiro.
Fonte: Ciência Hoje.
 
 
Calibration and measurement issues for therapeutic ultrasound.
 
This review paper examines some of the issues relating to calibration and measurement of therapeutic medical ultrasonic equipment (MUE)... [+ leia mais]
Colaborador: Antonio Adilton Carneiro.
Fonte: Ultrasonics.
 
 
Development of an ultra-portable echo device connected to USB port.
 
In practical cardiology, a stethoscope based auscultation has been used to reveal the patient|s clinical status. Recently, several hand-held echo devices are going on market and they are expected to play a role as “visible” auscultation instead of stethoscope... [+ leia mais]
Colaborador: Antonio Adilton Carneiro e Theo Zeferino Pavan.
Fonte: Ultrasonics.
 
 
A Programmable Real-Time System for Development and Test of New Ultrasound Investigation Methods.
 
In vitro and/or in vivo experimental tests represent a crucial phase in the development of new ultrasound (US) investigation methods for biomedical applications... [+ leia mais]
Colaborador: Antonio Adilton Carneiro e Theo Zeferino Pavan.
Fonte: IEEE Trans Ultrason Ferroelectr Freq Control.
 
 
Displacement Vector Measurement Using Instantaneous Ultrasound Signal Phase —Multidimensional Autocorrelation and Doppler Methods.
 
Two new methods of measuring a multidimensional displacement vector using an instantaneous ultrasound signal phase are described, i.e., the multidimensional autocorrelation method (MAM) and multidimensional Doppler method (MDM)... [+ leia mais]
Colaborador: Antonio Adilton Oliveira Carneiro.
Fonte: ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTRO
 
 
Quantitative Characterization of Viscoelastic Properties of Human Prostate Correlated with Histology.
 
Quantification of mechanical properties of human prostate tissue is important for developing sonoelastography for prostate cancer detection. In this study, we characterized the frequency-dependent complex Young|s modulus of normal and cancerous prostate tissues in vitro by using stress relaxation testing and viscoelastic tissue modeling methods... [+ leia mais]
Colaborador: Antonio Adilton Oliveira Carneiro.
Fonte: Ultrasound in Medicine and Biology.
 
 
On the feasibility of remote palpation using acoustic radiation force.
 
A method of acoustic remote palpation, capable of imaging local variations in the mechanical properties of tissue, is under investigation. In this method, focused ultrasound is used to apply localized (on the order of 2 mm3) radiation force within tissue... [+ leia mais]
Colaborador: Antonio Adilton Carneiro.
Fonte: The Journal of the Acoustical Society of America.
 
 
An Intelligent Interface for Freehand Strain Imaging.
 
We present a new, intelligent interface for freehand strain imaging, which has been designed to support clinical trials investigating the potential of ultrasonic strain imaging for diagnostic purposes across a broad range of target pathologies... [+ leia mais]
Colaborador: Antonio Adilton Carneiro.
Fonte: Ultrasound in Medicine & Biology.
 
 
Methodology for Developing a High-Precision Ultrasound Flow Meter and Fluid Velocity Profile Reconstruction.
 
This article reports the methodology used to develop a high-precision ultrasound transit time flow meter dedicated to liquid hydrocarbons. This kind of flow meter is designed for custody transfer applications requiring accuracy better than 0.15% of reading... [+ leia mais]
Colaborador: Antonio Adilton Carneiro.
Fonte: ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTRO
 
 
Dynamic Resolution Selection in Ultrasonic Strain Imaging.
 
Ultrasonic strain imaging promises to be a valuable tool in medical diagnostics. Reliability and ease-of-use have become important considerations. These depend on selection of appropriate imaging parameters... [+ leia mais]
Colaborador: Antonio Adilton Carneiro.
Fonte: Ultrasound in Medicine and Biology.
 
 
Instrumentation for In Vivo Ultrasonic Characterization of Bone Strength.
 
Although it has been more than 20 years since the first recorded use of a quantitative ultrasound (QUS) technology to predict bone fragility, the field has not yet reached its maturity… [+ leia mais]
Colaborador: Prof. Antonio Adilton O. Carneiro.
Fonte: IEEE Transactions on Ultrasonics, Ferroelectrics,
 
 
Development and Clinical Testing of an Ultrasonic Diagnostic System for Functional Gastrointestinal Disorders.
 
Functional gastrointestinal disorders (FGIDs) affect millions of people without regard for age, race or sex, but little information related to FGIDs and few methods are available for diagnosing FGIDs… [+ leia mais]
Colaborador: Prof. Antonio Adilton O. Carneiro.
Fonte: Ultrasound in Medicine and Biology.
 
 
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