Journal ArticleDOI
Supersonic shear imaging: a new technique for soft tissue elasticity mapping
TLDR
The first in vivo investigations made on healthy volunteers emphasize the potential clinical applicability of SSI for breast cancer detection and results validating SSI in heterogeneous phantoms are presented.Abstract:
Supersonic shear imaging (SSI) is a new ultrasound-based technique for real-time visualization of soft tissue viscoelastic properties. Using ultrasonic focused beams, it is possible to remotely generate mechanical vibration sources radiating low-frequency, shear waves inside tissues. Relying on this concept, SSI proposes to create such a source and make it move at a supersonic speed. In analogy with the "sonic boom" created by a supersonic aircraft, the resulting shear waves will interfere constructively along a Mach cone, creating two intense plane shear waves. These waves propagate through the medium and are progressively distorted by tissue heterogeneities. An ultrafast scanner prototype is able to both generate this supersonic source and image (5000 frames/s) the propagation of the resulting shear waves. Using inversion algorithms, the shear elasticity of medium can be mapped quantitatively from this propagation movie. The SSI enables tissue elasticity mapping in less than 20 ms, even in strongly viscous medium like breast. Modalities such as shear compounding are implementable by tilting shear waves in different directions and improving the elasticity estimation. Results validating SSI in heterogeneous phantoms are presented. The first in vivo investigations made on healthy volunteers emphasize the potential clinical applicability of SSI for breast cancer detection.read more
Citations
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Journal ArticleDOI
Coherent plane-wave compounding for very high frame rate ultrasonography and transient elastography
TL;DR: It is proposed to improve the beamforming process by using a coherent recombination of compounded plane-wave transmissions to recover high-quality echographic images without degrading the high frame rate capabilities.
Journal ArticleDOI
EFSUMB Guidelines and Recommendations on the Clinical Use of Ultrasound Elastography. Part 1: Basic Principles and Technology
Jeffrey C. Bamber,David O. Cosgrove,Christoph F. Dietrich,Jeremie Fromageau,Jörg Bojunga,Fabrizio Calliada,Cantisani,Jean Michel Correas,Mirko D'Onofrio,E. E Drakonaki,Mathias Fink,Mireen Friedrich-Rust,Odd Helge Gilja,Roald Flesland Havre,Christian Jenssen,Andrea Klauser,R Ohlinger,Adrian Saftoiu,F Schaefer,Ioan Sporea,Fabio Piscaglia +20 more
TL;DR: The technical part of these Guidelines and Recommendations provides an introduction to the physical principles and technology on which all forms of current commercially available ultrasound elastography are based.
Journal ArticleDOI
EFSUMB Guidelines and Recommendations on the Clinical Use of Ultrasound Elastography.Part 2: Clinical Applications
David O. Cosgrove,Fabio Piscaglia,Jeffrey C. Bamber,Jörg Bojunga,Jean Michel Correas,Odd Helge Gilja,Andrea Klauser,Ioan Sporea,Fabrizio Calliada,Cantisani,Mirko D'Onofrio,E. E Drakonaki,Mathias Fink,Mireen Friedrich-Rust,Jeremie Fromageau,Roald Flesland Havre,Christian Jenssen,R Ohlinger,Adrian Saftoiu,F Schaefer,Christoph F. Dietrich +20 more
TL;DR: The clinical part of these Guidelines and Recommendations produced under the auspices of the European Federation of Societies for Ultrasound in Medicine and Biology EFSUMB assesses the clinically used applications of all forms of elastography, stressing the evidence from meta-analyses and giving practical advice for their uses and interpretation.
Journal ArticleDOI
Ultrasound elastography: Principles and techniques
TL;DR: The principles of elastographic techniques are introduced and a technical summary for the main elastography techniques are given: from quasi-static methods that require a static compression of the tissue to dynamic methods that uses the propagation of mechanical waves in the body.
Journal ArticleDOI
Ultrafast imaging in biomedical ultrasound
Mickael Tanter,Mathias Fink +1 more
TL;DR: In this article, the basic principles and implementation of ultrafast imaging in biomedical ultrasound are illustrated and discussed in particular, present and future applications of ultra-fast imaging for screening, diagnosis, and therapeutic monitoring.
References
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Journal ArticleDOI
Elastography: A Quantitative Method for Imaging the Elasticity of Biological Tissues
TL;DR: Initial results of several phantom and excised animal tissue experiments are reported which demonstrate the ability of this technique to quantitatively image strain and elastic modulus distributions with good resolution, sensitivity and with diminished speckle.
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Magnetic resonance elastography by direct visualization of propagating acoustic strain waves
Raja Muthupillai,D. J. Lomas,Phillip J. Rossman,James F. Greenleaf,Armando Manduca,Richard L. Ehman +5 more
TL;DR: The results indicate that displacement patterns corresponding to cyclic displacements smaller than 200 nanometers can be measured and suggest the feasibility of a medical imaging technique for delineating elasticity and other mechanical properties of tissue.
Journal ArticleDOI
Shear wave elasticity imaging: a new ultrasonic technology of medical diagnostics
TL;DR: A physical and mathematical basis of SWEI is presented and some experimental results of pilot studies proving feasibility of this new ultrasonic technology are presented, including a theoretical model of shear oscillations in soft biological tissue remotely induced by the radiation force of focused ultrasound.
Journal ArticleDOI
Acoustic radiation force impulse imaging: in vivo demonstration of clinical feasibility.
TL;DR: Experimental results are presented demonstrating that displacements on the order of 10 microm can be generated and detected in soft tissues in vivo using a single transducer on a modified diagnostic US scanner and support the clinical feasibility of a radiation force-based remote palpation imaging system.
Journal ArticleDOI
Ultrasound-Stimulated Vibro-Acoustic Spectrography
TL;DR: An ultrasound method based on radiation force is presented for imaging the acoustic response of a material to mechanical excitation, which resulted in data from which images related to the elastic compositions of the acoustically emitting objects could be computed.