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Image Formation of Multifrequency Vibro-Acoustography: Theory and Computational Simulations
2005
XVIII Brazilian Symposium on Computer Graphics and Image Processing (SIBGRAPI'05)
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This paper presents an extension of vibro-acoustography imaging technique. ...
The PSF is evaluated for an eight-and a sixteen-element sector array transducers. Three phantom images are used to show how the system transforms them into observed data. ...
The stress field formation of standard vibro-acoustography has been investigated for spherical concave [10] , linear array [11] , and sector array transducers [12, 13] . ...
doi:10.1109/sibgrapi.2005.30
dblp:conf/sibgrapi/SilvaU05
fatcat:th5ddo3iazamxnbymh3r6isc5e
Implementation of vibro-acoustography on a clinical ultrasound system
2011
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
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Vibro-acoustography has demonstrated feasibility and usefulness in imaging of breast and prostate tissue. ...
We will discuss aperture definition for the two ultrasound beams and beamforming using a linear array transducer. ...
This work was supported in part by grants CA121579, CA127235, and CA091956 from the National Institutes of Health. ...
doi:10.1109/tuffc.2011.1927
pmid:21693399
pmcid:PMC3138131
fatcat:yqp5fgacarg4vhikzkruea3wmi
A Review of Vibro-acoustography and its Applications in Medicine
2011
Current Medical Imaging Reviews
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Vibro-acoustography is a speckle-free ultrasound based imaging modality that can visualize normal and abnormal soft tissue through mapping the acoustic response of the object to a harmonic radiation force ...
In vibro-acoustography, the ultrasound energy is converted from high ultrasound frequencies to a low acoustic frequency (acoustic emission) that is often two orders of magnitude smaller than the ultrasound ...
Disclosure of financial interests: Mayo Clinic and two of the authors (JFG and MF) have a financial interest associated with technology used in this research; the technology has been licensed in part for ...
doi:10.2174/157340511798038648
pmid:22423235
pmcid:PMC3298414
fatcat:pit4em6vmrbetnrgmv6lrnou3e
Ultrasound Radiation Force for the Assessment of Bone Fracture Healing in Children: An In Vivo Pilot Study
2019
Sensors
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We propose a new type of quantitative vibro-acoustic method based on the acoustic radiation force of ultrasound for bone characterization in persons with fracture. ...
This prospective study included 15 patients: 12 with clavicle fractures and three with ulna fractures. Contralateral intact bones were used as controls. ...
Treder for her assistance in patient recruitment.
Conflicts of Interest: The authors declare no conflicts of interest. Sensors 2019, 19, 955 ...
doi:10.3390/s19040955
fatcat:uy7myhtewjgxpeei4r5w4nvife
Deconvolution of vibroacoustic images using a simulation model based on a three dimensional point spread function
2013
Ultrasonics
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2012 pre-print arXiv:1207.3370v1 fatcat:opeydtlhgjapfpdpahjd4tmsda
Vibro-acoustography (VA) is a medical imaging method based on the difference-frequency generation produced by the mixture of two focused ultrasound beams. ...
The obtained images may have a resolution of 0.7--0.8 mm. Current VA systems based on confocal or linear array transducers generate C-scan images at the beam focal plane. ...
In this context, vibro-acoustography (VA) [1] has become a medical imaging tool for investigating calcifications in human arteries [2, 3, 4] , microcalcifications in the breast [5, 6] , liver tumors ...
doi:10.1016/j.ultras.2012.03.011
pmid:22617182
fatcat:ekjjnhhq6fatrbsyvikfanqapa
Emerging Ultrasound Technologies for Early Markers of Disease
2002
Disease Markers
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in principle can be used in concert with other imaging modalities to offer the possibility of further improvements in disease detection, evaluation, and monitoring. ...
Each provides independent information and, used alone, each can provide powerful new imaging capabilities; combined with each other, their capabilities may be even greater in many applications; and all ...
Acknowledgments The work of the authors has been supported in part by NIH grants CA53561, CA84274, CA84588, EB000238, and HL59302. ...
doi:10.1155/2002/167104
pmid:14646040
pmcid:PMC3851106
fatcat:lepslpfqrvdatikshno2pf5yla
Radiation force as a physical mechanism for ultrasonic neurostimulation of the ex vivo retina
2019
Journal of Neuroscience
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that neural activity was strongly modulated by the distance between the transducer and the electrode array showing the influence of standing waves on the response. ...
We imaged the isolated salamander retina of either sex during ultrasonic stimuli that drive ganglion cell activity and observed micron scale displacements, consistent with radiation force, the nonlinear ...
In comparison, vibro-acoustography generally uses difference frequencies in the range of 20 -100 kHz to mechanically vibrate tissue via dynamic radiation force to measure elasticity (Doherty et al., 2013 ...
doi:10.1523/jneurosci.2394-18.2019
pmid:31196935
pmcid:PMC6687898
fatcat:wgolfu3p65ddxb7wghriz6iywa
Seventh International Conference
2005
Bereavement Care
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Hydrostatic pressure in fluid can also be reconstructed together with fluid parameters in the same manner. ...
data used in this study. ...
In Vibro-acoustography, a confocal ultrasound transducer with two elements is employed. The ultrasound beams interact in the focal zone producing an AM force [1] . ...
doi:10.1080/02682620508657640
fatcat:hwoqd64zz5b6bkhpyteeazib5u
Analysis of room transfer function and reverberant signal statistics
2008
Journal of the Acoustical Society of America
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Newly developed imaging modalities include shear wave elasticity imaging, supersonic shear wave imaging, acoustic radiation force impulse imaging, and vibro-acoustography. ...
Vibro-acoustography ͑VA͒ is based on conversion of ultrasound energy from high frequency to a low frequency. ...
The forward-looking sonar uses a patented "sectorized emission" architecture. The images are side-scanlike. ...
doi:10.1121/1.2935346
fatcat:lxgnqr6tozajhge3ydet3xomam
A virtual auditory environment for investigating the auditory signal processing of realistic sounds
2008
Journal of the Acoustical Society of America
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Newly developed imaging modalities include shear wave elasticity imaging, supersonic shear wave imaging, acoustic radiation force impulse imaging, and vibro-acoustography. ...
Vibro-acoustography ͑VA͒ is based on conversion of ultrasound energy from high frequency to a low frequency. ...
The forward-looking sonar uses a patented "sectorized emission" architecture. The images are side-scanlike. ...
doi:10.1121/1.2936003
fatcat:ontu6yamdvgbnooet5fe36fm74
Amplitude modulation depth discrimination in hearing‐impaired and normal‐hearing listeners
2008
Journal of the Acoustical Society of America
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The new model was validated in comparison with predictions by reference models ͑e.g. FEM͒ and with the results of experiments in an anechoic chamber and in real rooms. ...
Measurement of room-to-room airborne sound insulation with an access floor in a dwelling unit of condominium. ...
Newly developed imaging modalities include shear wave elasticity imaging, supersonic shear wave imaging, acoustic radiation force impulse imaging, and vibro-acoustography. ...
doi:10.1121/1.2935715
fatcat:qsqohnv63fdsjgegqb2h5s7r7q
Cross‐spectral synergy and consonant identification
2008
Journal of the Acoustical Society of America
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The new model was validated in comparison with predictions by reference models ͑e.g. FEM͒ and with the results of experiments in an anechoic chamber and in real rooms. ...
Measurement of room-to-room airborne sound insulation with an access floor in a dwelling unit of condominium. ...
Newly developed imaging modalities include shear wave elasticity imaging, supersonic shear wave imaging, acoustic radiation force impulse imaging, and vibro-acoustography. ...
doi:10.1121/1.2935680
fatcat:znwocm35unasharfwbcap5omim
The perceptual flow of phonetic feature processing
2008
Journal of the Acoustical Society of America
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The new model was validated in comparison with predictions by reference models ͑e.g. FEM͒ and with the results of experiments in an anechoic chamber and in real rooms. ...
Measurement of room-to-room airborne sound insulation with an access floor in a dwelling unit of condominium. ...
Newly developed imaging modalities include shear wave elasticity imaging, supersonic shear wave imaging, acoustic radiation force impulse imaging, and vibro-acoustography. ...
doi:10.1121/1.2935993
fatcat:l2ix2ph575gh7l27xtjq264qkm
Temporal suppression and augmentation of click-evoked otoacoustic emissions
2008
Hearing Research
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The new model was validated in comparison with predictions by reference models ͑e.g. FEM͒ and with the results of experiments in an anechoic chamber and in real rooms. ...
Measurement of room-to-room airborne sound insulation with an access floor in a dwelling unit of condominium. ...
Newly developed imaging modalities include shear wave elasticity imaging, supersonic shear wave imaging, acoustic radiation force impulse imaging, and vibro-acoustography. ...
doi:10.1016/j.heares.2008.09.008
pmid:18926894
fatcat:bijdlpxpzfcsrjeefayvvu4pl4
Temporal suppression and augmentation of click‐evoked otoacoustic emissions
2008
Journal of the Acoustical Society of America
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The new model was validated in comparison with predictions by reference models ͑e.g. FEM͒ and with the results of experiments in an anechoic chamber and in real rooms. ...
Measurement of room-to-room airborne sound insulation with an access floor in a dwelling unit of condominium. ...
Newly developed imaging modalities include shear wave elasticity imaging, supersonic shear wave imaging, acoustic radiation force impulse imaging, and vibro-acoustography. ...
doi:10.1121/1.2935694
fatcat:z6yidzqqendznbmrczb3woaiv4
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