Username

Password

Forgot Password?

Preview

Sign-in free and Explore the Exciting World of BiomedExperts:

Over 1.500.000 Profiles
More than 1.800 Organizations worldwide
State of the Art Network Visualizations

Manage your own Profile
Locate Experts in your Country/Region
Locate Experts in your 1. and 2. Level Network
Connect to Experts Worldwide

NetworkView

Jonathan Ophir

This is a preview profile on BiomedExperts - the first literature-based scientific social network. It brings the right researchers together and allows them to collaborate online. Collexis and Dell provide the BiomedExperts network of +1.5 Million pre-calculated profiles free of charge to researchers worldwide.

Research Profile (preview)

Phenomena

Procedures

Objects

Activities & Behaviors

Concepts & Ideas

Occupations

Chemicals & Drugs

Gelatin

Devices

Transducers

Sign-in to see full Profile

Network (preview)

Co-Publications
Name
24
Krouskop, Thomas
21
Varghese, Tomy
20
Kallel, Faouzi
17
Konofagou, Elisa
16
Righetti, Raffaella
14
Srinivasan, Seshadri
12
Alam, Kaisar
8
Garra, Brian
5
Thitaikumar, Arun
4
Price, Roger
4
Bilgen, Mehmet
3
Hazle, John
3
Souchon, Rémi
3
Stafford, Jason
3
Kumar, Arun Thitai

Sign-in to see all Coauthors

Publications

TOP 3
Thitaikumar Arun; Mobbs Louise M; Kraemer-Chant Christina M; Garra Brian S; Ophir Jonathan
Breast tumor classification using axial shear strain elastography: a feasibility study.
Patil Abhay V; Krouskop Thomas A; Ophir Jonathan; Srinivasan Seshadri
On the differences between two-dimensional and three-dimensional simulations for assessing elastographic image quality: a simulation study.
Righetti Raffaella; Garra Brian S; Mobbs Louise M; Kraemer-Chant Christina M; Ophir Jonathan; Krouskop Thomas A
The feasibility of using poroelastographic techniques for distinguishing between normal and lymphedematous tissues in vivo.

Sign-in to see all Publications

Sign in free and see...

Visualized networks:

See your personal network in
sophisticated graphical views

GeoTargeted Searches:

Locate experts around the world
and connect with global collaborators

Research Profiles:

See the visualized research activity
of experts around the globe

Sign-in to see more

Geonetwork of Jonathan Ophir (preview)

Cities where this author has publications
Cities where co-authors of this author have publications

Flash Player Required

Sign-in to see more

All Publications

2008: Thitaikumar Arun; Mobbs Louise M; Kraemer-Chant Christina M; Garra Brian S; Ophir Jonathan
Breast tumor classification using axial shear strain elastography: a feasibility study.
Physics in medicine and biology 2008;53(17):4809-23.
2008: Patil Abhay V; Krouskop Thomas A; Ophir Jonathan; Srinivasan Seshadri
On the differences between two-dimensional and three-dimensional simulations for assessing elastographic image quality: a simulation study.
Ultrasound in medicine & biology 2008;34(7):1129-38.
2007: Righetti Raffaella; Garra Brian S; Mobbs Louise M; Kraemer-Chant Christina M; Ophir Jonathan; Krouskop Thomas A
The feasibility of using poroelastographic techniques for distinguishing between normal and lymphedematous tissues in vivo.
Physics in medicine and biology 2007;52(21):6525-41.
2007: Thitaikumar Arun; Ophir Jonathan
Effect of lesion boundary conditions on axial strain elastograms: a parametric study.
Ultrasound in medicine & biology 2007;33(9):1463-7.
2007: Righetti Raffaella; Righetti Mariapaola; Ophir Jonathan; Krouskop Thomas A
The feasibility of estimating and imaging the mechanical behavior of poroelastic materials using axial strain elastography.
Physics in medicine and biology 2007;52(11):3241-59.
2007: Thitaikumar Arun; Krouskop Thomas A; Garra Brian S; Ophir Jonathan
Visualization of bonding at an inclusion boundary using axial-shear strain elastography: a feasibility study.
Physics in medicine and biology 2007;52(9):2615-33.
2007: Righetti Raffaella; Ophir Jonathan; Kumar Arun Thitai; Krouskop Thomas A
Assessing image quality in effective Poisson's ratio elastography and poroelastography: II.
Physics in medicine and biology 2007;52(5):1321-33.
2007: Righetti Raffaella; Srinivasan Seshadri; Kumar Arun Thitai; Ophir Jonathan; Krouskop Thomas A
Assessing image quality in effective Poisson's ratio elastography and poroelastography: I.
Physics in medicine and biology 2007;52(5):1303-20.
2007: Thitaikumar Arun; Krouskop Thomas A; Ophir Jonathan
Signal-to-noise ratio, contrast-to-noise ratio and their trade-offs with resolution in axial-shear strain elastography.
Physics in medicine and biology 2007;52(1):13-28.
2006: Thitaikumar Arun; Righetti Raffaella; Krouskop Thomas A; Ophir Jonathan
Resolution of axial shear strain elastography.
Physics in medicine and biology 2006;51(20):5245-57.
2006: Chandrasekhar R; Ophir J; Krouskop T; Ophir K
Elastographic image quality vs. tissue motion in vivo.
Ultrasound in medicine & biology 2006;32(6):847-55.
2005: Righetti Raffaella; Ophir Jonathan; Garra Brian S; Chandrasekhar Rajah M; Krouskop Thomas A
A new method for generating poroelastograms in noisy environments.
Ultrasonic imaging 2005;27(4):201-20.
2005: Kumar Arun Thitai; Ophir Jonathan; Krouskop Thomas A
Noise performance and signal-to-noise ratio of shear strain elastograms.
Ultrasonic imaging 2005;27(3):145-65.
2005: Righetti Raffaella; Ophir Jonathan; Krouskop Thomas A
A method for generating permeability elastograms and Poisson's ratio time-constant elastograms.
Ultrasound in medicine & biology 2005;31(6):803-16.
2004: Srinivasan S; Righetti R; Ophir J
An experimental characterization of elastographic spatial resolution: analysis of the trade-offs between spatial resolution and contrast-to-noise ratio.
Ultrasound in medicine & biology 2004;30(10):1269-80.
2004: Srinivasan S; Ophir J; Alam S K
Theoretical derivation of SNR, CNR and spatial resolution for a local adaptive strain estimator for elastography.
Ultrasound in medicine & biology 2004;30(9):1185-97.
2004: Langevin Helene M; Konofagou Elisa E; Badger Gary J; Churchill David L; Fox James R; Ophir Jonathan; Garra Brian S
Tissue displacements during acupuncture using ultrasound elastography techniques.
Ultrasound in medicine & biology 2004;30(9):1173-83.
2004: Srinivasan S; Krouskop T; Ophir J
A quantitative comparison of modulus images obtained using nanoindentation with strain elastograms.
Ultrasound in medicine & biology 2004;30(7):899-918.
2004: Srinivasan Seshadri; Krouskop T; Ophir Jonathan
Comparing elastographic strain images with modulus images obtained using nanoindentation: preliminary results using phantoms and tissue samples.
Ultrasound in medicine & biology 2004;30(3):329-43.
2004: Righetti Raffaella; Ophir Jonathan; Srinivasan Seshadri; Krouskop Thomas A
The feasibility of using elastography for imaging the Poisson's ratio in porous media.
Ultrasound in medicine & biology 2004;30(2):215-28.
2003: Bilgen Mehmet; Srinivasan Seshadri; Lachman Lawrence B; Ophir Jonathan
Elastography imaging of small animal oncology models: a feasibility study.
Ultrasound in medicine & biology 2003;29(9):1291-6.
2003: Krouskop Thomas A; Younes Pamela S; Srinivasan Seshadri; Wheeler Thomas; Ophir Jonathan
Differences in the compressive stress-strain response of infiltrating ductal carcinomas with and without lobular features--implications for mammography and elastography.
Ultrasonic imaging 2003;25(3):162-70.
2003: Souchon Rémi; Rouvière Olivier; Gelet Albert; Detti Valérie; Srinivasan Seshadri; Ophir Jonathan; Chapelon Jean Yves
Visualisation of HIFU lesions using elastography of the human prostate in vivo: preliminary results.
Ultrasound in medicine & biology 2003;29(7):1007-15.
2003: Srinivasan S; Righetti R; Ophir J
Trade-offs between the axial resolution and the signal-to-noise ratio in elastography.
Ultrasound in medicine & biology 2003;29(6):847-66.
2003: Righetti Raffaella; Srinivasan Seshadri; Ophir Jonathan
Lateral resolution in elastography.
Ultrasound in medicine & biology 2003;29(5):695-704.
2003: Srinivasan S; Ophir J
A zero-crossing strain estimator for elastography.
Ultrasound in medicine & biology 2003;29(2):227-38.
2003: Madsen E L; Frank G R; Krouskop T A; Varghese T; Kallel F; Ophir J
Tissue-mimicking oil-in-gelatin dispersions for use in heterogeneous elastography phantoms.
Ultrasonic imaging 2003;25(1):17-38.
2002: Srinivasan S; Kallel F; Ophir J
The effects of digitization on the elastographic signal-to-noise ratio.
Ultrasound in medicine & biology 2002;28(11-12):1521-34.
2002: Srinivasan S; Ophir J; Alam S K
Elastographic imaging using staggered strain estimates.
Ultrasonic imaging 2002;24(4):229-45.
2002: Souchon Rémi; Soualmi Lahbib; Bertrand Michel; Chapelon Jean-Yves; Kallel Faouzi; Ophir Jonathan
Ultrasonic elastography using sector scan imaging and a radial compression.
Ultrasonics 2002;40(1-8):867-71.
2002: Srinivasan S; Kallel F; Souchon R; Ophir J
Analysis of an adaptive strain estimation technique in elastography.
Ultrasonic imaging 2002;24(2):109-18.
2002: Konofagou Elisa E; D'hooge Jan; Ophir Jonathan
Myocardial elastography--a feasibility study in vivo.
Ultrasound in medicine & biology 2002;28(4):475-82.
2002: Srinivasan S; Kallel F; Ophir J
Estimating the elastographic signal-to-noise ratio using correlation coefficients.
Ultrasound in medicine & biology 2002;28(3):359-68.
2002: Righetti Raffaella; Ophir Jonathan; Ktonas Periklis
Axial resolution in elastography.
Ultrasound in medicine & biology 2002;28(1):101-13.
2002: Alaniz Alex; Kallel Faouzi; Hungerford Ed; Ophir Jonathan
Variational method for estimating the effects of continuously varying lenses in HIFU, sonography, and sonography-based cross-correlation methods.
The Journal of the Acoustical Society of America 2002;111(1 Pt 1):468-74.
2001: Varghese T; Ophir J
Experimental corroboration of the nonstationary strain estimation errors in elastography.
Ultrasound in medicine & biology 2001;27(12):1677-82.
2001: Varghese T; Ophir J; Konofagou E; Kallel F; Righetti R
Tradeoffs in elastographic imaging.
Ultrasonic imaging 2001;23(4):216-48.
2001: Konofagou E E; Harrigan T P; Ophir J; Krouskop T A
Poroelastography: imaging the poroelastic properties of tissues.
Ultrasound in medicine & biology 2001;27(10):1387-97.
2001: Kallel F; Prihoda C D; Ophir J
Contrast-transfer efficiency for continuously varying tissue moduli: simulation and phantom validation.
Ultrasound in medicine & biology 2001;27(8):1115-25.
2001: Varghese T; Bilgen M; Ophir J
Phase aberration effects in elastography.
Ultrasound in medicine & biology 2001;27(6):819-27.
2000: Varghese T; Konofagou E E; Ophir J; Alam S K; Bilgen M
Direct strain estimation in elastography using spectral cross-correlation.
Ultrasound in medicine & biology 2000;26(9):1525-37.
2000: Konofagou E E; Varghese T; Ophir J
Theoretical bounds on the estimation of transverse displacement, transverse strain and Poisson's ratio in elastography.
Ultrasonic imaging 2000;22(3):153-77.
2000: Varghese T; Ophir J; Krouskop T A
Nonlinear stress-strain relationships in tissue and their effect on the contrast-to-noise ratio in elastograms.
Ultrasound in medicine & biology 2000;26(5):839-51.
2000: Konofagou E E; Ophir J
Precision estimation and imaging of normal and shear components of the 3D strain tensor in elastography.
Physics in medicine and biology 2000;45(6):1553-63.
2000: Ophir J; Garra B; Kallel F; Konofagou E; Krouskop T; Righetti R; Varghese T
Elastographic imaging.
Ultrasound in medicine & biology 2000;26 Suppl 1():S23-9.
2000: Konofagou E E; Varghese T; Ophir J
Spectral estimators in elastography.
Ultrasonics 2000;38(1-8):412-6.
2000: Konofagou E E; Harrigan T; Ophir J
Shear strain estimation and lesion mobility assessment in elastography.
Ultrasonics 2000;38(1-8):400-4.
2000: Alam S K; Ophir J; Varghese T
Elastographic axial resolution criteria: an experimental study.
IEEE transactions on ultrasonics, ferroelectrics, and frequency control 2000;47(1):304-9.
2000: Alam S K; Ophir J
The effect of nonlinear signal transformations on bias errors in elastography.
IEEE transactions on ultrasonics, ferroelectrics, and frequency control 2000;47(1):297-303.
1999: Konofagou E E; Varghese T; Ophir J; Alam S K
Power spectral strain estimators in elastography.
Ultrasound in medicine & biology 1999;25(7):1115-29.
1999: Righetti R; Kallel F; Stafford R J; Price R E; Krouskop T A; Hazle J D; Ophir J
Elastographic characterization of HIFU-induced lesions in canine livers.
Ultrasound in medicine & biology 1999;25(7):1099-113.
1999: Kallel F; Price R E; Konofagou E; Ophir J
Elastographic imaging of the normal canine prostate in vitro.
Ultrasonic imaging 1999;21(3):201-15.
1999: Kallel F; Stafford R J; Price R E; Righetti R; Ophir J; Hazle J D
The feasibility of elastographic visualization of HIFU-induced thermal lesions in soft tissues. Image-guided high-intensity focused ultrasound.
Ultrasound in medicine & biology 1999;25(4):641-7.
1999: Varghese T; Ophir J
A method for experimental characterization of the noise performance of elastographic systems.
Ultrasonic imaging 1999;21(1):17-30.
1999: Ophir J; Alam S K; Garra B; Kallel F; Konofagou E; Krouskop T; Varghese T
Elastography: ultrasonic estimation and imaging of the elastic properties of tissues.
Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine 1999;213(3):203-33.
1998: Stafford R J; Kallel F; Price R E; Cromeens D M; Krouskop T A; Hazle J D; Ophir J
Elastographic imaging of thermal lesions in soft tissue: a preliminary study in vitro.
Ultrasound in medicine & biology 1998;24(9):1449-58.
1998: Kallel F; Ophir J
Limits on the contrast of strain concentrations in elastography.
Ultrasound in medicine & biology 1998;24(8):1215-9.
1998: Konofagou E; Ophir J
A new elastographic method for estimation and imaging of lateral displacements, lateral strains, corrected axial strains and Poisson's ratios in tissues.
Ultrasound in medicine & biology 1998;24(8):1183-99.
1998: Varghese T; Ophir J
An analysis of elastographic contrast-to-noise ratio.
Ultrasound in medicine & biology 1998;24(6):915-24.
1998: Varghese T; Ophir J
Characterization of elastographic noise using the envelope of echo signals.
Ultrasound in medicine & biology 1998;24(4):543-55.
1998: Kallel F; Ophir J; Magee K; Krouskop T
Elastographic imaging of low-contrast elastic modulus distributions in tissue.
Ultrasound in medicine & biology 1998;24(3):409-25.
1998: Alam S K; Ophir J; Cespedes I; Varghese T
A deconvolution filter for improvement of time-delay estimation in elastography.
IEEE transactions on ultrasonics, ferroelectrics, and frequency control 1998;45(6):1565-72.
1998: Alam S K; Ophir J; Konofagou E E
An adaptive strain estimator for elastography.
IEEE transactions on ultrasonics, ferroelectrics, and frequency control 1998;45(2):461-72.
1997: Kallel F; Ophir J
A least-squares strain estimator for elastography.
Ultrasonic imaging 1997;19(3):195-208.
1997: Konofagou E E; Ophir J; Kallel F; Varghese T
Elastographic dynamic range expansion using variable applied strains.
Ultrasonic imaging 1997;19(2):145-66.
1997: Garra B S; Cespedes E I; Ophir J; Spratt S R; Zuurbier R A; Magnant C M; Pennanen M F
Elastography of breast lesions: initial clinical results.
Radiology 1997;202(1):79-86.
1997: Cespedes I; Ophir J; Alam S K
The combined effect of signal decorrelation and random noise on the variance of time delay estimation.
IEEE transactions on ultrasonics, ferroelectrics, and frequency control 1997;44(1):220-5.
1997: Alam S K; Ophir J
On the use of envelope and RF signal decorrelation as tissue strain estimators.
Ultrasound in medicine & biology 1997;23(9):1427-33.
1997: Kallel F; Varghese T; Ophir J; Bilgen M
The nonstationary strain filter in elastography: Part II. Lateral and elevational decorrelation.
Ultrasound in medicine & biology 1997;23(9):1357-69.
1997: Varghese T; Ophir J
The nonstationary strain filter in elastography: Part I. Frequency dependent attenuation.
Ultrasound in medicine & biology 1997;23(9):1343-56.
1997: Alam S K; Ophir J
Reduction of signal decorrelation from mechanical compression of tissues by temporal stretching: applications to elastography.
Ultrasound in medicine & biology 1997;23(1):95-105.
1996: Varghese T; Ophir J
Performance optimization in elastography: multicompression with temporal stretching.
Ultrasonic imaging 1996;18(3):193-214.
1996: Varghese T; Ophir J
Estimating tissue strain from signal decorrelation using the correlation coefficient.
Ultrasound in medicine & biology 1996;22(9):1249-54.
1996: Konofagou E; Dutta P; Ophir J; Céspedes I
Reduction of stress nonuniformities by apodization of compressor displacement in elastography.
Ultrasound in medicine & biology 1996;22(9):1229-36.
1996: Varghese T; Ophir J; Céspedes I
Noise reduction in elastograms using temporal stretching with multicompression averaging.
Ultrasound in medicine & biology 1996;22(8):1043-52.
1996: Kallel F; Bertrand M; Ophir J
Fundamental limitations on the contrast-transfer efficiency in elastography: an analytic study.
Ultrasound in medicine & biology 1996;22(4):463-70.
1995: Céspedes I; Huang Y; Ophir J; Spratt S
Methods for estimation of subsample time delays of digitized echo signals.
Ultrasonic imaging 1995;17(2):142-71.
1995: Ponnekanti H; Ophir J; Huang Y; Céspedes I
Fundamental mechanical limitations on the visualization of elasticity contrast in elastography.
Ultrasound in medicine & biology 1995;21(4):533-43.
1994: Ponnekanti H; Ophir J; Cespedes I
Ultrasonic imaging of the stress distribution in elastic media due to an external compressor.
Ultrasound in medicine & biology 1994;20(1):27-33.
1994: Belaïd N; Cespedes I; Thijssen J M; Ophir J
Lesion detection in simulated elastographic and echographic images: a psychophysical study.
Ultrasound in medicine & biology 1994;20(9):877-91.
1993: Céspedes I; Ophir J
Reduction of image noise in elastography.
Ultrasonic imaging 1993;15(2):89-102.
1993: Céspedes I; Ophir J; Ponnekanti H; Maklad N
Elastography: elasticity imaging using ultrasound with application to muscle and breast in vivo.
Ultrasonic imaging 1993;15(2):73-88.
1992: Céspedes I; Ophir J; Huang Y
On the feasibility of pulse-echo speed of sound estimation in small regions: simulation studies.
Ultrasound in medicine & biology 1992;18(3):283-91.
1992: Céspedes I; Ophir J
Correction of diffraction errors in attenuation estimation with Dynamic Beam Translation.
Ultrasound in medicine & biology 1992;18(2):213-8.
1992: Ponnekanti H; Ophir J; Cespedes I
Axial stress distributions between coaxial compressors in elastography: an analytical model.
Ultrasound in medicine & biology 1992;18(8):667-73.
1991: Ophir J; Moriya T; Yazdi Y
A single transducer transaxial compression technique for the estimation of sound speed in biological tissues.
Ultrasonic imaging 1991;13(3):269-79.
1991: Ophir J; Céspedes I; Ponnekanti H; Yazdi Y; Li X
Elastography: a quantitative method for imaging the elasticity of biological tissues.
Ultrasonic imaging 1991;13(2):111-34.
1990: Ophir J; Yazdi Y
A transaxial compression technique (TACT) for localized pulse-echo estimation of sound speed in biological tissues.
Ultrasonic imaging 1990;12(1):35-46.
1990: Céspedes I; Ophir J
Diffraction correction methods for pulse-echo acoustic attenuation estimation.
Ultrasound in medicine & biology 1990;16(7):707-17.
1989: Ophir J; Johnson W; Yazdi Y; Shattuck D; Mehta D
Correlation artifacts in speed of sound estimation in scattering media.
Ultrasound in medicine & biology 1989;15(4):341-53.
1989: Shattuck D P; Ophir J; Johnson G W; Yazdi Y; Mehta D
Correction of refraction and other angle errors in beam tracking speed of sound estimations using multiple tracking transducers.
Ultrasound in medicine & biology 1989;15(7):673-81.
1989: Ophir J; Parker K J
Contrast agents in diagnostic ultrasound.
Ultrasound in medicine & biology 1989;15(4):319-33.
1988: Ophir J; Mehta D
Elimination of diffraction error in acoustic attenuation estimation via axial beam translation.
Ultrasonic imaging 1988;10(2):139-52.
1988: Lin T; Ophir J; Potter G
Correlation of ultrasonic attenuation with pathologic fat and fibrosis in liver disease.
Ultrasound in medicine & biology 1988;14(8):729-34.
1987: Lin T; Ophir J; Potter G
Frequency-dependent ultrasonic differentiation of normal and diffusely diseased liver.
The Journal of the Acoustical Society of America 1987;82(4):1131-8.
1987: Lin T; Ophir J; Potter G
Correlations of sound speed with tissue constituents in normal and diffuse liver disease.
Ultrasonic imaging 1987;9(1):29-40.

Sign-in to see more