Jonathan Ophir

Jonathan Ophir

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Jonathan Ophir

Jonathan Ophir

Publications by authors named "Jonathan Ophir"

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39Publications

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Small breast lesion classification performance using the normalized axial-shear strain area feature.

Ultrasound Med Biol 2013 Mar 11;39(3):543-8. Epub 2013 Jan 11.

The University of Texas Medical School, Department of Diagnostic and Interventional Imaging, Ultrasonics and Elastographics Laboratory, Houston, Texas 77030, USA.

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http://dx.doi.org/10.1016/j.ultrasmedbio.2012.10.011DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3587118PMC
March 2013

On the advantages of imaging the axial-shear strain component of the total shear strain in breast tumors.

Ultrasound Med Biol 2012 Nov 10;38(11):2031-7. Epub 2012 Sep 10.

Department of Diagnostic and Interventional Imaging, Ultrasonics and Elastographics Laboratory, The University of Texas Medical School, Houston, TX, USA.

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http://dx.doi.org/10.1016/j.ultrasmedbio.2012.06.011DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3463720PMC
November 2012

Visualization of HIFU-induced lesion boundaries by axial-shear strain elastography: a feasibility study.

Ultrasound Med Biol 2011 Mar 26;37(3):426-33. Epub 2011 Jan 26.

The University of Texas Medical School, Department of Diagnostic and Interventional Imaging, Ultrasonics Laboratory, Houston, TX 77030, USA.

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http://dx.doi.org/10.1016/j.ultrasmedbio.2010.11.009DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3051355PMC
March 2011

Axial-shear strain elastography for breast lesion classification: further results from in vivo data.

Ultrasound Med Biol 2011 Feb 5;37(2):189-97. Epub 2011 Jan 5.

Department of Diagnostic and Interventional Imaging, The University of Texas Medical School, Houston, TX 77030, USA.

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http://dx.doi.org/10.1016/j.ultrasmedbio.2010.11.001DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3072057PMC
February 2011

Importance of axial compression verification to correct interpretation of axial-shear strain elastograms in breast lesions.

Ultrason Imaging 2010 Jul;32(3):190-8

The University of Texas Medical School, Department of Diagnostic and Interventional Imaging, Ultrasonics Laboratory, Houston, TX, USA.

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http://dx.doi.org/10.1177/016173461003200306DOI Listing
July 2010

Axial-shear strain distributions in an elliptical inclusion model: experimental validation and in vivo examples with implications to breast tumor classification.

Ultrasound Med Biol 2010 May;36(5):814-20

The University of Texas Medical School, Department of Diagnostic and Interventional Imaging, Houston, TX 77030, USA.

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http://dx.doi.org/10.1016/j.ultrasmedbio.2010.02.004DOI Listing
May 2010

Breast tumor classification using axial shear strain elastography: a feasibility study.

Phys Med Biol 2008 Sep 13;53(17):4809-23. Epub 2008 Aug 13.

Department of Diagnostic and Interventional Imaging, Ultrasonics Laboratory, The University of Texas Medical School, 6431 Fannin St, Houston, TX 77030, USA.

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http://dx.doi.org/10.1088/0031-9155/53/17/022DOI Listing
September 2008

On the differences between two-dimensional and three-dimensional simulations for assessing elastographic image quality: a simulation study.

Ultrasound Med Biol 2008 Jul 14;34(7):1129-38. Epub 2008 Mar 14.

University of Texas Medical School, Department of Diagnostic and Interventional Imaging, Ultrasonics Laboratory, Houston, TX, USA.

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http://dx.doi.org/10.1016/j.ultrasmedbio.2007.12.007DOI Listing
July 2008

The feasibility of using poroelastographic techniques for distinguishing between normal and lymphedematous tissues in vivo.

Phys Med Biol 2007 Nov 16;52(21):6525-41. Epub 2007 Oct 16.

Department of Diagnostic and Interventional Imaging, Ultrasonics Laboratory, The University of Texas Medical School, Houston, TX, USA.

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http://stacks.iop.org/0031-9155/52/i=21/a=013?key=crossref.f
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http://dx.doi.org/10.1088/0031-9155/52/21/013DOI Listing
November 2007

Effect of lesion boundary conditions on axial strain elastograms: a parametric study.

Ultrasound Med Biol 2007 Sep 11;33(9):1463-7. Epub 2007 Jun 11.

The University of Texas Medical School, Department of Diagnostic and Interventional Imaging, Ultrasonics Laboratory, Houston, TX 77030, USA.

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http://dx.doi.org/10.1016/j.ultrasmedbio.2007.03.011DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2679747PMC
September 2007

The feasibility of estimating and imaging the mechanical behavior of poroelastic materials using axial strain elastography.

Phys Med Biol 2007 Jun 15;52(11):3241-59. Epub 2007 May 15.

Ultrasonics Laboratory, Department of Radiology, The University of Texas Medical School, 6431 Fannin St., Houston, TX 77030, USA.

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http://dx.doi.org/10.1088/0031-9155/52/11/020DOI Listing
June 2007

Visualization of bonding at an inclusion boundary using axial-shear strain elastography: a feasibility study.

Phys Med Biol 2007 May 17;52(9):2615-33. Epub 2007 Apr 17.

Department of Diagnostic and Interventional Imaging, The University of Texas Medical School, Ultrasonics Laboratory, Houston, TX, USA.

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http://stacks.iop.org/0031-9155/52/i=9/a=019?key=crossref.fd
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http://dx.doi.org/10.1088/0031-9155/52/9/019DOI Listing
May 2007

Assessing image quality in effective Poisson's ratio elastography and poroelastography: I.

Phys Med Biol 2007 Mar 8;52(5):1303-20. Epub 2007 Feb 8.

The University of Texas Medical School, Department of Diagnostic and Interventional Imaging, Ultrasonics Laboratory, Houston, TX, USA.

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http://dx.doi.org/10.1088/0031-9155/52/5/007DOI Listing
March 2007

Assessing image quality in effective Poisson's ratio elastography and poroelastography: II.

Phys Med Biol 2007 Mar 8;52(5):1321-33. Epub 2007 Feb 8.

Department of Diagnostic and Interventional Imaging, The University of Texas Medical School, Ultrasonics Laboratory, Houston, TX, USA.

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http://dx.doi.org/10.1088/0031-9155/52/5/008DOI Listing
March 2007

Signal-to-noise ratio, contrast-to-noise ratio and their trade-offs with resolution in axial-shear strain elastography.

Phys Med Biol 2007 Jan 4;52(1):13-28. Epub 2006 Dec 4.

The University of Texas Medical School, Department of Diagnostic and Interventional Imaging, Ultrasonics Laboratory, Houston, TX, USA.

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http://dx.doi.org/10.1088/0031-9155/52/1/002DOI Listing
January 2007

Resolution of axial shear strain elastography.

Phys Med Biol 2006 Oct 27;51(20):5245-57. Epub 2006 Sep 27.

Ultrasonics Laboratory, Department of Diagnostic and Interventional Imaging, The University of Texas Medical School, Houston, TX, USA.

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http://dx.doi.org/10.1088/0031-9155/51/20/011DOI Listing
October 2006

Comparison of shift estimation strategies in spectral elastography.

Ultrasonics 2006 Jan 28;44(1):99-108. Epub 2005 Sep 28.

Department of Radiology, Thomas Jefferson University, Philadelphia, PA 19107, USA.

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http://dx.doi.org/10.1016/j.ultras.2005.08.006DOI Listing
January 2006

Enhancing the performance of model-based elastography by incorporating additional a priori information in the modulus image reconstruction process.

Phys Med Biol 2006 Jan 15;51(1):95-112. Epub 2005 Dec 15.

Dartmouth Medical School, Dartmouth College, Hanover, NH 03766, USA.

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http://dx.doi.org/10.1088/0031-9155/51/1/007DOI Listing
January 2006

Analysis of a hybrid spectral strain estimation technique in elastography.

Phys Med Biol 2006 Jan 21;51(2):197-209. Epub 2005 Dec 21.

Department of Radiology, Thomas Jefferson University, Philadelphia, PA 19107, USA.

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http://dx.doi.org/10.1088/0031-9155/51/2/001DOI Listing
January 2006

A new method for generating poroelastograms in noisy environments.

Ultrason Imaging 2005 Oct;27(4):201-20

The University of Texas Medical School, Department of Diagnostic and Interventional Imaging, Ultrasonics Laboratory, 6431 Fannin St. Houston, TX 77030, USA.

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http://uix.sagepub.com/content/27/4/201.full.pdf
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http://dx.doi.org/10.1177/016173460502700401DOI Listing
October 2005

Investigation of parametric spectral estimation techniques for elasticity imaging.

Ultrasound Med Biol 2005 Aug;31(8):1109-21

Department of Radiology, Thomas Jefferson University, Philadelphia, PA, USA.

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http://linkinghub.elsevier.com/retrieve/pii/S030156290500189
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http://dx.doi.org/10.1016/j.ultrasmedbio.2005.04.013DOI Listing
August 2005

Noise performance and signal-to-noise ratio of shear strain elastograms.

Ultrason Imaging 2005 Jul;27(3):145-65

The University of Texas Medical School, Department of Diagnostic and Interventional Imaging, Ultrasonics Laboratory, Houston 77030, USA.

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http://dx.doi.org/10.1177/016173460502700302DOI Listing
July 2005

Comparative evaluation of strain-based and model-based modulus elastography.

Ultrasound Med Biol 2005 Jun;31(6):787-802

Department of Radiology, Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA.

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http://dx.doi.org/10.1016/j.ultrasmedbio.2005.02.005DOI Listing
June 2005

A method for generating permeability elastograms and Poisson's ratio time-constant elastograms.

Ultrasound Med Biol 2005 Jun;31(6):803-16

Department of Radiology, Ultrasonics Laboratory, The University of Texas Medical School, Houston, TX 77030, USA.

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http://dx.doi.org/10.1016/j.ultrasmedbio.2005.02.004DOI Listing
June 2005

In vivo elastographic investigation of ethanol-induced hepatic lesions.

Ultrasound Med Biol 2005 May;31(5):607-12

Department of Radiology, Thomas Jefferson University, Philadelphia, PA 19107, USA.

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http://dx.doi.org/10.1016/j.ultrasmedbio.2005.01.017DOI Listing
May 2005

Tissue displacements during acupuncture using ultrasound elastography techniques.

Ultrasound Med Biol 2004 Sep;30(9):1173-83

Department of Neurology, University of Vermont, Burlington, VT, USA.

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http://dx.doi.org/10.1016/j.ultrasmedbio.2004.07.010DOI Listing
September 2004

Comparing elastographic strain images with modulus images obtained using nanoindentation: preliminary results using phantoms and tissue samples.

Ultrasound Med Biol 2004 Mar;30(3):329-43

The University of Texas Medical School, Department of Radiology, Ultrasonics Laboratory, Houston, TX 77030, USA.

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http://dx.doi.org/10.1016/j.ultrasmedbio.2003.10.021DOI Listing
March 2004

The feasibility of using elastography for imaging the Poisson's ratio in porous media.

Ultrasound Med Biol 2004 Feb;30(2):215-28

The University of Texas Medical School, Department of Radiology, Ultrasonics Laboratory, Houston, TX 77030, USA.

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http://dx.doi.org/10.1016/j.ultrasmedbio.2003.10.022DOI Listing
February 2004

Elastography imaging of small animal oncology models: a feasibility study.

Ultrasound Med Biol 2003 Sep;29(9):1291-6

Department of Radiology, University of Texas at Houston Medical School, Houston, TX, USA.

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http://dx.doi.org/10.1016/s0301-5629(03)01013-5DOI Listing
September 2003

Differences in the compressive stress-strain response of infiltrating ductal carcinomas with and without lobular features--implications for mammography and elastography.

Ultrason Imaging 2003 Jul;25(3):162-70

Department of Physical Medicine & Rehabilitation, Baylor College of Medicine Houston, TX 77030, USA.

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http://dx.doi.org/10.1177/016173460302500304DOI Listing
July 2003

Lateral resolution in elastography.

Ultrasound Med Biol 2003 May;29(5):695-704

The University of Texas Medical School, Department of Radiology, Ultrasonics Laboratory, Houston, TX 77030, USA.

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http://dx.doi.org/10.1016/s0301-5629(03)00028-0DOI Listing
May 2003

Dynamic measurement of internal solid displacement in articular cartilage using ultrasound backscatter.

J Biomech 2003 Mar;36(3):443-7

Department of Chemical Engineering, Institute of Biomedical Engineering, Ecole Polytechnique de Montreal, P.O.Box 6079, Station Centre-Ville, Que., H3C 3A7, Montreal, Canada.

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http://dx.doi.org/10.1016/s0021-9290(02)00413-xDOI Listing
March 2003

Ultrasonic elastography using sector scan imaging and a radial compression.

Ultrasonics 2002 May;40(1-8):867-71

INSERM Unité 556, Lyon, France.

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May 2002

Myocardial elastography--a feasibility study in vivo.

Ultrasound Med Biol 2002 Apr;28(4):475-82

Focused Ultrasound Laboratory, Department of Radiology-MRI research, Brigham and Women's Hospital, Harvard Medical School, LMRC #013, 221 Longwood Avenue, Boston, MA 02115, USA.

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http://dx.doi.org/10.1016/s0301-5629(02)00488-xDOI Listing
April 2002

Variational method for estimating the effects of continuously varying lenses in HIFU, sonography, and sonography-based cross-correlation methods.

J Acoust Soc Am 2002 Jan;111(1 Pt 1):468-74

The University of Texas Medical School, Department of Radiology, Houston 77030, USA.

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http://dx.doi.org/10.1121/1.1424867DOI Listing
January 2002

Axial resolution in elastography.

Ultrasound Med Biol 2002 Jan;28(1):101-13

The University of Texas Medical School, Department of Radiology, Ultrasonics Laboratory, 6431 Fannin St., Houston, TX 77030, USA.

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http://dx.doi.org/10.1016/s0301-5629(01)00495-1DOI Listing
January 2002