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Tomy Varghese, Ph.D.

Position:		Associate Professor

Address:		Department of Medical Physics University of Wisconsin-Madison 1159 WIMR, 1111 Highland Avenue Madison, WI 53705-2275

Email:		tvarghese@wisc.edu
Phone:		(608) 265-8797
Fax:		(608) 262-2413

Education

Ph.D., Electrical Engineering, University of Kentucky, 1995.
M.S., Electrical Engineering, University of Kentucky, 1992.
B.E., Instrumentation Technology, University of Mysore, India, 1988.

Professional Affiliations

Senior Member, Institute of Electrical and Electronics Engineers (IEEE)
Member, American Association of Physicists in Medicine (AAPM)
Senior Member, American Institute of Ultrasound in Medicine (AIUM)
Associate Member, Indian Institute of Engineers (AMIE)

Research Interests

Post Doctoral Research Associates

Graduate Students

Matthew McCormick Doctoral Dissertation: Carotid Plaque Characterization with Medical Ultrasound, University of Wisconsin-Madison, Expected 2010. Download/ View PDF Format (999 KB)
Ryan DeWall Doctoral Dissertation: Tissue Modulus Imaging Using Radio-Frequency Electrode Vibration, University of Wisconsin-Madison, Expected 2011. Download/ View PDF Format (999 KB)
Nick Rubert
Haiyan Xu
Eenas Omari
Chi Ma
Wenqi Ge
Kayvan Samimi

Graduated Students with Doctoral Degree (Ph.D)

Udomchai Techavipoo, Ph.D Doctoral Dissertation: Ultrasound Elastographic Imaging of Thermal Lesions and Temperature Profiles During Radiofrequency Ablation, University of Wisconsin-Madison, 2004. Download/ View PDF Format (999 KB)
Hairong Shi, Ph.D Doctoral Dissertation: Atherosclerotic Carotid Plaque Characterization using Ultrasound and Elastography, University of Wisconsin-Madison, 2007. Download/ View PDF Format (999 KB)
Wu Liu, Ph.D Doctoral Dissertation: In-vivo ultrasound scatterer size Imaging on Liver Tumors with a Clinical Scanner, University of Wisconsin-Madison, 2007. Download/ View PDF Format (999 KB) Advisors: James A. Zagzebski, Tomy Varghese
Matthew J. Daniels, Ph.D Doctoral Dissertation: Ultrasound Temperature Imaging, University of Wisconsin-Madison, June 2008. Download/ View PDF Format (999 KB)
Maritza A. Hobson, Ph.D Doctoral Dissertation: Prospects for Effective Uterine & Cervical Elastography, University of Wisconsin-Madison, June 2008. Download/ View PDF Format (999 KB) Advisors: Ernest L. Madsen, Tomy Varghese
Min Rao, Ph.D Doctoral Dissertation: Shear Strain Imaging for Breast Cancer Diagnosis, University of Wisconsin-Madison, July 2008. Download/ View PDF Format (999 KB)
Hyungsuk Kim, Ph.D Doctoral Dissertation: Novel Signal Processing methods for Ultrasonic Attenuation Imaging, University of Wisconsin-Madison, August 2008. Download/ View PDF Format (999 KB)
Shyam Bharat, Ph.D Doctoral Dissertation: Electrode Displacement Strain Imaging for Thermally Ablative Therapies, University of Wisconsin-Madison, January 2009. Download/ View PDF Format (999 KB)
Hao Chen Doctoral Dissertation: Cardiac Strain Imaging, University of Wisconsin-Madison, May 2009. Download/ View PDF Format (999 KB)

Graduated Students with Masters Degree (M.S.)

Hairong Shi, M.S.
Wu Liu, M.S. Advisors: James A. Zagzebski, Tomy Varghese
Maritza A. Hobson, M.S. Advisors: Ernest L. Madsen, Tomy Varghese
Shyam Bharat, M.S.
Matthew McCormick, M.S.

Previous Post Doctoral Research Associates

Miklos Z Kiss, Ph.D

Clinical Research Collaborators

Robert Dempsey, M.D., Professor and Chair, Department of Neurological Surgery
Mark Kliewer, M.D. Professor, Department of Radiology
Fred Lee, Jr., M.D. Professor, Department of Radiology
Gale A. Sisney, M.D. Professor, Department of Radiology
Peter Rahko, M.D., Associate Professor, Department of Medicine, Cardiovascular Medicine
Shariar Salamat, M.D., Professor, Department of Pathology
Thomas Warner, M.D., Professor, Department of Pathology
Mathew Wolff, M.D. Associate Professor, Department of Medicine, Cardiovascular Medicine
Giorgio Gimelli, M.D. Assistant Professor, Department of Medicine, Cardiovascular Medicine

Awards & Honors

Sigma Xi Research Day Best Poster Award: J. Ophir, E. E. Konofagou, Tomy Varghese, F. Kallel, S. K. Alam, and I. CšŠspedes, "Elastography: A quantitative method for imaging the elasticity of biological tissue", April 3, University of Houston, 1997.

Member, Eta Kappa Nu, (Electrical Engineering Honor Society)

Outstanding Teacher evaluation,Letter of appreciation, Dean, University of Kentucky, Lexington, KY, 1994

Recipient, Raja Ramanna Gold Medal, Best Outgoing Student, in Instrumentation Technology, University of Mysore, Mysore, India, 1988

Patents

Tomy Varghese , C.S. Breburda, J.A. Zagzebski, P. S. Rahko, Method and Apparatus for Cardiac Elastography, Patent No. US 6,749,571 B2, June 15, 2004. Download/ View PDF Format (502 KB)
Tomy Varghese , J.A. Zagzebski, U. Techavipoo and Q. Chen, Elastographic Imaging of In-vivo soft tissue. US patent No. 7,166,075, January 23, 2007. Download/ View PDF Format (728 KB)
Tomy Varghese , M.A. Kliewer, J.A. Zagzebski, Method and apparatus for imaging the cervix and uterine wall, US Patent No. 7,297,116, 2007. Download/ View PDF Format (801 KB)
J.A. Zagzebski, Tomy Varghese , A. Gerig, Parametric Ultrasound Imaging Using Angular Compounding. US patent No.7,275,439, 2007. Download/ View PDF Format (770 KB)
Tomy Varghese , U. Techavipoo, Q. Chen, and J.A. Zagzebski, "Ultrasonic elastography providing axial, orthogonal, and shear strain", US Patent No. 7,331,926, 2008. Download/ View PDF Format (770 KB)

Funded Research

Strain Imaging of Tumor Ablation

Normal and Shear Strain Imaging

Characterization of Carotid Atherosclerotic Plaque

Cardiac Strain Imaging

Selected Publications

For a complete publication list, click here

Please note: "Abstract" links will open a new browser window

Tomy Varghese, and K. D. Donohue, Mean scatterer spacing estimates with spectral correlation, Journal of the Acoustical Society America, Vol. 96, No. 6, pp. 3504-3515, 1994. [Abstract]
Tomy Varghese, and J. Ophir, A theoretical framework for performance characterization of elastography: The strain filter, IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control, Vol. 44, No. 1, pp. 164-172, 1997. [Abstract]
J. Ophir, F. Kallel, Tomy Varghese, M. Bertrand, I. CšŠspedes and H. Ponnekanti, Elastography: A systems approach, Invited paper & Review, The International Journal of Imaging Systems and Technology, John Wiley & Sons, Inc, Vol. 8, pp. 89-103, 1997. [Abstract]
Tomy Varghese, M. Bilgen, and J. Ophir, Multiresolution imaging in elastography, IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control, Vol. 45, No. 1, pp. 65-75, 1998. [Abstract]
Tomy Varghese, and J. Ophir, A method for the experimental characterization of the noise performance of elastographic systems, Ultrasonic Imaging, Vol. 21, No. 1, pp. 17-30, 1999. [Abstract]
Tomy Varghese, J. Ophir, and T A. Krouskop Non-linear stress-strain relationships in tissue and their effect on the contrast-to-noise ratio in elastograms, Ultrasound in Medicine and Biology, Vol. 26, No. 5, pp. 839-851, 2000. [Abstract]
Tomy Varghese, E. E. Konofagou, J. Ophir, S. K. Alam and M. Bilgen, Direct strain estimation in elastography using spectral cross-correlation, Ultrasound in Medicine and Biology, Vol. 26, No. 9, pp. 1525-1537, 2000. [Abstract]
J. Ophir, F. Kallel, Tomy Varghese, E. Konofagou, K. Alam, T. Krouskop, B. Garra and R. Righetti, Elastography, Invited paper & Review, Journal of the French Academy of Sciences, Series IV, Tome. 2 (8), pp. 1193-1212, 2001. [Abstract]
Tomy Varghese, J. Ophir, E. E. Konofagou, F. Kallel, R. Righetti, Tradeoffs In Elastographic Imaging, Ultrasonic Imaging, Vol. 23, 216-248, 2001. [Abstract]
Tomy Varghese, J.A. Zagzebski, Q. Chen, U. Techavipoo, G. Frank, C. Johnson, A. Wright and F.T. Lee Jr., Ultrasound monitoring of temperature change during radio frequency ablation: Preliminary in-vivo results, Ultrasound in Medicine and Biology, Vol. 28, No. 3, pp. 321-329, 2002. [Abstract]
Tomy Varghese, J.A. Zagzebski and F.T. Lee Jr., Elastographic Imaging of thermal lesions in the liver in-vivo following radiofrequency ablation: Preliminary Results, Ultrasound in Medicine and Biology, Vol. 28, No. 11/12, pp. 1467-1473, 2002. [Abstract]
U. Techavipoo, Tomy Varghese, J.A. Zagzebski, T.A. Stiles and G. Frank, Temperature Dependence of Ultrasonic Propagation Speed and Attenuation in Canine Tissue, Ultrasonic Imaging, Vol. 24, pp. 246-260, 2002. [Abstract]
Tomy Varghese, J.A. Zagzebski, P. Rahko, and C.S. Breburda, Ultrasonic imaging of myocardial strain using cardiac elastography, Ultrasonic Imaging, Vol. 25, No. 1, pp. 1-16, 2003. [Abstract]
Tomy Varghese, U. Techavipoo, W. Liu, J.A. Zagzebski, Q. Chen, G. Frank and F.T. Lee Jr., Elastographic measurement of the area and volume of thermal lesions resulting from radiofrequency ablation: pathologic correlation, AJR, Vol. 181, No. 3, pp. 701-707, 2003. [Abstract]
U. Techavipoo, Q. Chen, Tomy Varghese, J.A. Zagzebski, and E.L. Madsen, Noise Reduction Using Spatial-Angular Compounding for Elastography, IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control, Vol. 51, No. 5, pp. 510-520, 2004. [Abstract]
U.Techavipoo, Q. Chen, Tomy Varghese, and J.A. Zagzebski, Estimation of Displacement Vectors and Strain Tensors in Elastography Using Angular Insonifications, IEEE Transactions on Medical Imaging, Vol. 23, No. 12, pp. 1479-1489, 2004. [Abstract]

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