Richard Lorne Ehman, MD

  • 21710 Citations
  • 74 Scopus h-Index
1983 …2019
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Research Output 1983 2019

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Conference contribution
2017
1 Citation (Scopus)

Automated liver elasticity calculation for 3D MRE

Dzyubak, B., Glaser, K. J., Manduca, A. & Ehman, R. L., 2017, Medical Imaging 2017: Computer-Aided Diagnosis. SPIE, Vol. 10134. 101340Y

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Elasticity Imaging Techniques
Elasticity
Magnetic resonance
liver
Liver
3 Citations (Scopus)

Comparison of shear velocity dispersion in viscoelastic phantoms measured by ultrasound-based shear wave elastography and magnetic resonance elastography

Urban, M. W., Chen, J. & Ehman, R. L., Oct 31 2017, 2017 IEEE International Ultrasonics Symposium, IUS 2017. IEEE Computer Society, 8092418

Research output: Chapter in Book/Report/Conference proceedingConference contribution

S waves
magnetic resonance
shear
biomarkers
liver
1 Citation (Scopus)

Comparison of shear velocity dispersion in viscoelastic phantoms measured by ultrasound-based shear wave elastography and magnetic resonance elastography

Urban, M. W., Chen, J. & Ehman, R. L., Oct 31 2017, 2017 IEEE International Ultrasonics Symposium, IUS 2017. IEEE Computer Society, 8091625

Research output: Chapter in Book/Report/Conference proceedingConference contribution

S waves
magnetic resonance
shear
biomarkers
fibrosis

Invivo assessment of systolic and diastolic myocardial stiffness in pigs using 3d cardiac magnetic resonance elastography

Arunachalam, S. P., Forghanian-Arani, A., Glaser, K. J., Ehman, R. L. & Araoz, P. A., Jan 1 2017, 54th Annual Rocky Mountain Bioengineering Symposium, RMBS 2017 and 54th International ISA Biomedical Sciences Instrumentation Symposium 2017. International Society of Automation (ISA), Vol. 2017-March.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Elasticity Imaging Techniques
swine
Magnetic resonance
magnetic resonance
stiffness
2015

MRI & mechanobiology: New science at the intersection of engineering and medicine

Ehman, R. L., 2015, Progress in Biomedical Optics and Imaging - Proceedings of SPIE. SPIE, Vol. 9327. 932702-1

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Biophysics
Elasticity Imaging Techniques
Magnetic resonance
medicine
Magnetic resonance imaging
2013
65 Citations (Scopus)

RSNA/QIBA: Shear wave speed as a biomarker for liver fibrosis staging

Hall, T. J., Milkowski, A., Garra, B., Carson, P., Palmeri, M., Nightingale, K., Lynch, T., Alturki, A., Andre, M., Audiere, S., Bamber, J., Barr, R., Bercoff, J., Bercoff, J., Bernal, M., Brum, J., Chan, H. W., Chen, S. D., Cohen-Bacrie, C., Couade, M. & 36 others, Daniels, A., Dewall, R., Dillman, J., Ehman, R. L., Franchi-Abella, S., Fromageau, J., Gennisson, J. L., Henry, J. P., Ivancevich, N., Kalin, J., Kohn, S., Kugel, J., Lee, K., Liu, N., Loupas, T., Mazernik, J., McAleavey, S., Miette, V., Metz, S., Morel, B., Nelson, T., Nordberg, E., Oudry, J., Padwal, M., Rouze, N., Samir, A., Sandrin, L., Schaccitti, J., Schmitt, C., Shamdasani, V., Song, P., Switalski, P., Wang, M., Wear, K., Xie, H. & Zhao, H., 2013, IEEE International Ultrasonics Symposium, IUS. p. 397-400 4 p. 6725226

Research output: Chapter in Book/Report/Conference proceedingConference contribution

fibrosis
biomarkers
liver
S waves
2 Citations (Scopus)

Stable automated segmentation of liver MR elastography images for clinical stiffness measurement

Dzyubak, B., Venkatesh, S. K., Glaser, K., Yin, M., Talwalkar, J., Chen, J., Manduca, A. & Ehman, R. L., 2013, Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 8672. 86721I

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Elasticity Imaging Techniques
liver
Liver
stiffness
Stiffness
2007
1 Citation (Scopus)

Magnetic resonance elastography with twin pneumatic drivers for wave compensation

Zheng, Y., Li, G., Chen, M., Chan, Q. C. C., Hu, S. G., Zhao, X. N., Ehman, R. L., Lam, E. Y. & Yang, E. S., 2007, Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. IEEE Computer Society, p. 2611-2613 3 p. 4352864

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Magnetic resonance
Pneumatics
Shear waves
Tissue
Wave interference

Time reversal principles for wave optimization in multiple driver magnetic resonance elastography

Mariappan, Y. K., Manduca, A. & Ehman, R. L., 2007, Progress in Biomedical Optics and Imaging - Proceedings of SPIE. PART 1 ed. Vol. 6511. 651119

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Magnetic resonance
Transducers
Shear waves
Wave propagation
Acoustics
2006

Imaging mechanical properties of hepatic tissue by magnetic resonance elastography

Yin, M., Rouviere, O., Burgart, L. J., Fidler, J. L., Manduca, A. & Ehman, R. L., 2006, Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 6143 I. 61430Z

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Shear waves
Magnetic resonance
Liver
Tissue
Imaging techniques

Magnetic resonance elastography assesment of focused ultrasound surgery in cancer models - A pilot study

Primak, S. V., Glaser, K. J., Lai, J., Rossman, P. J., Le, Y., Reynolds, C. A., Roberts, L. R., Felmlee, J. P. & Ehman, R. L., 2006, American Society of Mechanical Engineers, Bioengineering Division (Publication) BED. American Society of Mechanical Engineers (ASME)

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Magnetic resonance
Surgery
Ultrasonics
Tissue
Tumors

Simultaneous temperature and tissue stiffness detection by mr elastography

Le, Y., Rouviere, O., Ehman, R. L. & Felmlee, J. P., May 8 2006, AIP Conference Proceedings. Vol. 829. p. 151-155 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

stiffness
thermometers
temperature
proton resonance
frequency shift
4 Citations (Scopus)

Study of shear wave displacement change measured by 1D MRE during focused ultrasound treatment: Preliminary study

Le, Y., Glaser, K., Romano, A., Manduca, A., Lai, J., Roberts, L. R., Primak, S., Ehman, R. L. & Felmlee, J. P., May 8 2006, AIP Conference Proceedings. Vol. 829. p. 186-190 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

surgery
S waves
breast
mice
tumors
16 Citations (Scopus)

Variance controlled shear stiffness images for MRE data

Mclaughlin, J., Renzi, D., Yoon, J. R., Ehman, R. L. & Manduca, A., 2006, 2006 3rd IEEE International Symposium on Biomedical Imaging: From Nano to Macro - Proceedings. Vol. 2006. p. 960-963 4 p. 162579

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Helmholtz equation
Shear waves
Magnetic resonance
Stiffness
Derivatives
2005

The effect of boundary conditions on dispersive and non-dispersive systems using magnetic resonance elastography and finite element analysis

Chen, Q., Ringleb, S. I., Manduca, A., Ehman, R. L. & An, K. N., 2005, Proceedings of the 2005 Summer Bioengineering Conference. Vol. 2005. p. 265-266 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Magnetic resonance
Boundary conditions
Finite element method
2004

Image space automatic motion correction for MRI images

Manduca, A., Lake, D. S., Khaylova, N. & Ehman, R. L., 2004, Proceedings of SPIE - The International Society for Optical Engineering. Fitzpatrick, J. M. & Sonka, M. (eds.). Vol. 5370 I. p. 390-397 8 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Fast Fourier transforms
Magnetic resonance imaging
Image quality
fast Fourier transformations
iteration

MR imaging of shear waves induced by moving needle

Chan, Q. C. C., Li, G., Ehman, R. L., Grimm, R. C., Cao, G., Li, R. & Yang, E. S., 2004, Proceedings of the Second IASTED International Conference on Biomechanics. Hamza, M. H. (ed.). p. 22-24 3 p. 463-054

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Acupuncture
Shear waves
Needles
Magnetic resonance
Imaging techniques
3 Citations (Scopus)

Shear waves induced by moving needle in MR Elastography

Chan, Q. C. C., Li, G., Ehman, R. L., Rossman, P. J., Cao, G., Li, R. & Yang, E. S., 2004, Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. Vol. 26 II. p. 1022-1024 3 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Acupuncture
Shear waves
Needles
Magnetic resonance
Gels
5 Citations (Scopus)

Transient MR elastography: Modeling traumatic brain injury

McCracken, P., Manduca, A., Felmlee, J. P. & Ehman, R. L., 2004, Lecture Notes in Computer Science. Barillot, C., Haynor, D. R. & Hellier, P. (eds.). 1 PART 2 ed. Vol. 3217. p. 1081-1082 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Brain
Biomechanics
Imaging techniques
2 Citations (Scopus)

Using magnetic resonance elastography to assess the dynamic mechanical properties of cartilage

Lopez, O., Amrami, K., Rossman, P. & Ehman, R. L., 2004, Proceedings of SPIE - The International Society for Optical Engineering. Amini, A. A. & Mandura, A. (eds.). Vol. 5369. p. 51-61 11 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

cartilage
Cartilage
Magnetic resonance
magnetic resonance
mechanical properties
2003
6 Citations (Scopus)

Improved inversion of MR elastography images by spatio-temporal directional filtering

Manduca, A., Lake, D. S. & Ehman, R. L., 2003, Proceedings of SPIE - The International Society for Optical Engineering. Sonka, M. & Fitzpatrick, J. M. (eds.). Vol. 5032 I. p. 445-452 8 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Elastic moduli
attenuation
inversions
shear
Wave interference
2002

An inversion method for the determination of elastic moduli in tissue using magnetic resonance elastography

Romano, A. J., Bucaro, J. A. & Ehman, R. L., 2002, Proceedings - International Symposium on Biomedical Imaging. IEEE Computer Society, Vol. 2002-January. p. 1009-1010 2 p. 1029434

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Elasticity Imaging Techniques
Elastic Modulus
Elasticity
Magnetic resonance
Elastic moduli
10 Citations (Scopus)

Characterization and evaluation of inversion algorithms for MR elastography

Manduca, A., Oliphant, T. E., Lake, D. S., Dresner, M. A. & Ehman, R. L., 2002, Proceedings of SPIE - The International Society for Optical Engineering. Sonka, M. & Michael Fitzpatrick, J. (eds.). Vol. 4684 II. p. 1180-1185 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

inversions
matched filters
evaluation
Matched filters
Magnetic resonance
1 Citation (Scopus)

Comparative evaluation of inversion algorithms for magnetic resonance elastography

Manduca, A., Oliphant, T. E., Dresner, M. A., Lake, D. S., Greenleaf, J. F. & Ehman, R. L., 2002, Proceedings - International Symposium on Biomedical Imaging. IEEE Computer Society, Vol. 2002-January. p. 997-1000 4 p. 1029431

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Elasticity Imaging Techniques
Magnetic resonance
Tissue
Shear waves
Elasticity
2 Citations (Scopus)

Spatio-temporal directional filtering for improved inversion of MR elastography images

Manduca, A., Lake, D. S. & Ehman, R. L., 2002, Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). Springer Verlag, Vol. 2489. p. 293-299 7 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 2489).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Inversion
Filtering
Elastic moduli
Wave interference
Attenuation
2001
3 Citations (Scopus)

Fast automatic correction of motion artifacts in shoulder MRI

Manduca, A., McGee, K. P., Welch, E. B., Felmlee, J. P. & Ehman, R. L., 2001, Proceedings of SPIE - The International Society for Optical Engineering. Sonka, M. & Hanson, K. M. (eds.). 2 ed. Vol. 4322. p. 853-859 7 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

shoulders
Magnetic resonance imaging
artifacts
Image quality
Hardware
2 Citations (Scopus)

Full 3D rigid body automatic motion correction of MRI images

Su, Y., Manduca, A., Jack, C. R. J., Brian Welch, E. & Ehman, R. L., 2001, Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). Springer Verlag, Vol. 2208. p. 1326-1327 2 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 2208).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Factorization
Rigid Body
Magnetic resonance imaging
Image quality
Brain
2000
23 Citations (Scopus)

An error analysis of Helmholtz inversion for incompressible shear, vibration elastography with application to filter-design for tissue characterization

Oliphant, T. E., Kinnick, R. R., Manduca, A., Ehman, R. L. & Greenleaf, J. F., 2000, Proceedings of the IEEE Ultrasonics Symposium. Schneider, S. C., Levy, M. & McAvoy, B. R. (eds.). Vol. 2. p. 1795-1798 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Error analysis
Probability distributions
Tissue
Distribution functions
Gels
1999
10 Citations (Scopus)

Complex-valued quantitative stiffness estimation using dynamic displacement measurements and local inversion of conservation of momentum

Oliphant, T. E., Mahowald, J. L., Ehman, R. L. & Greenleaf, J. F., 1999, Proceedings of the IEEE Ultrasonics Symposium. Vol. 2. p. 1641-1644 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Displacement measurement
Conservation
Momentum
Gels
Stiffness
1998
7 Citations (Scopus)

An inverse approach to the calculation of elasticity maps for magnetic resonance elastography

Manduca, A., Dutt, V., Borup, D. T., Muthupillai, R., Greenleaf, J. F. & Ehman, R. L., 1998, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3338. p. 426-436 11 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Magnetic Resonance
Magnetic resonance
magnetic resonance
Elasticity
elastic properties
1 Citation (Scopus)

Autofocusing of clinical shoulder MR images for correction of motion artifacts

Manduca, A., McGee, K. P., Welch, E. B., Felmlee, J. P. & Ehman, R. L., 1998, Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). Springer Verlag, Vol. 1496. p. 598-605 8 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 1496).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Auto-focusing
Motion
Image quality
Scanner
Image Quality
3 Citations (Scopus)

Fast autofocusing of motion-corrupted MR images using one-dimensional Fourier transforms

Welch, E. B., Manduca, A. & Ehman, R. L., 1998, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3338. p. 391-397 7 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Auto-focusing
Fast Fourier transforms
Fourier transform
Fourier transforms
Cost functions
13 Citations (Scopus)

Reconstruction of elasticity and attenuation maps in shear wave imaging: An inverse approach

Manduca, A., Dutt, V., Borup, D. T., Muthupillai, R., Ehman, R. L. & Greenleaf, J. F., 1998, Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). Springer Verlag, Vol. 1496. p. 606-613 8 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 1496).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Shear waves
Attenuation
Elasticity
Imaging
Imaging techniques
1997
4 Citations (Scopus)

Inverse approach to elasticity reconstruction in shear wave imaging

Dutt, V., Manduca, A., Muthupillai, R., Ehman, R. L. & Greenleaf, J. F., 1997, Proceedings of the IEEE Ultrasonics Symposium. Schneider, S. C., Levy, M. & McAvoy, B. R. (eds.). IEEE, Vol. 2. p. 1415-1418 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Shear waves
Elasticity
Imaging techniques
Wave equations
Phase measurement
1996
8 Citations (Scopus)

Direct visualization of strain waves by Magnetic Resonance Elastography (MRE)

Greenleaf, J. F., Muthupillai, R., Rossman, P. J., Smith, J., Manduca, A. & Ehman, R. L., 1996, Proceedings of the IEEE Ultrasonics Symposium. Levy, M., Schneider, S. C. & McAvoy, B. R. (eds.). IEEE, Vol. 1. p. 467-472 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Magnetic resonance
Visualization
Tissue
Elasticity
Pathology
1 Citation (Scopus)

Image analysis for magnetic resonance elastography

Manduca, A., Muthupillai, R., Rossman, P. J., Greenleaf, J. F. & Ehman, R. L., 1996, Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. IEEE, Vol. 2. p. 756-757 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Magnetic resonance
Image analysis
Tissue
Tumors
Elasticity
72 Citations (Scopus)

Image processing for magnetic resonance elastography

Manduca, A., Muthupillai, R., Rossman, P. J., Greenleaf, J. F. & Ehman, R. L., 1996, Proceedings of SPIE - The International Society for Optical Engineering. Loew, M. H. & Hanson, K. M. (eds.). Vol. 2710. p. 616-623 8 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Magnetic resonance
magnetic resonance
image processing
Image processing
Tissue
30 Citations (Scopus)

Local wavelength estimation for magnetic resonance elastography

Manduca, A., Muthupillai, R., Rossman, P. J., Greenleaf, J. F. & Ehman, R. L., 1996, IEEE International Conference on Image Processing. Anon (ed.). Los Alamitos, CA, United States: IEEE, Vol. 3. p. 527-530 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Magnetic resonance
Tissue
Wavelength
Tumors
Imaging techniques
1 Citation (Scopus)

Measurement of shear waves in tissue

Greenleaf, J. F., Dutt, V., Muthupillai, R., Manduca, A. & Ehman, R. L., 1996, Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. IEEE, Vol. 5. p. 2172-2173 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Shear waves
Magnetic resonance
Tissue
Wavelength
Elastic moduli
12 Citations (Scopus)

Visualization of tissue elasticity by magnetic resonance elastography

Manduca, A., Muthupillai, R., Rossman, J., Greenleaf, J. F. & Ehman, R. L., 1996, Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). Springer Verlag, Vol. 1131. p. 63-68 6 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 1131).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Magnetic Resonance
Magnetic resonance
Elasticity
Tumor
Visualization
1995

Low frequency acoustic shear wave imaging in tissue-like media using magnetic resonance

Muthupillai, R., Lomas, D. J., Rossman, P. J., Greenleaf, J. F., Manduca, A., Riederer, S. J. & Ehman, R. L., 1995, Proceedings of the IEEE Ultrasonics Symposium. IEEE, Vol. 2. p. 1157-1160 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Shear waves
Magnetic resonance
Acoustic waves
Tissue
Imaging techniques
1993

MR cardiac imaging using breath-hold gradient echo acquisition

Liu, Y. L., Riederer, S. J. & Ehman, R. L., 1993, Computers in Cardiology. Los Alamitos, CA, United States: Publ by IEEE, p. 9-12 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Data acquisition
Blood
Imaging techniques
Diastole
Volunteers
2 Citations (Scopus)

Neural network diagnosis of avascular necrosis from magnetic resonance images

Manduca, A., Christy, P. S. & Ehman, R. L., 1993, Proceedings of SPIE - The International Society for Optical Engineering. Loew, M. H. (ed.). Bellingham, WA, United States: Publ by Society of Photo-Optical Instrumentation Engineers, Vol. 1898. p. 598-603 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

necrosis
Magnetic resonance
magnetic resonance
Neural networks
Multilayer neural networks
1992

Real-time interactive color flow MRI

Korin, H. W., Wright, R. C., Hangiandreou, N. J., Ehman, R. L. & Riederer, S. J., 1992, Computers in Cardiology. Los Alamitos, CA, United States: Publ by IEEE, p. 1-4 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Magnetic resonance
Color
Magnetic Resonance Imaging
Imaging techniques
Magnetic Resonance Spectroscopy
1991

ECG-triggered snapshot MR imaging of the heart

Liu, Y., Riederer, S. J., Brown, D. G., Wright, R. C., Holsinger, A. E., Grimm, R. C. & Ehman, R. L., May 1991, Computers in Cardiology. Los Alamitos, CA, United States: Publ by IEEE, p. 381-384 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Magnetic resonance
Electrocardiography
Magnetic Resonance Imaging
Imaging techniques
Image acquisition
2 Citations (Scopus)

Neural network diagnosis of avascular necrosis from magnetic resonance images

Manduca, A., Christy, P. & Ehman, R. L., 1991, Proceedings of the Annual Conference on Engineering in Medicine and Biology. pt 3 ed. Piscataway, NJ, United States: Publ by IEEE, Vol. 13. p. 1429-1431 3 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Magnetic resonance
Neural networks
Radiology
Multilayer neural networks
Experiments