Ryan J. DeWall, Ph.D

Research Assistant

Department Affiliations

Radiology

Medical Physics

Biomedical Engineering

Education

• B.S., Mechanical Engineering, Calvin College, 2005
• M.S., Biomedical Engineering, University of Wisconsin-Madison, 2007
• Ph.D., Biomedical Engineering, University of Wisconsin-Madison, 2011

Research

Research Interests:

Ultrasound Imaging, Shear Wave Elastography, Biomechanics

Doctoral Research Advisor:

Tomy Varghese, Ph.D

Doctoral Dissertation: 

Shear Wave Velocity Imaging using Transient Needle Perturbation for Monitoring Thermal Ablative Therapies, University of Wisconsin-Madison, October 2011.

Positions

• 06/2008-10/2011, Research Assistant, Department of Medical Physics
• 11/2011-08/2013, Research Associate, Department of Radiology
• 09/2013-12/2015, Computational Analyst, Corvid Technologies, Moorseville, NC, USA
• 12/2015-Present, Senior Research and Testing Engineer (Biomechanical), DePuy Synthes, Johnson & Johnson, Philadelphia, PA, USA.

Awards and Honors

Memberships

• Member, American Institute of Ultrasound in Medicine (AIUM)
• Member, Institute of Electrical and Electronics Engineers (IEEE)

Publications @ UW

• R.J. DeWall, T Varghese, C.L. Brace, "Visualizing ex-vivo radiofrequency and microwave ablation zones using electrode vibration elastography", Medical Physics, Vol. 39, No. 11, pp. 6692-6700, 2012. [Abstract]
• R.J. DeWall, T Varghese, "Improving thermal ablation delineation with electrode vibration elastography using a bi-directional shear wave propagation assumption", IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control, Vol. 59, No. 1, pp. 168-173, 2012. [Abstract]
• DeWall, R.J., Varghese, T.,  Brace, C.L., "Quantifying local stiffness variations in radiofrequency ablations with dynamic indentation", IEEE Transactions on Biomedical Engineering, Vol. 59, No. 3, pp. 728-735, 2012. [Abstract]
• DeWall, R.J., Bharat, S., Varghese, T., Hanson, M.E., Agni, R.M., Kliewer, M.A., "Characterizing thecompression dependent viscoelastic properties of human hepatic pathologies using dynamic compression testing", Physics in Medicine and Biology, Vol. 57, No. 8, pp. 2273-2286, 2012. [Abstract]
• DeWall RJ, Varghese T, Madsen EL., Shear wave velocity imaging using transient electrode perturbation: phantom and ex vivo validation, IEEE Trans Med Imaging. 2011 Mar;30(3):666-78. Epub 2010 Nov 11. [Abstract]
• Rubert N, Bharat S, DeWall RJ, Andreano A, Brace C, Jiang J, Sampson L, Varghese T., Electrode displacement strain imaging of thermally-ablated liver tissue in an in vivo animal model, Med Phys. 2010 Mar;37(3):1075-82. [Abstract]
• Jiang J, Brace C, Andreano A, DeWall RJ, Rubert N, Fisher TG, Varghese T, Lee F Jr, Hall TJ., Ultrasound-based relative elastic modulus imaging for visualizing thermal ablation zones in a porcine model., Phys Med Biol. 2010 Apr 21;55(8):2281-306. Epub 2010 Mar 30. [Abstract]
• DeWall RJ, Varghese T, Kliewer MA, Harter JM, Hartenbach EM., Compression-dependent viscoelastic behavior of human cervix tissue, Ultrason Imaging. 2010 Oct;32(4):214-28. [Abstract]

Browse Dr. DeWall's publications on PubMed