Bradley D. Clymer

Associate Professor of Electrical & Computer Engineering
Associate Professor of Biomedical Informatics
The Ohio State University

Mailing Address:
205 Dreese Laboratory
Department of Electrical & Computer Engineering
2015 Neil Avenue
Columbus, OH 43210 USA
phone: (614) 292-3477 (office, with machine)
fax: (614) 292-7596

Office Hours (August 22-December 6): MWF 11:00 - 12:00, Th 12:30-1:30

or by appointment (check schedule below for openings)

This week's schedule (PDF format)

Next week's schedule (PDF format)

Click here for 5 cycle semilog chart for Bode diagrams (PDF format)


Prof. Clymer received the B.S.E.E. and M. S. degrees in electrical engineering from The Ohio State University in 1981 and 1982, respectively, and the Ph. D. degree in electrical engineering from Stanford University in 1987. From 1981 to 1983 he worked in the Advanced Subsystems Department of Hughes Aircraft Company Space and Communications Group in El Segundo, California. He has been on the faculty of Electrical & Computer Engineering at OSU since 1987. He has been Participating Faculty (1991-2005) and Core Faculty (2005-present) in Biomedical Engineering at OSU, and has held a faculty appointment in the Department of Biomedical Informatics at OSU since 2002.

Prof. Clymer worked as a consultant for 10 years for The Cleveland Clinic Foundation, Cleveland, Ohio, on adaptive image processing of xray images, 3D reconstruction of transesophageal ultrasound images of cardiac valves, 3D reconstruction of mammograms, feasibility of MRI for imaging aortic atherosclerotic plaques and classification of atherosclerotic plaques from texture analysis of intravascular ultrasound (IVUS) images of coronary arteries, signal analysis and data fusion (EEG, EKG, EMG, etc.) for overnight sleep studies, cone beam reconstruction for a x-ray computed tomographic microscope, and image texture analysis of trabecular structures for assessment of osteoporosis and prediction of fracture. He has an Adjunct Staff appointment in the Department of Biomedical Engineering at The Cleveland Clinic Foundation.

Dr. Clymer is a senior member of IEEE.

Research Interests

Dr. Clymer's current research activities are processing and capture of medical images, including MRI, mammography, ultrasound and x-ray computed tomographic microscopy; signal processing of EEG, ECG and phonocardiographs; adaptive filtering; signal processing to simulate human perception of audio for synchronization of movement for a biped robot; and Fourier transforms and linear systems.

Courses Taught

Prof. Clymer has taught a wide range of courses, including ECE 5206 Medical Imaging, which runs every spring semester. He also occasionally teaches ECE 2050, (Introduction to discrete time systems and signals), and ECE 3050 (linear systems).


R. Mazumder, S. Schroeder, X. Mo, A. S. Litsky, B. D. Clymer, R. D. White,  A. Kolipaka,  `` In vivo magnetic resonance elastography to estimate left ventricular stiffness in a myocardial infarction induced porcine model,''  J. Magn. Reson. Imaging, August 2016, doi:10.1002/jmri.25432.

R. Mazumder, S. Schroeder, X. Mo, B. D., Clymer, R. D. White,  A. Kolipaka,   ``In vivo quantification of myocardial stiffness in hypertensive porcine hearts using MR elastography,'' J. Magn. Reson. Imaging, August 2016,  doi:10.1002/jmri.25423.

H. Hemami, Eric Tarr, Boren Li, A. Krishnamurthy, B. Clymer, B. Dariush, ``Toward a Cybernetic Model of Human Movement," Mechanical Engineering Research, vol. 6, no. 1, pp. 29-45, 2016.

R. Mazumder, B.  Clymer, X. Mo, R.D. White, A. Kolipaka, ``Adaptive Anisotropic Gaussian Filtering to Reduce Acquisition Time in Cardiac Diffusion Tensor Imaging,''  International Journal of Cardiovascular Imaging,  vol. 32, no. 6, pp. 921--934, 2016.

R Mazumder, S Choi, BD Clymer, RD White, A Kolipaka,  `` Diffusion Tensor Imaging of Healthy and Infarcted Porcine Hearts: Study the Impact of Formalin-Fixation,'' Journal of Medical Imaging and Radiation Sciences,  vol. 47, no. 1, pp. 74--85, 2016.

Carlos del Rio,  Bradley D Clymer,  George Billman, ``Myocardial Electrotonic Response to Submaximal Exercise in Dogs with Healed Myocardial Infarctions: Evidence for beta-Adrenoceptor Mediated Enhanced Coupling during Exercise Testing," Frontiers in Physiolology, vol. 6, doi:10.3389/fphys.2015.00025, 2015.

Niranchana Manivannan,  Bradley D. Clymer,  Anna Bratasz,   Kimerly A. Powell,``Comparison of Super Resolution Reconstruction Acquisition Geometries for Use in Mouse Phenotyping," International Journal of Biomedical Imaging, vol. 2013, Article ID 820874, 11 pages, 2013. doi:10.1155/2013/820874.

TP Sharkey-Toppen,  G Miha,  A Maiseyeu,   T Tran,  BD Clymer,  OP Simonetti,  SV Raman, ``Improved in vivo human carotid artery wall T2* estimation," Magnetic Resonance Imaging, vol. 31, no. 1, pp. 44--52, 2013.

H. Hemami,  B.D. Clymer   M. Hemami, ``Simulation of Control and Synthesis of a Constrained Movement towards Rehabilitation Exercises," Integrated Computer-Aided Engineering, vol. 19, no. 4, pp, 351--364, 2012.

Barbaros S. Erdal,  Bradley D. Clymer,  Vedat Yildiz,   Michael V. Knopp,  Elliott D. Crouser, ``Unexpectedly High Prevalence of Sarcoidosis in a Representative U.S. Metropolitan Population," Respiratory Medicine, vol. 106, no. 6, pp. 893--899, 2012.

Selnur Erdal,  Elliott D. Crouser,  Vedat Yildiz,   Mark A. King,  Andrew T. Patterson,  Michael V. Knopp,  Bradley D. Clymer, ``Quantitative Computerized Two-Point Correlation Analysis of Lung CT Scans Correlates with Pulmonary Function in Pulmonary Sarcoidosis," Chest, vol. 142, no. 6, pp. 1589--1597, 2012.

Selnur Erdal,  Jianhua Liu,  Jing Ding,   Jingchun Chen,  Clay B. Marsh,  Jyoti Kamal,  Bradley D. Clymer, ``A Database De-identification Framework to Enable Direct Queries on Medical Data for Secondary Use,"Methods of Information in Medicine, vol. 51, no. 3, pp. 229--241, 2012.

Carlos del Rio,  Tom Dawson,  Bradley Clymer,   David Paterson,  George Billman, ``Effects of Acute Vagal Nerve Stimulation on the Early Passive Electrical Changes Induced by Myocardial Ischaemia in Dogs: Heart Rate-mediated Attenuation," Experimental Physiology, vol. 93, no. 8, pp. 931--944, 2008.

Mehmet Kale,  Bradley Clymer,  Regina Koch,   Steffen Sammet,  Robert Stevens,  Michael Knopp, ``Multispectral Co-occurrence With Three Random Variables in Dynamic Contrast Enhanced Magnetic Resonance Imaging of Breast Cancer," IEEE Trans. Medical Imaging, vol. 27, no. 10, pp 1425--1431, 2008.

Carlos del Rio,  Patrick McConnell,  Monica Kukielka, Roger Dwonczyk, Bradley Clymer,  Michael Howie,  George Billman, ``Electrotonic Remodeling following Myocardial Infarction in Dogs Susceptible and Resistant to Sudden Cardiac Death," J. Appl. Physiology, vol. 104, no. 2, pp. 386--393, 2008.

Hee Chun, Bradley Clymer,  Steffen Sammet,  Regina M. Koch,  Robert Stevens, Michael V. Knopp, ``Improvement of ROI Placement by Adding Auditory Feedback to Radiological Complex Tumor Cases: A Pilot Assessment using DCE-MR Mammography,''  J Magnetic Resonance Imaging, vol. 27, no. 1, pp. 27--33, 2008.

Rizwan Ahmad, Deepti S. Vikram, Bradley Clymer, Lee C. Potter, Yuanmu Deng, Parthasarathy Srinivasan, Jay L. Zweier, Periannan Kuppusamy, ``Uniform Distribution of Projection Data for Improved Reconstruction Quality of 4D EPR Imaging,''   J. Magn. Reson, vol. 187, no. 2, pp. 277-287, 2007.

Brent J. Woods, Bradley D. Clymer, Tahsin Kurc, Johannes Heverhagen, Robert Stevens, Adem Orsdemir, Orhan Bulan, Michael Knopp, “Malignant Lesion Segmentation Using 4D Co-occurrence Texture Analysis Applied to Dynamic Contrast Enhanced Magnetic Resonance Breast Image Data,” J. Magnetic Resonance Imaging, vol. 25, no. 3, pp.495–501, 2007.

Rizwan Ahmad, Yuanmu Deng, Deepti S. Vikram, Bradley Clymer, Parthasarathy Srinivasan, Jay L. Zweier, Periannan Kuppusamy, “Quasi Monte Carlo-based isotropic distribution of gradient directions for improved reconstruction quality of 3D EPR imaging,” J. Magnetic Resonance, vol. 184, no. 2, pp. 236–245, 2007.

Rizwan Ahmad, Bradley Clymer, Deepti S. Vikram, Yuanmu Deng, Hiroshi Hirata, Jay L. Zweier, Periannan Kuppusamy, “Enhanced Resolution for EPR Imaging by Two-Step Deblurring,” J. Magnetic Resonance, vol. 184, no. 2, pp. 246--257, 2007..

Brent Woods, Bradley Clymer, Johannes Heverhagen, Michael Knopp, Joel Saltz, Tahsin Kurc, “Parallel 4-D Haralick Texture Analysis for Disk-resident Image Datasets,” Concurrency and Computation: Practice and Experience, vol. 19, pp. 65--87, 2007.

Rizwan Ahmad, Deepti S. Vikram, Sergey Petryakov, Yuanmu Deng, Jay L. Zweier, Periannan Kuppusamy, Bradley Clymer, “Automated on-the-fly detection and correction procedure for EPR imaging data acquisition,” Magn. Reson. in Med., vol. 56, no. 3, pp. 644--653, 2006.

Rizwan Ahmad, Bradley Clymer, Yuanmu Deng, Guanglong He, Deepti S. Vikram, Jay L Zweier, and Periannan Kuppusamy, “Optimization of Data Acquisition for EPR Imaging,” J. Magnetic Resonance, vol. 179, no. 2, pp. 263--272, 2006.

Chad Showalter, Bradley Clymer, Bradford Richmond and Kimerly Powell, “Three dimensional texture analysis of cancellous bone cores evaluated at clinical CT resolutions,” Osteoporosis International, vol. 17, no. 2, pp. 259--266, 2006.

Carlos del Rio, Patrick McConnell, Bradley Clymer, Roger Dzwonczyk, Robert Michler, George Billman and Michael Howie, “Early time course of myocardial electrical impedance duringacute coronary artery occlusion in pigs, dogs and man,” J. Applied Physiology, vol. 99, no. 4, pp. 1576--1581, 2005.

T.-K. Truong, B. D. Clymer, D. W. Chakeres and P. Schmalbrock, “Three-dimensional numerical simulations of susceptibility-induced magnetic field inhomogeneities in the human head,” Magn. Reson. Imag., vol. 20, pp 759-770, 2002.

D. James, B. D. Clymer and P. Schmalbrock, “Texture detection of simulated microcalcification susceptibility effects in magnetic resonance imaging of breasts,” J. Magn. Reson. Imag., vol. 13, no. 6, pp. 876--881, 2001.


A. Bartolo, B. D. Clymer, R. C. Burgess, J. P. Turnbull, J. A. Golish and M. Perry, “An arrhythmia detector and heart rate estimator for overnight polysomnography studies,”  IEEE Trans. Biomed. Eng.}, vol. 48, no. 5, pp. 513--521, 2001.


A. Bartolo, B. D. Clymer, J. A. Golish and R. C. Burgess, “The polysomnogram assay (PSGA):  A method to represent the overnight polysomnogram in a condensed format,” Computers \& Biomedical Research,  vol. 33, no. 2, pp. 110--125, 2000.


B. L. Anderson, L. J. Pelz, S. A. Ringel, B. D.Clymer and S. A. Collins, Jr., “Photonics laboratory with emphasis on technical diversity,” IEEE Trans. Educ., vol. 41, no. 3, pp. 194--202, 1998.

A. Bartolo, B. D. Clymer, R. Burgess and J.Turnbull, “An efficient method of FIR  filtering based on impulse response rounding,” IEEE Trans. Sig. Proc., vol. 46, no. 8, pp. 2243--2248, 1998.

K. Iqbal, B. D. Clymer and H. Hemami, “Squatting maneuver of a three-link nine-muscle model in the saggital plane,” J. Aut. Control, vol. 7, pp. 113--129, 1997.

L. Jalics, H. Hemami, and B. D. Clymer, “Rocking, Tapping and Stepping: a Prelude to Dance,” Autonomous Robots, vol. 4, no. 3, pp. 227--242, 1997.

L. Jalics, H. Hemami, and B. D. Clymer, “Control Strategy for Adaptive Bipedal Locomotion,” Autonomous Robots, vol. 4, no. 3, pp. 243--258, 1997.

Kui Ying, Bradley D. Clymer and Petra Schmalbrock, “Adaptive filtering for high resolution magnetic resonance imaging,” J. Mag. Res. Imag., vol. 6, no. 2, pp. 367--377, 1996.

Dane C. Butzer, Bradley D. Clymer, and Betty Lise Anderson, “A high efficient interconnection for use with a multistage optical switching network with orthogonally polarized data and address information,” Applied Optics, vol. 35, no. 11, pp. 1788--1800, 1995.

K. Ying, P. Schmalbrock and B. Clymer, “Echo-time reduction for submillimeter resolution imaging with a 3D phase encode time reduced acquisition method,” Mag. Res. in Med., vol. 33, pp. 82--87, 1995.

John H. Gossett, Bradley D. Clymer and Hooshang Hemami, “Long and Short Delay Feedback on One-Link Nonlinear Forearm with Coactivation,” IEEE Trans.on Syst., Man & Cyber., vol. 24, no. 9, pp 1317--1327, 1994.

P. Schmalbrock, M. A. Brogan, D. W. Chakeres, V. A Hacker, K. Ying, and B. Clymer, “Optimization of Sub-Millimeter Resolution MR Imaging Methods for the Inner Ear,” J. Mag. Res. Im., vol. 3, no. 3, pp. 451--459, 1993.

Betty Lise Anderson, Thomas B. DeVore and Bradley D. Clymer, “Use of Laser Diode Arrays in Holographic Interconnects,” Appl. Opt. vol. 31, no. 35, pp. 7411--7416, 1992.

R. Brian Jenkins and Bradley D. Clymer, “Acousto-optic Comparison Switch for Optical Switching Networks with Analog Addressing Techniques,” Appl. Opt., vol. 31, no. 26, pp. 5453--5463, 1992.

B. D. Clymer, T. B. De Vore, J. Jagadeesh, and L. D. Tomei, “Spatial Resolution of Images Reconstructed from Bulk Detection Scanning Laser Microscope,” Appl. Opt., vol. 30, no. 34, pp. 5056--5062, 1991.

B. D. Clymer and Dana C. Gillfillan, “Corrugation Gratings for Fast Integrated CMOS Photodetectors: Implementation and Diffraction Analysis,” Appl. Opt., vol. 30, no. 30, pp. 4390--4395, 1991.

Bradley D. Clymer, “Reflected Sunlight Reduction and Characterization for Deep Space Optical Receiver Antenna (DSORA),” NASA Telecomm. and Data Aquis. Prog. Report, vol. 42-103, pp. 110--117, 1990.

Bradley D. Clymer, “Active Optic1s for Segmented Primary Mirror on Deep Space Optical Receiver Antenna (DSORA),” NASA Telecomm. and Data Aquis. Prog. Report, vol. 42-103, pp. 128--134, 1990.

Bradley D. Clymer, “Surface-Relief Grating Structures for Efficient High Bandwidth Integrated Photodetectors for Optical Interconnections in Silicon VLSI,” Appl. Opt., vol. 28, no. 24, pp. 5374--5382, 1989.

Bradley D. Clymer and Joseph W. Goodman, “Timing Uncertainty for Receivers in Optical Clock Distribution for VLSI,” Opt. Eng., vol. 27, no. 11, pp. 944--954, 1988.

Bradley D. Clymer and Joseph W. Goodman, “Optical Clock Distribution to Silicon Chips,” Opt. Eng., vol. 25, no. 10, pp. 1103--1108, 1986.

B. Clymer and S. A. Collins, Jr., “Optical Computer Switching Network,” Opt. Eng., vol. 24, no. 1, pp. 74--81, 1985.

Personal Interests

Click here to see a MP4 movie of me "dotting the i" on Script Ohio before the OSU-Michigan game, November 22, 1980

Click here to see a MP4 movie from 1980 OSU Marching Band tryouts "The Best Damn Band in the Land"