Personnel
Felix W. Wehrli, PhD
Professor of Radiologic Science, Biochemistry and Biophysics Director, Laboratory for Structural, Functional and Physiologic Imaging
Dr. Wehrli’s research centers on the conception, implementation and translation to the clinic, of new quantitative imaging approaches using predominantly MRI principles. All research conducted in the laboratory is supported by grants from the National Institute of Health or the Institute of Translational Medicine and Therapeutics.
| PhD | Swiss Federal Institute of Technology, Department of Chemistry |
| MS | Swiss Federal Institute of Technology, Department of Chemistry |
Hee Kwon Song, PhD
Associate Professor of Radiology
Dr. Song’s research focuses on the development of dynamic contrast-enhanced (DCE-) MRI strategies based on radial data acquisition and reconstruction that allow ultra-rapid dynamic imaging at both high spatial and high temporal resolutions.
| PhD | University of Pennsylvania, Department of Bioengineering |
| MS | University of Pennsylvania, Department of Bioengineering |
Chamith S. Rajapakse, PhD
Associate Professor of Radiology and Orthopaedic Surgery
Dr. Rajapakse’s research is focused on the development and application of non-invasive and multi-disciplinary imaging-based approaches to advance the understanding, diagnosis, and management of musculoskeletal disorders and diseases.
| PhD | University of Houston, Department of Physics |
| MS | University of Houston, Department of Computer Science |
Michael C. Langham, PhD
Assistant Professor of Radiology
Dr. Langham’s research seeks to develop novel quantitative MRI techniques to evaluate vascular structure and function and to translate these techniques from the laboratory to patient-oriented studies.
| PhD | University of North Carolina, Department of Physics |
| BS | Mary Washington College, Department of Physics |
Jeffrey Dennison, PhD
Postdoctoral Researcher
Dr. Dennison’s research is focused on quantification of sleep-stage and age-dependent changes in the cerebral metabolic rate of oxygen. He is also interested in the noninvasive evaluation of hemodynamic and metabolic states of the brain using MRI.
| PhD | Temple University, Department of Psychology |
| MS | New York University, Department of Psychology |
| BS | Hawaii Pacific University, Department of Psychology |
Marianne Nabbout, MD
Physician Scientist
Dr. Nabbout’s research interests are focused on the evaluation of vascular function through quantitative MRI. One area of application is the assessment of the effects of nicotine and e-cigarette aerosols on the endothelial function through various MRI biomarkers.
| MD | American Universitiy of Beirut, Faculty of Medicine and Medical Center |
| BS | American University of Beirut, Department of Biology |
Trevor Chan, BS, BA
Doctoral Student in Bioengineering
Mr. Chan's research is in developing computational methods for medical image refinement and analysis. Two ongoing projects are: self-supervised methods for CT super-resolution and assessment of osteoporosis, and semi-supervised segmentation of 3D and 4D echocardiograms for surgical correction of congenital heart-valve defects.
| PhD | University of Pennsylvania, Department of Bioengineering (expected 2027) |
| BS | Yale University, Department of Mechanical Engineering |
| BA | Yale University, Department of Architecture |
Brian-Tinh Vu, BS
Doctoral Student HHMI Interfaces PhD Program
Mr. Vu’s research is in the application of sparse and redundant representations for quantitative imaging of the proximal femur. His aim is to develop an imaging pipeline suitable for evaluation of the risk of hip fracture in osteoporotic patients in a clinical setting using high-resolution MRI. His academic interests include compressed sensing, dictionary learning, convex optimization, parallel imaging, and steady-state imaging.
| PhD | University of Pennsylvania, Department of Bioengineering (expected 2025) |
| BS | University of Houston, Department of Physics |
Nada Kamona, MS
Doctoral Student in Bioengineering
Ms. Kamona's research involves image-based assessment of bone quality and strength using MRI-based biomarkers and computational biomechanics. Additionally, she is investigating solid-state proton bone-selective MR imaging techniques, specifically for skull imaging of children with craniofacial abnormalities.
| PhD | University of Pennsylvania, Department of Bioengineering (expected 2027) |
| MS | George Washington University, Department of Biomedical Engineering |
| BS | George Washington University, Department of Biomedical Engineering |
Kathryn Jaroszynski, BS
Doctoral Student HHMI Interfaces PhD Program
Ms. Jaroszynski's research involves applying and further developing MRI methods for brain oximetry, including the parametric mapping of whole-brain oxygen metabolism. She is also investigating the use of MRI-based finite element analysis of the human femur as a method for evaluating bone biomechanics.
| PhD | University of Pennsylvania, Department of Bioengineering (expected 2028) |
| BS | George Washington University, Department of Engineering |
Christiana Cottrell, BA
Clinical Research Coordinator
Ms. Cottrell manages clinical research studies that use MRI to examine the acute and long-term effects of smoking, and brain oxygenation during different states of consciousness.
| BA | Colgate University, Department of Neuroscience |
Rasleen Grewal, BS
Clinical Research Coordinator
Ms. Grewal's work focuses on conducting MRI scanning and data analysis for diseases that affect bone health. She also manages numerous clinical research studies and their associated databases.
| BS | Muhlenberg College, Department of Neuroscience |
Holly D. Stefanow, MBE
Associate Director and Project Manager
Ms. Stefanow focuses primarily on managing the administrative operations of government sponsored research grants along with their associated projects and investigator-initiated protocols. Her interest is in bioethics as it relates to research.
| MBE | University of Pennsylvania, Department of Medical Ethics & Health Policy |
| BA | Bucknell University, Department of Sociology |
| AAS | Bel-Rea Institute of Veterinary Technology |