Biomedical Engineering

Ramsey D. Badawi

Principal Investigator

Director of Research, Division of Nuclear Medicine

Associate Professor of Radiology and PET Physicist


Phone: 916-734-7940

Fax: 916 734 7965


Ph.D. (Biophysics), University of London, United Kingdom,
M.Sc. (Astronomy) and B.Sc.(Physics), University of Sussex, UK

Research Interests

The Badawi Lab is focused on translational imaging, with emphasis on PET and other radiotracer techniques. Translational imaging is aimed at transferring (“translating”) research imaging methodologies to the clinic and human use. This requires a multidisciplinary approach and the Badawi lab has developed multiple collaborations with other investigators.

The Badawi Lab is currently engaged in development of new scanner hardware for high-resolution molecular imaging in humans, image processing and informatics support for the use of image-based tumor metrics in cancer therapeutics, a combined optical/beta probe for atherosclerosis applications, and design explorations for a very large axial field of view PET scanner for humans.

The Badawi Lab also supports a range of clinically-driven projects and trials directed by physicians.

Research Facility

Badawi Lab

Selected Publications

Lodge MA, Badawi RD, Gilbert R, Dibos PE and Line, BR. A Comparison of    2D and 3D Acquisition for 18F-FDG PET Oncology Studies Performed on an LSO Scanner.  J. Nucl. Med. 47(1): 23-31, 2006

Wu Y, Yang K, Fu L, Qi J, Boone JM, Cherry SR and Badawi RD. Characteristics of the PET Component of a Dedicated Breast PET/CT Scanner Prototype, Nuclear Science Symposium Conference Record, 2006. Volume 4, Oct. 2006 Page(s):2335 – 2339

Bowen SL, Cherry SR, Boone JM and Badawi RD.  Monte Carlo Simulation Study of Camera Designs for the PET Component of a Dedicated Breast PET/CT Scanner. Nuclear Science Symposium Conference Record, 2006. Volume 6,  Oct. 2006 Page(s):3920 – 3924

Fahey FH, Palmer MR, Strauss K, Zimmerman RE, Badawi RD and Treves ST. Image Quality and Dosimetry using CT-Based Attenuation Correction for Pediatric PET.   Radiology 243(1): 96-104, 2007

Holdsworth, CH, Badawi RD, Manola J, Kijewski MF, Israel DA, Demetri GD and Van den Abbeele, AD. Use of CT and FDG-PET as Early Prognostic Indicators of Response to Imatinib Mesylate (Gleevectm) in Patients with Gastrointestinal Stromal Tumors (GIST). Am. J. Roentgenol 189(6):W324-30, 2007

El Fakhri G, Santos PA, Badawi RD, Holdsworth CH, Van den Abbeele AD and Kijewski MF. Impact  of  Acquisition  Geometry,  Image  Processing,  and Patient  Size  in  Lesion  Detection  in  Whole – Body  18FDG-PET. J. Nucl. Med.. 48(12):1951-1960, 2007

Chaudhari AJ, Yang Y, Cherry SR and Badawi RD. A hybrid DOI detector with high packing fraction for the PET component of a dedicated breast PET/CT system.
IEEE Trans. Nucl. Sci. 55(3):853-861, 2008.

Chaudhari AJ , Joshi AA, Bowen SL, Leahy RM, Cherry RD and Badawi RD. Crystal identification in Positron Emission Tomography using Nonrigid Registration to a Fourier-based Template.
Phys. Med. Biol., 53: 5011–5027, 2008.

Ray S, Hagge R, Gillen M,  Cerejo M, Shakeri S, Beckett LA, Greasby T and Badawi RD. Comparison of 2D and 3D Iterative Watershed Segmentation Methods in Hepatic Tumor Volumetrics.
Med. Phys. 35(12):5869-5881, 2008