Yusheng Li

Yusheng Li (M’09) received the B.S. degree in applied physics and the Ph.D. (first-class Hons.) degree in physics electronics from University of Science and Technology of China, Hefei, China, in 2002 and 2007, respectively. During the Ph.D. study, he developed super-speed time-interleaved data acquisition systems with real-time postprocessing implemented in FPGA. From 2007 to 2011, he was a Postdoctoral Researcher on the development of a dedicated cardiac SPECT using slit-slat collimator with the Department of Diagnostic Radiology, Rush University Medical Center, Chicago, IL, USA. He mathematically characterized slit-slat collimator, and analyzed noise propagation for iterative image reconstruction based on Fisher information. In 2011, he joined the Physics and Instrumentation Group, Department of Radiology, University of Pennsylvania, Philadelphia, PA, USA. Since then, he has been working on PET instrumentation and image reconstruction. He has developed fractional-crystal collimation and supersampling technique to improve PET spatial resolution. He has developed a unified Fourier theory and derived generalized consistency equations for time-of-flight PET. His research interests include tomographic image reconstruction algorithms in PET, SPECT, and X-ray CT, data processing, and data correction techniques.