北京大学工学院生物医学工程系学术报告（报告人：Hong Liu）
发布时间: 2009-06-29 12:24:00
北京大学工学院
生物医学工程系学术报告
题目：Development and characterization of advanced x-ray imaging techniques
报告人 Hong Liu 教授
University of Oklahoma
主持人：任秋实 教授
时 间：6月29日（周一）下午4:00
地 点：北大工学院力学楼434会议室
报告内容摘要：
Radiography is one of the important imaging techniques in medicine. Conventional radiography is principally based on x-ray tissue attenuations. However, x-ray tissue contrast can also be obtained from phase-changes. Several advanced methods are currently under investigation to image phase variations, among them, the in-line phase sensitive x-ray imaging techniques hold a great potential for clinical applications, as they can be implemented with polychromatic sources. The in-line phase-contrast imaging measures the Laplacian of phase, leading to improved feature visualizations through edge enhancement. Furthermore, the in-line phase x-ray imaging allows the retrieval of tissue’s phase map; therefore it potentially enables quantitative tissue characterization for clinical diagnosis. In this presentation, the basic principles of medical x-ray imaging will be introduced. The development of phase-contrast x-ray imaging prototypes; as well as investigations on phase retrieval techniques will be discussed.
报告人简介：
Dr. Hong Liu is currently the Charles and Jean Smith Chair in Biomedical Engineering, George Lynn Cross Professor of Electrical and Computer Engineering, adjunct Professor of Medicine at the University of Oklahoma. He is a fellow of the American Institute of Medical and Biological Engineering (AIMBE), and a fellow of the International Society for Optical Engineering (SPIE). He is also the Editor-in-Chief of the Journal of X-ray Science and technology, a SCI indexed international journal.
Dr. Liu is an internationally acclaimed leading researcher in Medical Imaging. His current research projects include phase contrast and quantitative phase x-ray imaging for breast cancer diagnosis; and optical and fluorescent imaging devices for clinical genetic diagnosis. He has published more than 180 scientific papers, book chapters, and patents.
Dr. Liu received his college education in Mechanical Engineering and Master training in Applied Physics, both in Beijing, China. He received a Ph.D. degree in Biomedical Engineering from Worcester Polytechnic Institute in Massachusetts, USA. Dr. Liu was on faculty at the University of Virginia and Johns Hopkins University.
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