报告题目：Spectral CT Imaging – Physics, Implementation and Clinical Applications
报告人：Xiangyang Tang, Ph.D., DABR
报告简介：With the enormous effort devoted by scientists and researchers to making it more potent for clinical excellence, x-ray computed tomography (CT) has become one of the most popular imaging modalities in the clinic for saving patients’ life or improve their quality of life. In general, each aspect of CT’s imaging performance may not be the best in the clinic in comparison to other imaging modalities, but, if putting all things together, it is quite fair to say that CT is the best and most robust imaging modality to fulfill the requirements imposed by the vast majority of clinical applications. Since its debut in the early 1970s, CT has advanced substantially in every aspect of its capability for clinical applications, with the most remarkable in its speed of data acquisition and image formation. We have observed a race in the number of detector rows in CT since the mid-1990s, driven by the desire to scan a patient’s entire heart and other large organs without table movement. Up to date, the x-ray radiation dose, contrast agent dose and inter-slab artifact associated with CT can be reduced substantially, in addition to the efficiency in utilization of x-ray tube power. The dual-source-dual-detector CT became available in 2008, followed by the scan mode at dual peak energies, to enable spectral CT for material differentiation and virtual monochromatic CT. To meet the challenges imposed by advanced applications, CT technology is continuing to advance in leaps. In this seminar, we provide an introductory review of spectral CT, with coverage on its physics, implementation and clinical applications.
报告人简介：Dr. Xiangyang Tang joined the Department of Radiology at Emory University in Feb., 2009, after spent almost 8 years as senior scientist with the Applied Science Lab of GE Healthcare. As an experienced scientist in CT imaging, he has been leading his lab in Emory Radiology working on innovation in CT’s architecture, system and performance assessment methodology, development of analytic and optimization-based image reconstruction algorithms, exploration of novel x-ray imaging methods, such as x-ray phase contrast CT and dual energy CT, as well as optimization of protocols for clinical excellence in low dose CT. Aimed at enabling CT for molecular imaging, Dr. Tang has also been engaged in extending CT/micro-CT’s capability by taking advantage of the fast and exciting progresses in nanoparticulated contrast agents. (Dr. Tang earned his PhD degree from the University of Rochester in 2002. In addition to the publication of more than 100 papers in leading scientific journals or conferences, 19 US patents have been issued under his name. As an active contributor, he has been serving the community as the associate editor of Medical Physics, member of the Physics Subcommittee of RSNA‘s Scientific Program Committee, chair of sessions in scientific conferences, reviewer of numerous journals and conferences, and panelist in the study sections of NIH, DoD, AHA, ALZ and INSERM (French Institute of Health and Medical Research).