题目：Cone Beam CT Imaging
Ruola Ning, Ph.D.
Professor of Imaging Sciences, Radiation Oncology, Oncology, Biomedical Engineering and Electrical & Computer Engineering
University of Rochester
Rochester, NY 14450
A great deal effort has been devoted to the development of the cone beam computed tomography (CBCT) imaging technique in the past. It is proposed to address the limitations of current helical CT in medical imaging with the CBCT imaging technique which uses a cone beam geometry volume scan and a two dimensional detector. True CBCT is the next evolutionary step of CT development. Actually, a few CBCT prototypes have been introduced in the past decade, and the development of the flat panel detector (FPD) is making CBCT imaging more competitive.
The author will present the principals of cone beam CT, its potential clinical advantages over spiral CT (including multi-slice CT), key technical problems to be solved, and the development of cone beam reconstruction algorithms. With the support of US National Institute of Health (NIH), the author has been working on four applications of the CBCT imaging technique for many years: 1. cone beam CT angiography, 2. cone beam CT for lung cancer detection, 3. cone beam CT breast imaging and 4. micro-cone beam CT for small animal imaging. The results of phantom, animal or clinical studies for the applications of CBCT will be presented.