报告摘要：In this course, we will introduce the divergent beam transform and discuss some of its properties. The divergent beam transform is the mathematical tool used to model the measurements in X-ray cone-beam tomography. The condition of Tuy, which is needed to enable accurate reconstruction, will be discussed, as well as general reconstruction theories. A particular emphasis will be placed on two theories: the reconstruction scheme of Grangeat, and the filtered-backprojection method of Katsevich. These theories will be presented in such a way that the mathematical link between the two methods appears clear. Afterwards, we will discuss reconstruction from helical cone-beam data for diagnostic CT scanners. Reconstruction using a direct application of the method of Katsevich will be considered, as well as using an alternative methodology that relies on inversion of the Hilbert transform in image space.

报告人简介：Frederic Noo 教授，1998年于比利时 University of Liege 获得医学成像博士学位，自2002年加入University of Utah，2013年被评为Tenure教授。曾多次担任Medical Physics的客座编辑，图像重建领域内最重要的学术会议International Meeting on Fully Three-dimensional Image Reconstruction in Radiology and Nuclear Medicine和International Conference on Image formation in X-ray Computed Tomography的主席和会议论文主编。目前担任IEEE Tran Medical Imaging的副编辑，Medical Physics 的编委会委员。曾任犹他大学先进成像研究和设施基金委员会主席，终身教授评审委员会委员，放射系执行委员会成员等。他在CT成像领域的重建方法和性能评估研究方面有深厚的研究经验和突出的研究成果，尤其在解析重建方面发表了多项代表性工作。

第146期“论坛”主请人联系方式：
邢宇翔   62782510   xingyx@tsinghua.edu.cn