报告题目：HIRE: Harmonic Incompatibility Removal Model for Whole Brain Susceptibility Imaging
报告时间：2018-9-27 15:30-17:00
报告地点：3号楼理学院会议室
报告人：崔宰珪 博士
摘要：Quantitative susceptibility mapping (QSM) uses the phase data in magnetic resonance signal to visualize a three dimensional susceptibility distribution by solving the magnetic field to susceptibility inverse problem. Due to the presence of zeros of the integration kernel in the frequency domain, QSM is an ill-posed inverse problem. Although numerous regularization based models have been proposed to overcome this problem, the incompatibility in the field data has not received enough attention, which leads to deterioration of the recovery. In this talk, we show that the data acquisition process of QSM inherently generates a harmonic incompatibility in the measured local field. Based on such discovery, we propose a novel regularization based susceptibility reconstruction model with an additional sparsity based regularization term on the harmonic incompatibility. Numerical experiments show that the proposed method achieves better performance than the existing approaches.
报告人简介：崔宰珪，上海同济大学。2010本科毕业于韩国延世大学数学系，2015年在韩国延世大学计算科学与工程系获博士学位。导师为：Jin Keun Seo教授。博士期间获得韩国应用数学会年轻学者基金。2015-17在韩国延世大学，上海交通大学从事博士后研究工作。目前在同济大学数学系任职。主要研究方向为，小波分析和图像处理。在SIAM J. Imaging Sci, Comm. Pure. Appl. Math. , J. Comp. Math. 等多个国际顶尖的应用数学杂志发表论文。
