【优博微展2018】戴二鹏：基于iEPI的高效率高分辨率磁共振扩散成像技术研究

戴二鹏：2018年清华大学优秀博士学位论文二等奖获得者

基于iEPI的高效率高分辨率磁共振扩散成像技术研究

Study on High-Efficiency and High-Resolution Diffusion Magnetic Resonance Imaging Using iEPI

作       者：戴二鹏          

指导教师：郭   华 

培养院系：医学院             

学       科：生物医学工程

Purpose

To develop high-efficiency and high-resolution diffusion magnetic resonance imaging (dMRI) techniques.

Study Contents

Study 1: High-resolution dMRI using 2D/3D multi-shot EPI 

3D multi-slab can achieve isotropic high resolution, thus providing more details in all directions. 2D ms-EPI only has high in-plane resolution and shows finer structural details in the transverse plane.

Study 2: High-efficiency dMRI using SMS

SMS accelerated ms-EPI can achieve comparable image quality as un-accelerated scans, but with a largely reduced scan time (from 15:56 to 8:49). Both of them show more derails and less distortion than ss-EPI.

Selected Publications

1. Dai E, Zhang Z, Ma X, Dong Z, Li X, Xiong Y, Yuan C, Guo H. The effects of navigator distortion and noise level on interleaved EPI DWI reconstruction: a comparison between image- and k-space-based method. Magn Reson Med 2018. DOI: 10.1002/mrm.27190.

2. Dai E, Ma X, Zhang Z, Yuan C, Guo H. Simultaneous multislice accelerated interleaved EPI DWI using generalized blipped-CAIPI acquisition and 3D k-space reconstruction. Magn Reson Med 2017;77:1593-1605.

3. Dai E, et al. Technical Note: Measurement of common carotid artery lumen dynamics using black blood MR cine imaging. Med Phys 2017; Med Phys 2017;44:1105-1112.

4. Dong Z, Dai E, Wang F, Zhang Z, Ma X, Yuan C, Guo H. Model‐based reconstruction for simultaneous multislice and parallel imaging accelerated multishot diffusion tensor imaging. Med. Phys. 2018. DOI: 10.1002/mp.12974. 

5. Ma X, Zhang Z, Dai E, Guo H. Improved multi-shot diffusion imaging using GRAPPA with a compact kernel. Neuroimage 2016;138:88-99.

作者：戴二鹏

供图：戴二鹏

编辑：清华大学研究生院  周明坤  吴佳瑛 李文