eIRIS: Eigen-analysis approach for improved spine multi-shot diffusion MRI

Image reconstruction using image-space sampling function (IRIS) corrects motion-induced inter-shot phase variations using phase maps from navigator-echo for multi-shot diffusion MRI. However, the bandwidth along the phase-encoding direction of navigator-echo is usually lower than that of image-echo, and thus their geometric distortions may be different. This geometric mismatch is corrected in IRIS by using the B0 map from an additional scan. In this paper, we present an enhanced IRIS (eIRIS) method that remove the requirement of B0 map.

Source: Magnetic Resonance Imaging - April 4, 2018 Category: Radiology Authors: Li Guo, Feng Huang, Zhongbiao Xu, Yingjie Mei, Wenxing Fang, Xiaodong Ma, Erpeng Dai, Hua Guo, Qianjin Feng, Wufan Chen, Yanqiu Feng Tags: Technical note Source Type: research