Trong-Kha Truong1, Nan-kuei Chen1, Allen W. Song1
1Brain Imaging and Analysis Center, Duke University, Durham, NC, USA
Spiral imaging is vulnerable to susceptibility-induced B0 inhomogeneities as well as temporal B0 variations due to subject motion, physiological noise, and system instabilities, resulting in image blurring. Here, we further develop and combine 1) a novel method termed k-space energy spectrum analysis, which can inherently and dynamically generate a full-resolution B0 map from the k-space data at each time point without requiring any additional data acquisition, and 2) a multi-channel modulation deblurring method, to effectively and efficiently correct for these artifacts and achieve a high spatial fidelity and temporal stability in spiral imaging.