Shot-wise separate motion correction and ICA denoising for BISEPI high-resolution fMRI study at 7T

Shot-wise separate motion correction is presented for BISEPI (Block-Interleaved Segmented EPI)-based high-resolution fMRI at 7T. Artifacts caused by subject motion during longer acquisition time of one volume than normal multi-shot EPI reduces the performance of BISEPI. The proposed k-space motion correction (KMoCo) method calculates and corrects the motion during the shot-wise acquisition of each volume separately. We also performed ICA denoising on the KMoCo data. The proposed method improves temporal SNR, the number of detected active voxels, and localization of brain activity in high-resolution fMRI at 7T