Simultaneous multislice accelerated interleaved EPI DWI using generalized blipped-CAIPI acquisition and 3D K-space reconstruction

Abstract

The proposed acquisition and reconstruction is an effective method for accelerating multishot high-resolution DWI, which may be valuable for both neuroscience research and clinical diagnosis. Magn Reson Med 77:1593-1605, 2017. © 2016 International Society for Magnetic Resonance in Medicine.

SMS MUSSELS: A navigator‐free reconstruction for simultaneous multi‐slice‐accelerated multi‐shot diffusion weighted imaging

“…This low SNR‐efficiency limits the ability of ms‐DWI to enable advanced diffusion protocols with high angular resolution in reasonable scan time. Replacing the conventional 2D slice‐by‐slice imaging with simultaneous multi‐slice (SMS) imaging can significantly accelerate ms‐DWI imaging while improving the SNR efficiency …”

Model‐based reconstruction for simultaneous multislice and parallel imaging accelerated multishot diffusion tensor imaging

“…In this case, 2D navigators can be acquired for phase estimation, and the proposed method is also compatible with such navigated phase correction. In navigated phase correction methods, the mismatch between 2D navigators and image echoes should be considered and corrected for accurate phase estimation . The fully sampled b0 data used in the proposed method is critical to achieve accurate reconstruction, but this would reduce the effective acceleration of the whole data acquisition.…”

“…By doing this, inter‐scan motion can be avoided between the reference image and undersampled reconstruction . These datasets were reconstructed by 2D GRAPPA, 3D k‐space multishot reconstruction, and the proposed model‐based method respectively. The corresponding acquisition times of these three acquisitions were estimated based on the actual scan parameters of iEPI with MB = 2.…”

“…Here, we propose a novel model‐based framework for high‐resolution DTI using interleaved EPI (iEPI) combined with SMS acquisition. The SMS‐accelerated iEPI sequence adopted in this study has been reported by our group recently . It can achieve high‐resolution diffusion imaging with through‐plane acceleration.…”

Motion‐robust sub‐millimeter isotropic diffusion imaging through motion corrected generalized slice dithered enhanced resolution (MC‐gSlider) acquisition

“…To mitigate the distortion/blurring of EPI acquisitions in dMRI, several in‐plane segmented techniques have been developed . These techniques can achieve excellent mitigation at a cost of longer scan time and increased motion sensitivity.…”