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Abstract #5018

Isotropic Whole-brain CEST Imaging with Fast SPACE Readout

Yi Zhang1,2, Ruibin Liu1, Yi Sun3, and Dan Wu1,2

1Department of Biomedical Engineering, Zhejiang University, Hangzhou, China, 2Department of Radiology, Johns Hopkins University, Baltimore, MD, United States, 3MR Collaboration, Siemens Healthcare Ltd., Shanghai, China

For Chemical Exchange Saturation Transfer (CEST) imaging to be adopted as a routine clinical sequence, its spatial coverage and acquisition speed need ideally to be comparable to the current anatomical MRI sequences. To the best of our knowledge, whole-brain CEST imaging has only been demonstrated with 3D EPI readout, which, however, is vulnerable to susceptibility artifacts. Here, we propose a novel whole-brain isotropic-resolution CEST sequence utilizing the fast SPACE readout. The SPACE CEST sequence enables whole-brain 2.79mm isotropic CEST imaging in 5min without susceptibility artifacts, and should facilitate the translation of CEST MRI as a clinical routine sequence.

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