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Abstract #1014

Towards Genuine Three-dimensional Diffusion Imaging with Second Order Gradient Moment Nulling

Yishi Wang1, Dehe Weng2, Jieying Zhang3, Tianyi Qian3, Wenzhang Liu3, Kun Zhou2, Yanglei Wu1, Baogui Zhang3, and Qing Li3
1MR Research Collaboration Team, Siemens Healthineers Ltd., Beijing, China, 2Siemens Shenzhen Magnetic Resonance Ltd., Shenzhen, China, 3Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, China

Synopsis

Keywords: Diffusion Acquisition, Pulse Sequence Design

Motivation: While 3D acquisition has the advantages of achieving high resolution and signal-to-noise ratio and has been established for most sequences, diffusion imaging, has predominantly adhered to 2D acquisition or partial 3D such as multi-slab acquisition for over 50 years.

Goal(s): We aim to bring diffusion imaging to the next era by implementing a genuine 3D diffusion imaging sequence.

Approach: The sequence was implemented using gradient moment nulling and 3D EPI acquisition and basic reconstruction methods.

Results: Whole brain 3D diffusion imaging was achieved at isotropic sub-millimeter resolution and a practical scan time.

Impact: This work liberates diffusion imaging from 2D or partial 3D acquisition to true 3D acquisition.

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