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Abstract #0624

Efficient Time-dependent Diffusion MRI Using Multiple Stimulated Echoes

Guangyu Dan1,2, Kaibao Sun1, Qingfei Luo1, and Xiaohong Joe Zhou1,2,3
1Center for Magnetic Resonance Research, University of Illinois at Chicago, Chicago, IL, United States, 2Department of Biomedical Engineering, University of Illinois at Chicago, Chicago, IL, United States, 3Departments of Radiology and Neurosurgery, University of Illinois at Chicago, Chicago, IL, United States

Synopsis

Studies on temporal diffusion characteristics can reveal a wealth of tissue microstructural information for disease evaluation, but typically require a long scan time because multiple diffusion times are need with each requiring a separate acquisition acquire. We herein report a time-efficient pulse sequence that acquires multiple diffusion-weighted images with different diffusion times in a single shot by utilizing multiple stimulated echoes with variable flip angles. This technique has been implemented on a 3T human scanner and successfully demonstrated in a quantitative diffusion phantom, the human brain gray and white matters, and the prostate peripheral zone and central grand.

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Keywords