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Abstract #3972

New Rapid 3D diffusion weighted imaging using 3D hybrid Radial-Echo Planar Imaging (RAZER) sequence

Seong-Eun Kim1, Henrick Carl Axel Odeen 1, John A Roberts1, and Dennis L Parker1
1UCAIR, Department of Radiology and Imaging Sciences, University of Utah, Salt Lake City, UT, United States

Synopsis

Keywords: Pulse Sequence Design, Diffusion/other diffusion imaging techniques, non-cartesian trajectory

Non-Cartesian sampling schemes offer advantages over Cartesian schemes. Recently 2D radial and 3D hybrid radial-Cartesian approaches such as 3D stack of stars have gained popularity. Despite of many advantages, the current hybrid trajectory is presently limited by drawbacks including the degradation of sampling efficiency and the k-space coverage per unit time for diffusion application. For more flexible, rapid, and motion-robust 3D DWI, we implemented a 3D hybrid radial-EPI(RZAER) sequence and demonstrated the feasibility of 3D diffusion weighted RAZER sequence for carotid vessel wall.

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Keywords