Abstract #4193

Three-dimensional reduced field-of-view imaging (3D-rFOVI)

Kaibao Sun¹, Zheng Zhong^1,2, Guangyu Dan^1,2, Muge Karaman^1,2, Qingfei Luo¹, and Xiaohong Joe Zhou^1,2,3

¹Center for MR Research, University of Illinois at Chicago, Chicago, IL, United States, ²Department of Bioengineering, University of Illinois at Chicago, Chicago, IL, United States, ³Departments of Radiology and Neurosurgery, University of Illinois at Chicago, Chicago, IL, United States

Reduced field-of-view (rFOV) imaging has been achieved in 2D imaging. Although 2D rFOV can reduce image distortion and produce high in-plane resolution in EPI, the through-plane resolution remains poor and signal voids persist. We report a 3D reduced field-of-view imaging (3D-rFOVI) sequence to extend the conventional 2D rFOV imaging to 3D by using a slab-selection 2D RF pulse in conjunction with through-slab phase-encoding. This sequence features high isotropic spatial resolution in EPI images while reducing off-resonance effects that cause image distortion and signal voids. We have successfully applied the 3D-rFOVI technique to fMRI and DWI.

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