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Abstract #2465

rOi-Space: Accelerated imaging of sub-volumes using ROI focused O-Space

Emre Kopanoglu 1 , Haifeng Wang 1 , Yuqing Wan 1 , Dana C. Peters 1 , Gigi Galiana 1 , and Robert Todd Constable 1

1 Diagnostic Radiology, Yale University, New Haven, Connecticut, United States

Nonlinear gradient fields encode spatial information along multiple directions simultaneously. Using a receiver-array, the spatial information along different directions can be recovered. O-Space imaging exploits this idea to perform accelerated data acquisitions. In standard O-Space imaging, the full field-of-view is encoded, which results in acquisition of redundant data when the region-of-interest is a sub-volume. In this study, we propose a novel O-Space implementation that focuses the encoding effort to the region-of-interest. With a typical O-Space acquisition, the acceleration factor may exceed the number of receiver coils whereas the proposed method can further reduce the imaging time by up-to 25%.

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