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Abstract #0507

Volumetric T2-Weighted Spin-Echo MRI with Improved SNR Using Localized Quadratic Encoding

Dahan Kim1, Dinghui Wang1, Tzucheng Chao1, and James G Pipe1
1Department of Radiology, Mayo Clinic, Rochester, MN, United States


T2-weighted imaging typically employs either TSE or multi-pass 2D SE acquisitions, but using a thick slice and/or a slice gap is often necessary to overcome SNR inefficiencies of these methods, to achieve high-resolution scans in reasonable scan time. We studied efficient T2-weighted SE technique which employed localized quadratic encoding to realize SNR-efficient slice encoding scheme that produced contiguous volumetric coverage. Combined with long-readout spiral acquisitions, the proposed method, a hybrid of 2D and 3D imaging, demonstrated the expected SNR benefit compared to standard 2D scans and produced T2-weighted images with SNR equivalent as 2D-TSE scans but with larger, contiguous coverage.

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