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Abstract #2021

Simultaneous MR Neurography and Quantitative Mapping of the Lumbar Plexus Using Point-Spread-Function Encoded EPI

Sisi Li1, Zhangxuan Hu1, Yishi Wang2, and Hua Guo1
1Department of Biomedical Engineering, Center for Biomedical Imaging Research, Beijing, China, 2Philips Healthcare, Beijing, China

The combination of MR neurography (MRN) and comprehensive quantitative MRI is of great clinical significance for pathological analysis of peripheral nerves. This study aims to investigate simultaneous MRN, T2, T2* mapping of lumbar plexus by using a distortion-free multishot technique, Point-Spread-Function Encoded EPI (PSF-EPI). Particularly, the quantitative T2 and T2* mapping are conducted by using the multiple echo-shifted intermediate images of PSF-EPI. Also, PSF-EPI can be highly accelerated by the titled-CAIPI acquisition scheme. The acquisition time can be reduced to around 2 minutes. The efficacy of PSF-EPI is demonstrated on healthy volunteers and patients.

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