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Abstract #4092

Further Exploration of MRI Techniques for Liver T1rho Quantification

Feng Zhao1, Jing Yuan1, Min Deng1, Yi-Xiang Wang1

1Department of Imaging and Interventional Radiology, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong

In our previous liver T1rho MR imaging, the rotary-echo spin-lock pulse was used for T1rho preparation, and NSA was 2. The method described by Dixon et al. [MRM 1996; 36:90-4. MRI 2011; 29:608-19], proposed to reduce sensitivity to B0 field inhomogeneity in T1rho imaging, was implemented in this study. Images with NSA=1 and histogram measurement was also evaluated. The results showed Dixon method did not reduce artifacts for liver T1rho MR imaging. The histogram and manual ROI measurement provided similar liver T1rho value. While reducing the breathCholding duration significantly, NSA=1 did not offer satisfactory SNR.