Comparison of Water R2 Spectroscopy Measures in the Liver at 1.5T and 3T

Using the HISTO sequence, which is a five-echo STEAM single voxel spectroscopy technique, we validate the linear relationship between liver R2 values at 3T and 1.5T and the value of the regression slope. Fourteen volunteers underwent a HISTO measurement at 1.5T and at 3T, and the voxel positioning was made consistent across the measurements. Possible applications for this study are the extrapolation of iron overload level classification at 1.5T to 3T based on the R2 values.

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