Figure 7
From: Rapid T1 quantification based on 3D phase sensitive inversion recovery
The absolute relaxation rate R 1 as a function of time for liver tissue and fat. The R 1 as a function of time after Gd administration is shown for the 2 ROI's E and F, as indicated in slice 13a in Fig. 5. The proposed method (squares) is compared to the Look-Locker method (triangles). ROI E is positioned in subcutaneous fat (open labels), ROI F is positioned on the liver (filled labels). Fat has a stable R 1 = 4.8 ± 0.1 s-1 while the relaxation rate of the liver decreases towards the dashed-dotted line which is the reference R 1 = 1.3 ± 0.2 s-1, obtained by our method before Gd injection. The Look-Locker method obtained a reference liver R 1 = 1.3 ± 0.4 s-1.