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Fig. 2 —26-year-old man with ß-thalassemia and severe iron
overload (serum ferritin, 3,200 ng/mL). T1-weighted gradient-echo image shows
hypointense lymph nodes at porta hepatis (arrow) with signal
intensities equal to that of liver. Spleen is enlarged but is less hypointense
than liver—that is, with less iron deposition. Lymph node-to-muscle
signal intensity (SI) ratio is 0.06; liver-to-muscle SI ratio, 0.055; and
spleen-to-muscle SI ratio, 0.64.
