MR imaging of spleen in beta-thalassemia major
- نوع فایل : کتاب
- زبان : انگلیسی
- مؤلف : Olympia Papakonstantinou, Eleni E. Drakonaki, Tomas Maris, Artemis Vasiliadou, Alex Papadakis, Nicholas Gourtsoyiannis
- چاپ و سال / کشور: 2006
Description
Purpose: Splenomegaly and splenic siderosis are wellknown findings in beta-thalassemia major. We explored the relation between splenic size, splenic and hepatic siderosis in transfusion-dependent beta-thalassemic patients, assessed by MR imaging. Materials and methods: Abdominal MR imaging studies of 47 consecutive thalassemic patients and 10 healthy subjects, used as controls, were retrospectively reviewed. The signal intensity ratios of spleen and liver to the right paraspinous muscle (S/M, L/M, respectively) were calculated on T1, intermediate, and T2*-weighted gradientecho sequences, splenic volume was estimated on axial images and serum ferritin levels were recorded. Results: Decreased S/M on all MR sequences was displayed in 36 patients. Six patients presented with normal S/M on all MR sequences and 5 patients displayed splenic hypointensity only on T2* sequence. No correlation between S/M and L/M was found whereas both L/M and S/M correlated with serum ferritin (P < 0.03). Splenic volume correlated to L/M (P < 0.05) but not to S/M values. Conclusion: In transfusion-dependent patients with betathalassemia, iron deposition in spleen cannot be predicted by the degree of hepatic siderosis, whereas splenomegaly relates to liver, but not splenic, iron overload. MR imaging can be a valuable tool in elucidating iron kinetics.
Abdom Imaging (2006) DOI: 10.1007/s00261-006-9138-4
