Macroscopic heterogeneity of liver fat: an MR-based study in type-2 diabetic patients.

European Radiology
Violaine CapitanBoris Guiu

Abstract

To assess the heterogeneity of liver fat deposition with MR of the liver in type-2 diabetic (T2D) patients. We enrolled 121 consecutive T2D patients. The reference standard was 3.0-T (1)H-MR spectroscopy. Hepatic steatosis was defined as liver fat content (LFC) ≥5.56 %. A triple-echo gradient-echo sequence corrected for T1 recovery and T2* decay was used to calculate LFC in left and right livers and hepatic segments. Analyses were performed using a linear mixed model. Fifty-nine (48.8 %) patients had liver steatosis, whereas 62 (51.2 %) did not. Steatosis was greater in the right than in the left liver (P < 0.0001) [mean difference: 1.32 % (range: 0.01-8.75 %)]. In seven patients (5.8 %), LFC was <5.56 % in one side of the liver, whereas it was ≥5.56 % in the other. Steatosis of the left and right liver was heterogeneous at the segmental level in both non-steatotic (P < 0.001 and P < 0.0001 respectively) and steatotic (P < 0.0001 and P = 0.0002 respectively) patients [mean maximum difference: 3.98 % (range: 0.74-19.32 %)]. In 23 patients (19 %), LFC was <5.56 % in one segment, whereas it was ≥5.56 % in at least one other. Overall, the mean segmental/lobar variability of steatosis is low. However, segment...Continue Reading

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