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Abstract #0839

Influence of hepatic steatosis on T1 values of the liver: Comparison of T1 mappings at different echo times

Masahiro Tanabe1, Mayumi Higashi1, Yosuke Kawano1, and Katsuyoshi Ito1
1Department of Radiology, Yamaguchi University Graduate School of Medicine, Ube, Japan

Synopsis

Keywords: Liver, Liver, T1 mapping, hepatic steatosis

Motivation: In evaluating T1 values in patients with hepatic steatosis, it is necessary to investigate the effect of fat because MOLLI is sensitive to fat.

Goal(s): To elucidate the clinical importance of MOLLI T1 mapping of the liver using TE=1.8 (AIOP) sequence in daily practice.

Approach: In 122 patients with suspected liver diseases, MOLLI T1 mapping with TE=1.8 (AIOP) was compared with that with TE=1.3 (OP) and TE=2.4 (IP).

Results: The positive correlation with high correlation coefficient between T1 value of the liver in AIOP sequence and FIB-4 score was observed in patients with hepatic steatosis (PDFF ≥10%).

Impact: T1 mapping using AIOP sequence will be critical for assessing liver fibrosis in patients with hepatic steatosis since T1 mapping obtained by OP and IP sequences have risk of over- and under-estimation of T1 measurements.

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