The diagnostic performance of version 2018 LI?RADS for hepatocellular carcinoma on Gd?EOB?DTPA enhanced MRI / 中华放射学杂志

ABSTRACT

Objective To explore the diagnostic performance of the most recent 2018 version of liver reporting and data system (LI?RADS) on gadolinium?ethoxybenzyl?diethylenetriamine pentaacetic acid (Gd?EOB?DTPA) enhanced MRI to diagnose hepatocellular carcinoma (HCC) in high?risk patients. Methods From July 2015 to September 2018, 130 consecutive high?risk patients with 134 focal liver lesions were retrospectively enrolled in our center and underwent Gd?EOB?DTPA?enhanced MRI and subsequent hepatectomy within 1 month. Two independent radiologists blindly reviewed the preoperative MR images of all patients, and determined the presence of major features, ancillary features and the LI?RADS categories according to the version 2018 LI?RADS of each liver observation. The sensitivity, specificity, positive predictive value, negative predictive value, Youden index and accuracy of the 2018 version of LI?RADS were evaluated with postoperative histopathological results as references. The inter?observer agreement between the two radiologists was tested by Kappa analysis. Results The Kappa value of the LI?RADS categories between two radiologists was 0.628 (95%CI 0.565 to 0.691). The sensitivity, specificity, Youden index values and accuracy of LR?5 by the two reviewers were 80.4% (78/97), 87.6% (85/97); 75.7% (28/37), 73.0% (27/37); 0.560 8, 0.605 9; 79.1% (106/134), 83.6% (112/136), respectively. These measures of LR?4+LR?5 were 91.8% (85/97), 96.9% (94/97); 67.6% (25/37), 67.6% (25/37); 0.605 9, 0.644 6; 82.1% (110/134), 88.8% (119/134), respectively. Conclusion Version 2018 LI?RADS demonstrated high sensitivity and accuracy to diagnosis HCC in high?risk patients on Gd?EOB?DTPA enhanced MRI.