Background: We assessed the usefulness of gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid enhanced magnetic resonance imaging for the prediction of posthepatectomy liver failure (PHLF) after a major hepatectomy.
Methods: We reviewed 140 cases involving a hepatectomy of two or more sections between 2010 and 2016 (study cohort). We used the standardized remnant hepatocellular uptake index (SrHUI) which was calculated by: SrHUI = future remnant liver volume × [(signal intensity of remnant liver on hepatobiliary phase images/signal intensity of spleen on hepatobiliary phase images) - 1]/body surface area. Validation of the SrHUI was performed in another cohort of 52 major hepatectomy cases between 2017 and 2018 (validation cohort).
Results: The SrHUI of patients with PHLF was significantly lower than that of non-PHLF cases. Receiver operating characteristic analysis and the Youden index revealed that the SrHUI cutoff value for the prediction of PHLF and PHLF grade ≥ B were 0.313 L/m2 and 0.257 L/m2 , respectively. In the validation cohort, the cutoff value of SrHUI for the prediction of PHLF or PHLF grade ≥ B had a sensitivity of 75.0% or 88.8%, and specificity of 78.1% or 91.6%, respectively.
Conclusions: The SrHUI value is a predictor for PHLF after a major hepatectomy.
Keywords: hepatectomy; liver resection; magnetic resonance imaging; posthepatectomy liver failure.
© 2020 Japanese Society of Hepato-Biliary-Pancreatic Surgery.