ArticleAbdominal radiology (New York)2026
Reproducibility and accuracy of non-contrast abbreviated magnetic resonance imaging of the liver in surveillance for early recurrence for hepatocellular carcinoma in a Western population: a multi-reader study.
Article in Abdominal radiology (New York), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
purposeAbbreviated MRI (AMRI) protocols may represent an alternative to conventional MRI (CMRI) for surveillance of hepatocellular carcinoma (HCC). We aimed to compare the inter-reader agreement and sensitivity of AMRI versus CMRI for HCC recurrence < 2 years after curative ablation in at risk-population.
methodsEight radiologists (4 with < 5 years' and 4 with ≥ 5 years' experience) from three institutions reviewed a retrospective serie of 143 CMRI and AMRI from 75 cirrhotic patients (84% HCV and/or alcohol-related) undergoing secondary screening after HCC ablation in a blinded and independent manner, with imaging assessments separated by 1-3 month. We calculated the intra and inter-reader agreement by means Gwet's AC1 for detection of local recurrence at the ablation site, new intrahepatic, and any type of recurrence (either local and/or new intrahepatic) with CMRI and AMRI. Reference diagnoses of recurrent HCC were based on histological or imaging-based criteria.
resultsEarly HCC recurrence was detected in 37 (49.3%), including 12 local recurrence, 21 new intrahepatic lesions, 4 had both local recurrence and new intrahepatic lesions. Inter-reader agreement was similarly high for AMRI and CMRI for local recurrence [0.87 (0.83‒0.90) vs. 0.87 (0.83‒0.92)], but higher for AMRI than for CMRI for new intrahepatic [0.85 (0.81‒0.9) vs. 0.6 (0.52‒0.67)] and any type [0.73 (0.67‒0.78) vs. 0.56 (0.49‒0.64)] recurrences. Sensitivity for detecting any type of HCC recurrence was higher for CMRI [0.83 (0.78‒0.87) vs. 0.39 (0.33‒0.45) for AMRI, p < 0.0001].
conclusionsCompared to CMRI, non-contrast AMRI showed higher inter-observed agreement but with very low sensitivity for early detection of HCC recurrence in a cohort with predominantly HCV and/or alcohol related cirrhosis, making it not suitable for this purpose.
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