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The Efficacy of MRI in the diagnostic workup of cystic fibrosis-associated liver disease: A clinical observational cohort study

Authors
  • Poetter-Lang, Sarah1
  • Staufer, Katharina2
  • Baltzer, Pascal1
  • Tamandl, Dietmar1
  • Muin, Dina1
  • Bastati, Nina1
  • Halilbasic, Emina2
  • Hodge, Jacqueline C.1
  • Trauner, Michael2
  • Kazemi-Shirazi, Lili2
  • Ba-Ssalamah, Ahmed1
  • 1 Medical University Vienna, General Hospital of Vienna (AKH), Department of Biomedical Imaging and Image-guided Therapy, Waehringer Guertel 18-20, Vienna, A-1090, Austria , Vienna (Austria)
  • 2 Medical University of Vienna, Division of Gastroenterology and Hepatology, Department of Internal Medicine III, General Hospital of Vienna (AKH), Vienna, Austria , Vienna (Austria)
Type
Published Article
Journal
European Radiology
Publisher
Springer-Verlag
Publication Date
Jul 27, 2018
Volume
29
Issue
2
Pages
1048–1058
Identifiers
DOI: 10.1007/s00330-018-5650-5
Source
Springer Nature
Keywords
License
Green

Abstract

PurposeTo identify independent imaging features and establish a diagnostic algorithm for diagnosis of cystic fibrosis (CF)-associated liver disease (CFLD) in CF patients compared to controls using gadoxetic acid-enhanced MRI.MethodsA total of 90 adult patients were enrolled: 50 with CF, 40 controls. The CF group was composed of two subgroups: a retrospective test subgroup (n = 33) and a prospective validation subgroup (n = 17). Controls (patients with normal liver enzymes and only benign focal liver lesions) were divided accordingly (27:13). MRI variables, including quantitative and qualitative parameters, were used to distinguish CFLD from controls using clinical symptoms, laboratory tests and Debray criteria. Disease severity was classified according to Child-Pugh and Albumin-Bilirubin (ALBI) scores. Fifteen qualitative single-lesion CF descriptors were defined. Two readers independently evaluated the images. Univariate statistical analysis was performed to obtain significant imaging features that differentiate CF patients from controls. Through multivariate analysis using chi-squared automatic interaction detector (CHAID) methodology the most important descriptors were identified. Diagnostic performance was assessed by receiver-operating characteristic (ROC) analysis.ResultsThree independent imaging descriptors distinguished CFLD from controls: (1) presence of altered gallbladder morphology; (2) periportal tracking; and (3) periportal fat deposition. Prospective validation of the classification algorithm demonstrated a sensitivity of 94.1% and specificity of 84.6% for discriminating CFLD from controls. Disease severity was well associated with the imaging features.ConclusionsA short unenhanced MRI protocol can identify the three cardinal imaging features of CFLD. The hepatobiliary phase of gadoxetic acid-enhanced MRI can define CFLD progression.Key Points• Using a multivariate classification analysis, we identified three independent imaging features, altered gallbladder morphology (GBAM), periportal tracking (PPT) and periportal fat deposition (PPFD), that could diagnose CFLD with high sensitivity, 94.1 % (95% CI: 71.3–99.9) and moderate specificity, 84.6 % (95% CI: 54.6–98.1).• Based upon the results of this study, gadoxetic acid-enhanced MRI with DWI is able to diagnose early-stage CFLD, as well as its progression.

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