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Gutmann, D.A.P.* ; Rospleszcz, S. ; Rathmann, W.* ; Schlett, C.L.* ; Peters, A. ; Wachinger, C.* ; Gatidis, S.* ; Bamberg, F.*

MRI-derived radiomics features of hepatic fat predict metabolic states in individuals without cardiovascular disease.

Acad. Radiol. 28, 1, S1-S10 (2020)
DOI
Rationale and Objectives: To investigate radiomics features of hepatic fat as potential biomarkers of type 2 diabetes mellitus (T2DM) and metabolic syndrome (MetS) in individuals without overt cardiovascular disease, and benchmarking against hepatic proton density fat fraction (PDFF) and the body mass index (BMI). Materials and Methods: This study collected liver radiomics features of 310 individuals that were part of a case-controlled imaging substudy embedded in a prospective cohort. Individuals had known T2DM (n = 39; 12.6 %) and MetS (n = 107; 34.5 %) status, and were divided into stratified training (n = 232; 75 %) and validation (n = 78; 25 %) sets. Six hundred eighty-four MRI radiomics features were extracted for each liver volume of interest (VOI) on T1-weighted dual-echo Dixon relative fat water content (rfwc) maps. Test-retest and inter-rater variance was simulated by additionally extracting radiomics features using noise augmented rfwc maps and deformed volume of interests. One hundred and seventy-one features with test-retest reliability (ICC(1,1)) and inter-rater agreement (ICC(3,k)) of ≥0.85 on the training set were considered stable. To construct predictive random forest (RF) models, stable features were filtered using univariate RF analysis followed by sequential forward aggregation. The predictive performance was evaluated on the independent validation set with area under the curve of the receiver operating characteristic (AUROC) and balanced accuracy (AccuracyB). Results: On the validation set, the radiomics RF models predicted T2DM with AUROC of 0.835 and AccuracyB of 0.822 and MetS with AUROC of 0.838 and AccuracyB of 0.787, outperforming the RF models trained on the benchmark parameters PDFF and BMI. Conclusion: Hepatic radiomics features may serve as potential imaging biomarkers for T2DM and MetS.
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Publication type Article: Journal article
Document type Scientific Article
Corresponding Author
Keywords Diabetes Mellitus ; Fatty Liver ; Magnetic Resonance Imaging ; Metabolic Syndrome; Type-2 Diabetes-mellitus; Liver-disease; Cost-effectiveness; Blood-pressure; Risk; Prevention; Fraction; Tissue
ISSN (print) / ISBN 1076-6332
e-ISSN 1878-4046
Journal Academic radiology
Quellenangaben Volume: 28, Issue: , Pages: S1-S10, Article Number: , Supplement: 1
Publisher Elsevier Science Inc
Publishing Place Reston, VA
Non-patent literature Publications
Reviewing status Peer reviewed
Institute(s) Institute of Epidemiology II (EPI2)
Grants German Centre for Cardiovascular Disease Research
German Centre for Diabetes Research, Neuherberg
German Research Foundation DFG
State of Bavaria
German Federal Ministry of Education and Research BMBF