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Results of the diagnostic performance analysis. The receiver operating characteristic (ROC) curves, derived from the ratings of the two readers for the detection of portal vein thrombosis, were highest for 40 keV noise-optimized virtual monoenergetic imaging (VMI+) series (AUC, 0.99) compared to 60 keV VMI+ (AUC, 0.97), 60 keV VMI (AUC, 0.95), and M_0.6 image reconstructions (AUC, 0.94) (p < 0.01).
