Fig. 1

Decision trees of all evaluated strategies namely (a) EUA for all patients, (b) PET-CT prior to EUA, (c) DW-MRI prior to EUA and (d) PET-CT as well as DW-MRI prior to EUA. The end node depicts the diagnostic status of the patient, i.e. true positive (TP), false negative (FN), false positive (FP) or true negative (TN), as well as the costs associated with that specific branch