Fig. 1
A male patient with Hodgkin’s disease stage IIIE. PET/CT/MRI after two cycles of chemotherapy. Top: Axial PET shows very faint uptake in the anterior mediastinal lesion; axial WB-DW-MRI (b value = 800) shows restricted diffusion (calculated ADCmean = 0.96 × 10−3 mm2/s). Bottom: FDG-PET/CT and FDG-PET/MRI show a residual mediastinal mass without significant FDG activity. FDG-PET/CT and FDG-PET/MRI after the end of treatment confirmed complete response