Figure 2.

¹⁸F-FDG PET-MR imaging in a female patient with pancolitis ¹⁸F-FDG PET-MR imaging revealed active pancolitis in a female patient with endoscopically moderate disease activity. The fecal levels of calprotecin, lactoferrin, PMN-e, S100A12 and EDN were 37.43, 46.92, 0.06, 90.14, 3.27, while the SUVmean was 1.93. According to the optimal cut-off values (Table 4), only EDN and SUVmean correctly predicted the endoscopically disease activity. (A) Hyperintense mucosal layer and wall thickness in the T₂ weighted imaging demonstrating mucosal edema in the ascending and descending colon (black arrows). (B) Hyperintense appearance of mucosal layer (white arrow) and adjacent comb sign indicating hyperemia in the contrast-supported T₁ weighted imaging with fat-saturation. (C) Fused imaging of PET and MR. (D) Hyperintensity of bowel wall shown in the b1000 of diffusion-weighted imaging. (E) PET. (F) Maximum intensity projection of PET in the coronal plane demonstrating enhanced ¹⁸F-FDG-uptake of the whole colorectumcompared to liver. EDN, eosinophil-derivedneurotoxin; ¹⁸F-FDG, ¹⁸F-fludeoxyglucose; PET, positronemission tomography; PMN-e, polymorphonuclear leukocyte elastase; SUVmean, mean value of maximum of standardized uptakevalue ratio gut/liver.