All patients underwent pancreatic MRI. Pancreatic R2* relaxometry was performed on a 1.5 T MR scanner (Intera, Philips Medical Systems, Best, The Netherlands) with a 4-channel SENSE body coil. Pancreatic FF measurement was performed on a 3.0 T MR scanner (Achieva, Philips Medical Systems, Best, The Netherlands) with a 16-channel SENSE torso coil. All patients underwent pancreatic R2* measurements, and 40 of them underwent FF measurements randomly. For pancreatic R2* relaxometry, 16-echo gradient-echo imaging was performed to measure T2* values. This sequence was performed with the additional application of chemically selective fat suppression (CHESS), which takes advantage of the difference in resonant frequencies between water and fat. The detailed acquisition parameters were as follows: 2D acquisition, no SENSE, voxel size 2.5×3.1×10 mm3, field-of-view (FOV) 400×200 mm2, repetition time (TR) 200 ms, echo times (TE) ranging from 0.84 to 14.69 ms, ΔTE =0.92 ms, flip angle 20°, single breath-hold of 16 seconds, number of slices 3, set separately on the pancreatic head, body, and tail level. For pancreatic FF, 6-echo gradient-echo imaging was performed. The detailed acquisition parameters were as follows: 2D acquisition, no SENSE, voxel size 1.8×1.8×8.0 mm3, FOV 290×188 mm2, TR 16 ms, TE ranging from 1.4 to 3.9 ms, ΔTE =0.5 ms, flip angle 10°, single breath-hold of 12 seconds, number of slices 3, set separately on the pancreatic head, body, and tail level.

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