Table 2. Dual-energy CT scanning parameters and post-processing.

CT Scanning parameters	Pre-contrast	Early arterial	Pancreatic	Portal venous
Voltage (kVp)	120	80	Dual energy (80/140)
Mean scanning delays after contrast injection (s)		26	40	70
Collimation (mm)	64×0.6		14×1.2
Rotation time (s)	0.5		0.5
Pitch	0.9		0.85
Kernel	B30f		D30f
Tube current (mAs)	150	210	80 (140 kVp tube)340 (80 kVp tube)