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Table 2 CT acquisition parameters

From: Three-dimensional drip infusion CT cholangiography in patients with suspected obstructive biliary disease: a retrospective analysis of feasibility and adverse reaction to contrast material.

Type of scanner Collimation Pitch Increment mAs kV Number of examinations
Single Slice 1 × 5.0 mm 1.5 1 mm 200 120 103
Multi-slice 4 × 2.5 mm 6 1 mm 130 120 46
Multi-slice 16 × 0.75 mm varying 0.5 mm 130 120 4