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

Table 2 CT acquisition parameters

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

ISSN: 1471-2342