Table 1.

Imaging characteristics

N	Computed tomography				Ultrasound
	Type of system	Slice thickness	i.v. contrast (ml)	Imaging dose	Convex Mhz	Linear Mhz
279	MDCT	3 mm	125	120 Kv, 165 mAs	4-5	7-8
32	MDCT	1.5	100	140 Kv, 200 mAs	5-2	12.5
285	MDCT	6.5	120	120 Kv, 165 mAs	8-5 en 5-2	12-5
180	MDCT	3	100	120 Kv, 165 mAs	5-2	12-5
108	MDCT	3	120	120 Kv, 80–140 mAs	5-2	12-5
137	MDCT	5 mm, 4 mma	120	120 Kv, 200–250 mAsb	5-2	4-7 and 5-12

^aSlice thickness was 5 or 4 mm at the PACS, and 1 mm at the CT workstation

^bDose adaptation was used