Magnetom avanto mr

A 256-slice CT and 64-slice CT (Philips, iCT, Netherlands; GE, Light speed vCT, Wisconsin, USA) were used for CT examination. The contrast agent iohexol (BeiLu Pharmaceutical AG, China) was injected through the elbow vein (approximately 80 mL per patient on average) at an injection flow rate of 3.0 mL/s. A 1.5 T magnetic resonance (MR) system (Siemens, Magnetom Avanto MR, Germany) was used for MR examination. The contrast agent meglumine gadolinium (Magnevist, Bayer AG, Germany) was injected through the elbow vein (approximately 20 mL per patient on average) at an injection flow rate of 1.5–2.0 mL/s. The CT and MR scans were obtained at the end of inhalation during scanning. The scanning was performed from the diaphragm to the anterior superior iliac spine. The slice thickness was 5 mm.
A colour Doppler ultrasound diagnostic apparatus (GE, LOGIQ E9, Wauwatosa, USA; SuperSonic, Aixplorer V, Les Jardins de la Duranne, France) was used for ultrasound examination. A convex array probe with a frequency of 3.0–5.0 MHz was adopted. Conventional two-dimensional and colour Doppler ultrasonography were performed. The patient was placed in the supine and left lateral position with the upper abdomen fully exposed.