Ge discovery mr 750 3.0t

MRI was performed using the GE Discovery MR 750 3.0T (GE Discovery MR 750 3.0T, GE Healthcare, Milwaukee, WI, USA) superconducting scanning device with the abdominal phase controlled front coil. Axial fat-suppression T2WI, axial DWI, axial VIBE mask, axial VIBE three phase dynamic enhanced scan and hepatobiliary phase scan were performed. The contrast agent was Gd-BOPTA (Multihance, Bracco Imaging, Milano, Italy) via bolus injection through the elbow vein, with a dose of 0.1 mmol/kg and an injection flow rate of 2mL/s, and a wash with at least 20 mL physiological saline was performed at the same rate after injection of the contrast agent. Scanning at the early and late arterial phases, portal phase, and equilibrium phase was performed at 15–20 s, 35–40 s, 60 s and 180 s, respectively, after contrast injection. The HBP scanning was conducted 90-120 minutes later.

All patients were scanned with the same GE Discovery MR750 3.0 T magnetic resonance scanner (GE Medical Systems, Milwaukee, Wis., USA). Body-specific 32-channel phased-array coils were used. Plain liver MRI, IVIM-DWI, and dynamic enhancement scans were performed. The scanning sequences and parameters were the same as those used in our previous studies^{22 (link)}.