Table 1.
Imaging protocol.
| MRI parameters (Magnetom Avanto, Siemens 1.5 T) | T1WI | T2WI | Chemical T1WI shift | DWI |
|---|---|---|---|---|
| Repetition time (ms) | 5.77 | 4500 | 166 | 3000 |
| Echo time (ms) | 2.77 | 92 | 4.4/2.2 | 69 |
| Section thickness (mm) | 2.5 | 8 | 8 | 8 |
| Matrix size | 192×160 | 256×256 | 192×160 | 128×128 |
| Intersection gap (mm) | 2 | 2 | 2 | 2 |
| Receiver bandwidth (kHz) | 64 | 32 | 64 | 64 |
| b-Values (s/mm2) | NA | NA | NA | 0 & 750 |
| Contrast agent used | Gadopentate dimeglumine | NA | NA | NA |
| (intravenous) | (Magnevist, Bayer, NJ) | |||
| Dosage (mmol/kg) | 0.1 | NA | NA | NA |
| Phases | Hepatic arterial: 20 s | NA | NA | NA |
| Portal venous: 70 s | ||||
| Delayed: 3 min | ||||
| Field of view (mm) | 320–400 | 320–400 | 320–400 | 320–400 |
| CT parameters | Unenhanced CT (Sensation 64 scanner, Siemens) | Contrast enhanced CT | ||
| Peak tube voltage (kVp) | 120 | 120 | ||
| Tube current (mA) | 250 | 250 | ||
| Detector collimation (mm) | 0–6 | 0–6 | ||
| Section thickness (mm) | 5 | 5 | ||
| Interval (mm) | 5 | 5 | ||
| Agent used | NA | Visipaque 320 or Omnipaque 350 (iodinated contrast, GE healthcare, Waukesha WI, USA) | ||
| Dosage (ml) | NA | 100–120 | ||
| Phases | NA | Arterial: 25–30 s | ||
| Portal venous: 60 s | ||||
MRI, magnetic resonance imaging; WI, weighted imaging; DWI, diffusion-weighted image; NA, not applicable; CT, computed tomography.