Table 4 Imaging Features at MRI and MDCT
Characteristic | Lesions number (%) | ||
|---|---|---|---|
MR | T1-weighed sequences | homogeneously hypointense | 489 (100.0%) |
T2-weighed sequences | central area of very high signal intensity | 350 (71.5%) | |
homogeneous hyperintense | 139 (28.4%) | ||
DWI | restricted diffusion | 489 (100.0%) median ADC 1.23 × 10–3 mm2/s | |
Gd-EOB MR Arterial phase | rim enhancement | 187 (38.2%) | |
hypointense | 302 (61.7%) | ||
Gd-EOB MR Portal phase | homogeneously hypointense | 406 (83.0%) | |
enhancing rim | 83 (16.9%) | ||
Gd-EOB MR transitional phase | low signal intensity compared to the surrounding parenchyma | 489 (100%) | |
HPB phase | homogeneously hypointense | 297 (60.7%) | |
target appearance | 192 (39.3%) | ||
MDCT | Unenhanced images | isoattenuating | 384 (100.0%) |
Arterial phase | isoattenuating | 201 (52.4%) | |
Portal and equilibrium phase | hypoattenuating | 183 (47.6%) | |
hypoattenuating | 384 (100.0%) |