Table 3. Contrast results of MRI plain scan and contrast-enhanced scan between PCC and HG.
| Observed content | PCC groups (n=25) | HG groups (n=29) | Statistics | P value |
|---|---|---|---|---|
| MRI signal | – | 0.001 | ||
| Homogeneous | 9 | 24 | ||
| Heterogeneous | 16 | 5 | ||
| T1WI signal | – | 1.000 | ||
| Hypo-intense | 25 | 29 | ||
| Equal-intense | 0 | 0 | ||
| T2WI signal | – | 0.001 | ||
| Hyper-intense | 8 | 19 | ||
| Equal hyper-intense | 17 | 10 | ||
| DWI signal | – | 0.093 | ||
| Annular hyper-intense | 3 | 0 | ||
| Homogeneous | 22 | 29 | ||
| ADC value (×10−3 mm2/s) | 1.513±0.246 | 1.836±0.470 | −3.088 | 0.003 |
| Arterial stage presentation | – | 0.692 | ||
| Marginal enhancement | 21 | 26 | ||
| Uniform enhancement | 4 | 3 | ||
| Abnormal perfusion | – | 0.326 | ||
| Exist | 3 | 1 | ||
| No-exist | 22 | 28 | ||
| Intratumoral vascular transverse sign | – | 0.017 | ||
| Exist | 5 | 0 | ||
| No-exist | 20 | 29 |
Data are presented as No. or mean ± standard deviation. MRI, magnetic resonance imaging; TIWI, T1 weighted imaging; T2WI, T2 weighted imaging; DWI, diffusion weighted imaging; ADC, apparent diffusion coefficient; PCC, peripheral nodular cholangiocarcinoma; HG, hepatic hemangioma.