Table 2.
Perfusion characteristics of the hepatocellular carcinomas on CEUS.
| Perfusion | Number (%) | Mean±SD (sec) | t/χ2 | p |
|---|---|---|---|---|
| Rise Time | ||||
| group 1 | 16.1±2.7 | 1.38 | 0.09 | |
| group 2 | 15.1±3.5 | |||
|
| ||||
| Time to Peak | ||||
| group 1 | 31.3±3.1 | 0.54 | 0.30 | |
| group 2 | 30.9± 3.2 | |||
|
| ||||
| Washout Time | ||||
| group 1 | 191.0± 31.3 | 7.77 | <0.01 | |
| <4min | 16 (37.2%) | |||
| >4min | 27 (62.8%) | |||
| group 2 | 142.6± 16.1 | |||
| <4min | 25 (83.3%) | |||
| >4min | 5 (16.7%) | |||
|
| ||||
| Arterial Phase (group 1/group 2) | ||||
| Hyper-vascularity | 38 (88.4%)/28 (93.3%) | 0.502 | 0.479 | |
| Iso-vascularity | 5 (11.6%)/2 (6.7%) | |||
|
| ||||
| Portal Venous Phase (group 1/group 2) | ||||
| Iso-enhanced | 30 (69.8%)/5 (16.7%) | 19.965 | <0.01 | |
| Hypo-enhanced | 13 (30.2%)/25 (83.3%) | |||
|
| ||||
| Late phase (group 1/group 2) | ||||
| Iso-enhanced | 27 (62.8%)/5 (16.7%) | 15.27 | <0.01 | |
| Hypo-enhanced | 16 (37.2%)/25 (83.3%) | |||