Table 2.
Relationship of contrast-enhanced ultrasound quantitative parameters between the two groups
| Parameters | Non-recurrence group (37) | Recurrence group (14) | t | P-value |
| tRT (s) | 23.2 ± 7.0 | 13.6 ± 6.1 | 4.517 | 0.000 |
| pRT (s) | 20.7 ± 10.2 | 18.5 ± 9.9 | 0.693 | 0.492 |
| tTTP (s) | 59.6 ± 14.2 | 41.2 ± 10.2 | 4.423 | 0.000 |
| pTTP (s) | 66.4 ± 17.3 | 56.8 ± 13.2 | 1.876 | 0.067 |
| tPI (%) | 31.4 ± 6.4 | 23.8 ± 6.7 | 3.737 | 0.000 |
| p-tTTP (s) | -6.3 ± 10.7 | -12.3 ± 10.2 | 1.809 | 0.077 |
| t-pPI (%) | 14.6 ± 7.4 | 7.1 ± 3.4 | 3.632 | 0.000 |
tRT: Tumor rise time; pRT: Parenchymal rise time; tTTP: Tumor time to peak; pTTP: Parenchymal time to peak; tPI: Tumor peak intensity; p-tTTP: Parenchymal-tumor time to peak; t-pPI: Tumor-parenchymal peak intensity.