Table 3.
Comparison of intergroup quantitative parameters of At-PI in thyroid nodules. T1: the earliest arrival time of the contrast agent; T2: the latest arrival time of the contrast agent; T3: the time when the contrast agent reached the central area of the lesion; T4: the time when the contrast agent reached the peripheral area of the lesion; T5: the time taken for the contrast agent to reach the lesion area;T6: the time taken for the contrast agent to reach the surrounding normal thyroid tissue at the same depth as the lesion. ΔT2-1=T2-T1; ΔT4-3=T4-T3; ΔT6-5=T6-T5.
| Benign (n=44) | Malignant (n=83) | t | P | |
|---|---|---|---|---|
| T1 | 10.730±2.803 | 11.108±2.265 | −0.765 | 0.446 |
| T2 | 16.622±5.413 | 16.956±4.633 | −0.336 | 0.737 |
| ΔT2-1 | 5.892±3.598 | 5.847±3.209 | 0.067 | 0.947 |
| T3 | 13.548±3.832 | 14.393±3.663 | −1.217 | 0.226 |
| T4 | 13.471±3.495 | 13.256±3.095 | 0.357 | 0.722 |
| ΔT4-3 | 0.076±1.671 | 1.136±1.868 | −3.153 | 0.002 |
| T5 | 12.950±3.488 | 14.049±3.00 | −1.852 | 0.066 |
| T6 | 12.039±2.473 | 12.109±1.885 | −0.178 | 0.859 |
| ΔT6-5 | 0.320±1.706 | 2.182±1.965 | −5.31 | <0.001 |