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Comparison of the grades by SMI and PDI
| PDI | SMI | Total | |||
|---|---|---|---|---|---|
| 0 | 1 | 2 | 3 | ||
| 0 | 402 | 90 | 7 | 0 | 499 |
| 1 | 1 | 62 | 10 | 0 | 73 |
| 2 | 0 | 0 | 0 | 0 | 0 |
| 3 | 0 | 0 | 0 | 0 | 0 |
| Total | 403 | 152 | 17 | 0 | 572 |
Difference between SMI and PDI is statistically significant (P < 0.01)
SMI superb microvascular imaging, PDI power Doppler imaging
