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| NP severity | |||||
|---|---|---|---|---|---|
| Perfusion degree | N0 (n = 24) | N1 (n = 27) | N2 (n = 21) | N3 (n = 24) | |
| P0 (n = 54) | 23 | 22 | 9 | 0 | |
| P1 (n = 31) | 1 | 3 | 12 | 15 | |
| P2 (n = 11) | 0 | 2 | 0 | 9 | |
p < 0.00001 analyzed using a chi-squared test.
P0 = normal perfusion; P1 = decreased perfusion; P2 = poor perfusion; HL0 = no hypoechoic lesion; N0 = no necrosis; N1 = minimal necrosis; N2 = moderate necrosis; N3 = massive necrosis
