Table 3 Comparison of DWI parameters between patients with normal placenta and patients with PAS disorders (n = 92)
parameters | Patients with PAS disorders | Patients with normal placenta | P value | ||
|---|---|---|---|---|---|
Whole placenta | Accreta lesions | Whole placenta | WP-normal vs WP-PAS | AP vs WP-normal | |
Standard DWI parameters | |||||
 ADC mean (×10− 3 mm2/s) | 1.55 (0.08) | 1.56 (0.09) | 1.51 (0.12) | 0.076 | 0.180 |
 ADC min (×10−3 mm2/s) | 0.27 (0.39) | 0.51 (0.46) | 0.40 (0.32) | 0.061 | 0.265 |
 ADCmax (×10−3 mm2/s) | 2.43 (0.24) | 2.29 (0.24) | 2.49 (0.26) | 0.094 | 0.000 |
 eADC mean | 0.09 (0.01) | 0.09 (0.01) | 0.10 (0.02) | 0.099 | 0.155 |
 eADC min | 0.01 (0.01) | 0.02 (0.01) | 0.01 (0.01) | 0.394 | 0.055 |
 eADC max | 0.67 (0.32) | 0.46 (0.38) | 0.53 (0.29) | 0.096 | 0.522 |
DKI parameters | |||||
 MD mean (×10−3 mm2/s) | 3.17 (0.39) | 3.15 (0.47) | 2.92 (0.26) | 0.005 | 0.005 |
 MD min (×10− 3 mm2/s) | 0.26 (0.56) | 0.71 (0.84) | 0.44 (0.76) | 0.034 | 0.21 |
 MD max (×10−3 mm2/s) | 7.41 (0.92) | 7.14 (1.19) | 7.12 (0.56) | 0.000 | 0.29 |
 MK mean | 0.52(0.04) | 0.52 (0.04) | 0.53 (0.04) | 0.032 | 0.041 |
 MK min | 0 (0) | 0 (0) | 0 (0) | N/A | N/A |
 MK max | 1.68 (1.50) | 1.23 (0.75) | 1.87 (1.52) | 0.47 | 0.032 |
IVIM parameters | |||||
 f mean (%) | 43.89 (4.65) | 43.18 (8.36) | 41.59 (4.50) | 0.010 | 0.041 |
 f min (%) | 0 (0) | 0 (0) | 0 (0) | N/A | N/A |
 f max (%) | 100 (0) | 100 (0) | 100 (0) | N/A | N/A |
 D mean (×10−3 mm2/s) | 1.65 (0.08) | 1.67 (0.12) | 1.59 (0.13) | 0.000 | 0.000 |
 D min (×10−3 mm2/s) | 0.31 (0.48) | 0.54 (0.53) | 0.37 (0.50) | 0.067 | 0.186 |
 D max (×10−3 mm2/s) | 2.44 (0.21) | 2.27 (0.22) | 2.52 (0.29) | 0.000 | 0.000 |
 D* mean (×10−3 mm2/s) | 36.0 (9.04) | 38.31 (11.18) | 30.34 (11.58) | 0.012 | 0.000 |
 D* min (×10−3 mm2/s) | 0 (0.02) | 0.29 (0.65) | 0 (0) | N/A | N/A |
 D* max (×10−3 mm2/s) | 100 (0) | 100 (0) | 100 (0) | N/A | N/A |