Table 2. Summary of measured ADCmean by magnetic field strength and breast histopathology.
Lesion status | Field strength | N [%] | ADCmean ×10–3 mm2/s (standard deviation) | P value | |
---|---|---|---|---|---|
b =1,000 | b =1,500 | ||||
Benign lesion | All | 18 [100] | 1.46 (0.30) | 1.31 (0.29) | <0.0001 |
1.5 T | 12 [67] | 1.43 (0.35) | 1.27 (0.33) | 0.0023 | |
3 T | 6 [33] | 1.53 (0.16) | 1.39 (0.17) | 0.0030 | |
Malignant lesion | All | 33 [100] | 0.96 (0.24) | 0.85 (0.23) | <0.0001 |
1.5 T | 24 [70] | 0.94 (0.25) | 0.82 (0.23) | <0.0001 | |
3 T | 9 [30] | 1.00 (0.25) | 0.92 (0.25) | 0.0099 | |
Normal breast | All | 126 [100] | 1.50 (0.21) | 1.33 (0.19) | <0.0001 |
1.5 T | 86 [68] | 1.49 (0.22) | 1.31 (0.20) | <0.0001 | |
3 T | 40 [32] | 1.54 (0.18) | 1.37 (0.15) | <0.0001 |
ADC, apparent diffusion coefficients.