Figure 1.

The ADC_mean values calculated using two different b values for different types of lesions. Error bars correspond to the 95% confidence interval of the average ADC_mean. Malignant lesions demonstrated lower ADC_mean values than benign lesions or normal breast tissue regardless of the selected b values. DWI images at b value =1,500 s/mm² yielded significantly lower average ADC_mean values than b value =1,000 s/mm² for all breast tissue types. ADC, apparent diffusion coefficients; DWI, diffusion-weighted imaging.