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Breast MRI of a 43-year-old female with invasive mammary carcinoma. (A) DWI image at the level of a known mass acquired with b value =1,000 s/mm2; (B) DWI image at the level of the known mass acquired with b value =1,500 s/mm2 showing lower signal to noise ratio by visual inspection; (C) the ADC map calculated using b value =1,500 s/mm2 with an overlying ~1 cm round region of interest. DWI, diffusion-weighted imaging; ADC, apparent diffusion coefficients.
