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Figure 3: A 49-year-old female with ductal carcinoma in situ. (a) Axial contrast-enhanced image showed a 1.7-cm irregular mass with heterogeneous enhancement in the lower-inner quadrant of the left breast. (b) Axial apparent diffusion coefficient map of the breast showed low signal of the tumor (arrow). (c) For measurement of apparent diffusion coefficient values, a single region of interest of 47 mm2 (circle) was manually placed within the mass lesion on apparent diffusion coefficient map. The measurement was repeated three times, and the apparent diffusion coefficient values were automatically generated, which were 1.20 × 10−3 mm2/s, 1.35 × 10−3 mm2/s, and 1.26 × 10−3 mm2/s, respectively. The apparent diffusion coefficient-min value for this patient was determined as 1.20 × 10−3 mm2/s

Figure 3: A 49-year-old female with ductal carcinoma <i>in situ</i>. (a) Axial contrast-enhanced image showed a 1.7-cm irregular mass with heterogeneous enhancement in the lower-inner quadrant of the left breast. (b) Axial apparent diffusion coefficient map of the breast showed low signal of the tumor (arrow). (c) For measurement of apparent diffusion coefficient values, a single region of interest of 47 mm<sup>2</sup> (circle) was manually placed within the mass lesion on apparent diffusion coefficient map. The measurement was repeated three times, and the apparent diffusion coefficient values were automatically generated, which were 1.20 × 10<sup>−3</sup> mm<sup>2</sup>/s, 1.35 × 10<sup>−3</sup> mm<sup>2</sup>/s, and 1.26 × 10<sup>−3</sup> mm<sup>2</sup>/s, respectively. The apparent diffusion coefficient-min value for this patient was determined as 1.20 × 10<sup>−3</sup> mm<sup>2</sup>/s