Predicting of Ki-67 Expression Level Using Diffusion-Weighted and Synthetic Magnetic Resonance Imaging in Invasive Ductal Breast Cancer

Figure 3

51-year-old female with invasive ductal carcinoma (IDC) of the right breast. Ki-67 expression was 50%. Axial contrast enhanced T1-weighted image (T1WI) showed an irregular heterogeneous enhancing mass with irregular margin (a) The quantitative parameters were measured on SyMRI-T2WI before ((b) pre-T1 = 1509 ms, pre-T2 = 80 ms, and pre-PD = 82 pu) and after ((c) post-T1 = 703 ms, post-T2 = 72 ms, and post-PD = 72.1 pu) administration of the contrast medium. Similar images are shown for the mass on precontrast ((d) T1 mapping, (e) T2 mapping, and (f) PD mapping) and postcontrast ((g) T1 mapping (h) T2 mapping, and (i) PD mapping) enhanced mapping images. The apparent diffusion coefficient (ADC) value was 0.763 × 10⁻³ mm²/s on the ADC map image (j).

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