Predictive Ki-67 Proliferation Index of Cervical Squamous Cell Carcinoma Based on IVIM-DWI Combined with Texture Features

Figure 1

Example of manually drawing ROI for CSCC (Ki-67 PI, 30%). For IVIM-DWI measurement, on panel A (b = 800 s/mm²), two radiologists drew ROI three times to get the values on the maps of D, D, and f, respectively (panels B–D). For texture analysis, on panel E, the radiologists drew the ROI at the maximum area of the lesion in IVIM-DWI. ROI, region of interest; IVIM-DWI, intravoxel incoherent motion diffusion weighted imaging; PI, proliferation index; D, diffusion coefficient; D, pseudodiffusion coefficient; f, microvascular volume fraction.

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