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. 2023 Feb 16;13(4):2568–2581. doi: 10.21037/qims-22-688

Figure 5.

Figure 5

Correlations between the Ki-67 index and (A) the diffusion coefficient, D (r=−0.271; P=0.023), (B) the pseudo diffusion coefficient, D* (r=−0.256; P =0.053), (C) the perfusion fraction, f (r=0.116; P=0.340), (D) the distributed diffusion coefficient (DDC; r=0.009; P=0.944), (E) the water molecular diffusion heterogeneity index, α (r=0.488; P<0.001), (F) the volume transfer constant, Ktrans (r=−0.409; P <0.001), (G) the volume of extravascular extracellular space per unit volume of tissue, Ve (r=0.216; P =0.072), and (H) the rate transfer constant, Kep (r=−0.534; P<0.001). D, diffusion coefficient; D*, pseudo diffusion coefficient; f, perfusion fraction; DDC, distributed diffusion coefficient; α, water molecular diffusion heterogeneity index; Ktrans, volume transfer constant; Ve, volume of extravascular extracellular space per unit volume of tissue; Kep, rate transfer constant.