Comparison of dynamic contrast-enhanced-magnetic resonance imaging parameters and serum markers in preoperative rectal cancer evaluation: Combined diagnostic value

Figure 3 Comparison of dynamic contrast-enhanced-magnetic resonance imaging parameters and serum tumor markers in rectal cancer patients among different T stages. A: Rate constant values of low and high T-stage groups; B: Volume transfer constant values of low and high T-stage groups; C: Volume fraction of extravascular extracellular space values of low and high T-stage groups; D: Serum carbohydrate antigen 19-9 levels of low and high T-stage groups; E: Serum carbohydrate antigen 125 levels of low and high T-stage groups in this study. Ktrans: Volume transfer constant; Kep: Rate constant; Ve: Volume fraction of extravascular extracellular space; CA: Carbohydrate antigen.