Fig. 5

Feature correlation coefficient plot. Note: Categorical variables were treated as dummy variables. Cross marks indicate no statistical significance between the two variables (p > .05); LN = Lymph node; 5 mm = Number of lymph nodes with long diameter ≥ 5 mm; 8 mm = Number of lymph nodes with long diameter ≥ 8 mm; 10 mm = Number of lymph nodes with long diameter ≥ 10 mm. Enhancement degree: Hyperenhancement or isoenhancement = 1; Hypoenhancement = 0. Hypoattenuation-within-tumour ratio: < 1/3 = 1; 1/3–2/3 = 2; > 2/3 = 3. Enhancement pattern: Inhomogenous = 1; Homogenous = 0. CEA status: Positive = 1; Negative = 0. Tumour deposit: Positive = 1; Negative = 0. Peritoneal metastasis: Positive = 1; Negative = 0. Lympho-vascular invasion: Positive = 1; Negative = 0. Perineural invasion: Positive = 1; Negative = 0. Mucinous component: Yes = 1; No = 0. Stage: I = 1; II = 2; III = 3; IV = 4. M stage: M1 = 1; M0 = 0. N stage: N1 + N2 = 1; N0 = 0. T stage: T1 = 1; T2 = 2; T3 = 3; T4 = 4. Sex: Male = 1; Female = 2. Tumour location: Right-hemi colon = 1; Left-hemi colon = 2