The univariate regression correlation of each method Features Benign Mal Sum Inspection Method Dynamic 22 25, 9% 12 15, 0% 34 20, 6% p = 0, 13, 2 = 2, 29; OR = 1, 80; CI (0, 83 - 3, 87) Delay phase 63 74, 1% 68 85, 0% 131 79, 4% Contrast enhancement delay phase < 15 HU 36 42, 4% 12 15, 0% 48 29, 1% p < 0, 0001, 2 = 14, 9; OR = 4, 2; CI (1, 97 - 8, 81) ≥ 15 HU 49 57, 6% 68 85, 0% 117 70, 9% Contrast enhancement dynamic < 15 HU 7 31, 8% 2 16, 7% 9 35, 3% Fisher test = 0, 889 p = 0, 439 ≥ 15 HU 15 68, 2% 10 83, 3% 25 64, 7% Conclusion: In delay phase CT, strongly contrast enhancement lung nodules are 4.2 times more likely to be malignant than less, p <0.05.