Table 5 Distribution of quantitative Zeff of unenhanced image, attenuation, NIC and Rho parameters among different pT staging in arterial and venous phases
Parameter | pT1-2 | pT3-4 | p | AUC (95% CI) | Sensitivity (%) (95% CI) | Specificity (%) (95% CI) | PPV (95% CI) | NPV (95% CI) | Accuracy (%) | Cutoff value |
|---|---|---|---|---|---|---|---|---|---|---|
Zeff | 7.51 ± 0.19 | 7.49 ± 0.18 | 0.64 | 0.51 (0.33 – 0.67) | 96.97 (84.2 – 99.9) | 22.22 (6.40 – 47.6) | 69.60 (54.20 –82.30) | 80.00 (28.40 –99.50) | 66.67 | 7.69 |
Attenuation(arterial) | 184.06 ± 54.53 | 171.90 ± 46.63 | 0.41 | 0.57 (0.42 –0.71) | 83.87 (66.30 –94.5) | 50.00 (26.00 –74.00) | 74.30 (56.70 –87.50) | 64.30 (35.10 –87.20) | 71.42 | 203.63 |
Attenuation(venous) | 236.49 ± 40.81 | 224.23 ± 53.75 | 0.41 | 0.61 (0.45 ~ 0.77) | 59.38 (40.60 –76.30) | 70.59 (44.00 –89.70) | 78.30 (56.30 –92.50) | 50.00 (29.90 –70.10) | 63.26 | 223.97 |
NIC (arterial) | 2.29 ± 1.14 | 1.75 ± 0.50 | 0.02* | 0.63 (0.45 –0.81) | 96.87 (83.80 –99.90) | 41.18 (18.40 –67.10) | 74.40 (58.80 –86.50) | 87.50 (47.30 –99.70) | 78.43 | 2.55 |
NIC (venous) | 2.90 (2.67, 3.45) | 2.30 (1.9, 2.95) | 0.01* | 0.72 (0.58 –0.86) | 59.38 (40.60 –76.30) | 82.35 (56.60 –96.20) | 87.00 (66.40 –97.20) | 53.60 (33.90 –72.50) | 68.62 | 2.55 |
Rho(arterial) | 37.75 (27.45, 45.25) | 43.90 (39.8, 47.7) | 0.01* | 0.72 (0.67 –0.88) | 100 (89.40 –100.0) | 38.89 (17.30 –64.30) | 75.00 (59.70 –86.80) | 100.00 (59.00 –100.00) | 72.54 | 41.65 |
Rho(venous) | 31.66 ± 8.51 | 42.23 ± 5.60 | 0.00* | 0.84 (0.73 –0.96) | 91.12 (71.00 –96.50) | 67.54 (38.30 ~ 85.80) | 81.60 (65.70 –92.30) | 84.6 (54.60 –98.10) | 82.35 | 35.35 |