Spectral CT Analysis of Solitary Pulmonary Nodules for Differentiating Malignancy from Benignancy: The Value of Iodine Concentration Spatial Distribution Difference
Table 2
Quantitative assessment of IC and standard deviation of iodine concentration in PP, AP, and VP.
Group
dNIC
PP
Malignant nodules
(0.67,0.41, 1.19)
(0.43, 0.22, 0.64)
(0.31, 0.11, 0.57)
Benign nodules
(0.38, 0.19, 0.82)
(0.53,0.36,1.29)
(-0.26, -0.5, -0.1)
P value
0.037
0.093
p≤0.001
AP
Malignant nodules
0.283 ±0.165
0.190 ±0.117
0.093 ±0.094
Benign nodules
0.183 ±0.081
0.258 ±0.094
-0.075 ±0.060
P value
0.012
0.024
p≤0.001
VP
Malignant nodules
0.577±0.199
0.406±0.142
0.171±0.137
Benign nodules
0.407±0.247
0.591±0.247
-0.183±0.127
P value
0.005
0.004
p≤0.001
PP, pulmonary phase; AP, arterial phase; VP, venous phase; , normalized iodine concentration in the proximal region; , normalized iodine concentration in the distal region; dNIC, -.
