TABLE 3

Comparison of 18F-FDG PET (Early Imaging, Delayed Imaging, and RI), 201Tl SPECT, and CT Results for Lymph Node Staging of Malignancy (Including 49 Cases of Lung Cancer)

Modality (%)N0N1N2N3SensitivitySpecificityOverall accuracy
CT24/35 (68.6)—6/13 (46.2)0/2 (0.0)5/15 (33.3)24/35 (68.6)30/50 (60.0)*
201Tl SPECT27/35 (77.1)—7/13 (53.8)1/2 (50.0)8/15 (53.3)27/35 (77.1)35/50 (70.0)*
18F-FDG PET
 Early imaging22/35 (62.9)—11/13 (84.6)2/2 (100.0)13/15 (86.7)22/35 (62.9)†35/50 (70.0)*
 Delayed imaging32/35 (91.4)—12/13 (92.3)2/2 (100.0)14/15 (93.3)32/35 (91.4)46/50 (92.0)

  • ↵* P < 0.05 vs. accuracy of 18F-FDG PET delayed imaging (using RI).

  • ↵† P < 0.05 vs. specificity of 18F-FDG PET delayed imaging (using RI).