Application of Dynamic ¹⁸F-FDG PET/CT for Distinguishing Intrapulmonary Metastases from Synchronous Multiple Primary Lung Cancer

Table 5

Diagnostic results based on CT characteristics.

	Patient no.	Tumor 1	Tumor 2
sMPLC group	1	Primary	Primary	0.05	0.0025
	2	Primary	Unsure	1.06	0.0140
	3	Unsure	Unsure	1.20	0.0032
	4	Primary	Unsure	0.80	0.0030
	5	Primary	Primary	0.02	0.0019
	6	Primary	Primary	0.02	0.0008
	7	Primary	Primary	0.47	0.0028
	8	Unsure	Unsure	0.48	0.0007
	9	Primary	Unsure	2.16	0.0022
	10	Primary	Unsure	1.37	0.0004
	11	Primary	Primary	2.08	0.0093
	12	Primary	Unsure	0.96	0.0058
	13	Unsure	Primary	1.16	0.0004
	14	Primary	Primary	1.43	0.0094
	15	Primary	Primary	1.05	0.0014
	16	Primary	Primary	0.09	0.0012
	17	Primary	Primary	0.28	0.0003
	18	Primary	Unsure	0.73	0.0017
	19	Primary	Primary	0.22	0.0007
IPM group	1	Primary	Metastasis	0.15	0.0019
	2	Primary	Metastasis	2.91	0.0122
	3	Primary	Metastasis	3.65	0.0228
	4	Primary	Metastasis	1.02	0.0113
	5	Primary	Metastasis	4.72	0.0294
	6	Primary	Primary	1.43	0.0105
	7	Primary	Primary	0.05	0.0010
	8	Primary	Metastasis	1.66	0.0060
	9	Primary	Metastasis	2.33	0.0091
	10	Primary	Metastasis	0.13	0.0069
	11	Primary	Metastasis	0.31	0.0018
	12	Primary	Metastasis	1.17	0.0088
	13	Primary	Primary	3.17	0.0165
	14	Primary	Metastasis	2.17	0.0120
	15	Primary	Unsure	0.77	0.0113
	16	Primary	Unsure	1.27	0.0122
	17	Primary	Primary	1.04	0.0099
	18	Primary	Metastasis	1.26	0.0090
	19	Primary	Metastasis	0.03	0.0017
	20	Primary	Metastasis	2.50	0.0132
	21	Primary	Unsure	0.68	0.0004
	22	Primary	Unsure	2.96	0.0174
	23	Primary	Metastasis	2.31	0.0161
	24	Primary	Metastasis	1.22	0.0076

“Primary” represents that tumors were considered as primary tumors. “Metastasis” represents that tumors were considered as metastatic tumors. “Unsure” represents that no definite diagnosis could be made based on CT characteristics.