Comparison of primary target volumes delineated on four-dimensional CT and 18 F-FDG PET/CT of non-small-cell lung cancer

Table 3 The volumes of primary tumors measured by PET/CT and 4DCT (cm ³ )

Lesion	GTV_PET15%	GTV_PET20%	GTV_PET25%	GTV_PET30%	GTV_PET35%	GTV_PET40%	GTV_PET2.0	GTV_PET2.5	IGTV₁₀
1	24.98	20.59	17	15.31	13.83	11.94	32.75	30.37	24.5
2	159.69	122.17	95.89	72.35	54.9	40.9	135.47	107.23	173.72
3	16.34	10.47	7.82	6.13	4.15	3.59	7.67	5.04	5.9
4	39.49	34.32	29.54	26.89	23.72	21.54	31.11	28	37.66
5	70.9	53.99	46.02	41.27	36.48	32.39	49.45	42.45	44.01
6	19.41	14.44	11.4	9.04	8.07	7.28	20.46	16.81	22.31
7	19.68	13	8.5	5.93	4.27	3.52	18.07	12.76	19.99
8	13.03	10.16	7.9	6.49	5.53	4.68	13.03	10.70	9.8
9	183.15	140.37	115.35	98.64	86.46	76.09	201.56	166.58	152.8
10	24.24	19.76	16.35	13.81	11.99	10.33	39.27	33.15	33.16
11	72.69	56.06	46.42	39.95	34.47	29.97	54.44	45.79	56.93
12	45.43	35.7	28.19	23.45	18.3	15.83	48.46	40.40	57.53
13	26.49	19.64	14.06	9.92	7.48	5.7	10.84	7.15	11.7
14	141.98	112.7	89.36	69.05	51.05	35.97	152.57	128.12	164.1
15	-	8.59	5.76	3.94	3.12	2.05	5.91	3.67	7
16	-	7.64	5.68	4.2	3.55	2.84	3.78	2.66	11.82
17	42.34	31.21	27.05	23.24	19.18	16.89	33.02	28.60	26.15
Median	39.49	20.59	17	15.31	13.83	11.94	32.75	28.60	26.15
P value	0.281	0.102	0.004	0.000	0.000	0.000	0.687	0.031	-

ISSN: 1748-717X