Table 2.

Mean CTV variations from the planning CT over time for the entire cohort

	Weeks (deviations in mm)	1 (mm)	2 (mm)	3 (mm)	4 (mm)	5 (mm)	6 (mm)
GTV	Entire cohort	4.85 ± 2.03	6.61 ± 3.01	7.06 ± 3.23	7.92 ± 3.78	8.19 ± 4.18	8.98 ± 4.55
	With ART	5.98 ± 2.17	7.58 ± 2.82	9.04 ± 3.23	9.91 ± 3.04	10.31 ± 3.47	11.46 ± 4.54
	No ART	3.86 ± 1.28	5.65 ± 3.01	5.20 ± 1.88	6.06 ± 3.50	6.34 ± 3.92	6.81 ± 3.38
CTV	Entire cohort	4.90 ± 1.90	6.39 ± 2.82	6.87 ± 3.06	7.51 ± 3.48	7.79 ± 3.88	8.50 ± 4.18
	With ART	5.99 ± 1.97	7.22 ± 2.62	8.56 ± 3.27	9.32 ± 2.81	9.75 ± 3.37	10.71 ± 4.45
	No ART	3.94 ± 1.24	5.66 ± 2.87	5.28 ± 1.79	5.81 ± 3.24	6.08 ± 3.54	6.56 ± 2.84

GTV internal gross tumor volume, CTV clinical target volume, ART adaptive radiotherapy