Pelvic target volume inter-fractional motion during radiotherapy for cervical cancer with daily iterative cone beam computed tomography

Table 3 The motions of CTV-U and CTV-C with different tumor stages

	T stage	Left	Right	Anterior	Posterior	Superior	Inferior
CTV-U	T1	12.8 ± 3.8	12.7 ± 0.9	15.6 ± 4.1	16.7 ± 1.2	5.0 ± 4.1	3.3 ± 2.4
	T2	8.2 ± 3.7	8.3 ± 3.3	13.7 ± 2.8	7.2 ± 3.6	6.4 ± 6.4	3.6 ± 3.5
	T3	6.2 ± 0.3	8.9 ± 3.8	8.1 ± 1.8	6.6 ± 2.4	3.3 ± 2.4	1.7 ± 2.4
	T4	5.5 ± 0.7	12.3 ± 5.6	11.1 ± 5.5	6.3 ± 0.9	7.5 ± 2.5	2.5 ± 2.5
CTV-C	T1	12.6 ± 0.7	12.2 ± 2.4	10.0 ± 1.8	12.8 ± 0.9	3.3 ± 2.4	1.7 ± 2.4
	T2	6.7 ± 3.6	7.4 ± 2.7	9.7 ± 7.7	7.8 ± 3.2	5.7 ± 5.6	4.3 ± 1.7
	T3	4.9 ± 0.2	8.9 ± 5.3	6.8 ± 1.4	5.8 ± 1.2	3.3 ± 2.4	1.7 ± 2.4
	T4	5.5 ± 0.8	7.3 ± 0.2	7.9 ± 2.0	8.0 ± 2.7	7.5 ± 2.5	2.5 ± 2.5

Abbreviations: CTV-U, clinical target volumes of the uterus; CTV-C, clinical target volumes of the cervix, T, tumor

ISSN: 1748-717X