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

Table 4 Differernt margins required to encompass the clinical target volume of uterus and cevix

	Marigin	Mean % of patients missing(Left)	Mean % of patients missing(Right)	Mean % of patients missing(Anterior)	Mean % of patients missing (Posterior)	Mean % of patients missing (Superior)	Mean % of patients missing (Inferior)
CTV-U	3	100	100	100	87	67	53
	5	87	80	100	80	33	7
	7	53	67	87	60	33	7
	10	20	53	80	27	13	0
	15	13	7	27	13	0	0
	20	0	0	7	0	0	0
	25	0	0	0	0	0	0
	30	0	0	0	0	0	0
CTV-C	3	93	100	93	100	67	60
	5	60	80	80	87	27	0
	7	33	67	60	60	27	0
	10	33	27	33	33	7	0
	15	0	7	7	0	0	0
	20	0	0	7	0	0	0
	25	0	0	7	0	0	0
	30	0	0	0	0	0	0

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

ISSN: 1748-717X