Table 1.

Individualised internal target volume (ITV) margins related to target (uterus and cervix) measured at time of treatment planning as the mean between the anterior and posterior ITV margin. Target motion measurements are shown in the last columns as the distances from the borders of the anterior part of the uterus and cervix to the corresponding borders in the fused pre-treatment imaging modalities. All measurements are visually assessed.

Patients	Mean of the anterior-posterior ITV margin (cm)		Distance between “full” bladder CT and MRI (cm)		Distance between “full” and “empty” bladder CTs (cm)
	Uterus	Cervix	Uterus	Cervix	Uterus	Cervix
1	0.9	1.2	0.4	0.0	0.0	0.0
2	1.9	1.6	0.2	0.0	2.3†	0.1
3	0.9	1.1	0.2	0.2	0.4	0.0
4*	1.2	1.2	2.0†	0.9	1.5	0.8
5	1.2	1.0	0.3	0.3	0.5	0.3
6	0.9	1.5	0.5	0.4	0.0	0.9
7	0.8	1.1	0.8	0.4	0.0	0.0
8	0.5	1.0	0.1	0.3	0.0	0.0
9*	0.8	1.4	0.3	0.4	0.0	0.0
10*	1.5	1.0	0.6	0.3	0.5	0.2
11	0.9	1.0	0.4	0.0	0.0	0.0
12	2.2	1.6	0.0	0.0	0.0	0.0
13*	1.3	1.1	0.2	0.3	0.8	0.4
14	1.0	1.0	0.0	0.6	0.6	0.3
15	0.9	1.2	0.0	0.2	N/A	N/A
16	1.3	1.0	0.3	0.3	2.5†	1.4
17	1.3	1.0	0.0	0.0	0.0	0.0
18*	2.0	2.1	0.7	0.3	2.9†	0.8
19	1.6	1.0	1.4	0.4	2.1†	0.9
20*	1.9	1.5	3.0†	0.6	2.2†	0.3
21*	1.1	1.4	0.5	0.0	0.0	0.0
22	1.6	1.7	2.3†	0.3	1.6†	1.0
23	1.3	1.2	0.3	0.3	0.0	0.0

Abbreviations: N/A = not available (empty bladder scan missing).

^*Re-planned patients (n = 7).

^†“Large target motion” defined as uterus and/or cervix distances >1.5 cm measured between the pre-treatment imaging modalities.