Table 2.

Individual and mean intra‐observer VR before, immediately after and 12 months following the EI for computed tomography and magnetic resonance imaging modalities

Parameter	Education	RO1	RO2	RO3	RO5	Mean VR
CT CTV	Before	1.44	1.43	1.99	1.32	1.55
	After	1.31	1.32	1.4	1.25	1.32
	12 months	1.26	1.31	1.66	1.25	1.37
MRI CTV	Before	1.19	1.18	1.46	1.46	1.32
	After	1.14	1.16	1.18	1.14	1.16
	12 months	1.16	1.12	1.26	1.18	1.18

VR, volume ratio; CT, computed tomography; CTV, clinical target volume; MRI, magnetic resonance imaging; EI, education intervention.