3D-conformal Accelerated Partial Breast Irradiation treatment planning: the value of surgical clips in the delineation of the lumpectomy cavity

Table 2 Discrepancies in lumpectomy cavity volumes between the 4 radiation oncologists (Juniors J1 and J2; Experts E1 and E2).

N = 40	Volume of lumpectomy cavity (cm³)		Volume of lumpectomy cavity (cm³) when the assessment was restricted to CT slices containing surgical clips		p
	Median	Min - max	Median	Min - max
J1	14	5 - 53	15	6 - 53	0.98
J2	16	5 - 61	16	5 - 60	0.39
E1	13	5 - 48	12	5 - 46	p < 0.0001
E2	11	5 - 96	11	4 - 50	p < 0.0001

ISSN: 1748-717X