Table 3.

Limits of agreement between the AlignRT deltas and the shifts indicated by MV films (preshifts) and limits of agreement between AlignRT deltas of the surface treatment position and the actual treatment position (postshifts)

	Preshifts (mm)			Postshifts (mm)
	AP	CC	LR	AP	CC	LR
${\text{DICOM}}_{\text{ref}}$
Entire Surface	12.8	21.1	15.5	9.8	13.6	14.8
Breast Surface	12.6	21.9	15.1	13.0	18.4	15.9
${\text{AlignRT}}_{\text{ref}}$
Entire Surface	12.6	25.2	16.3	8.5	14.9	11.7
Breast Surface	12.4	20.6	19.1	12.0	15.8	14.9