Table 1.

Positional repeatability based on five CT scans, with the SPS source at each chosen dwell position for the Venezia^TM lunar ovoids. 1300 mm represents the most distal treatment dwell position

		1300 mm (distal)	1290 mm	1280 mm
22 mm	Maximum 3D difference (mm)	0.3	0.2	0.2
	Average 3D difference (mm)	0.2	0.1	0.1
	Standard deviation (mm)	0.1	0.1	0.1
26 mm	Maximum 3D difference (mm)	0.5	0.2	0.2
	Average 3D difference (mm)	0.2	0.1	0.1
	Standard deviation (mm)	0.2	0.1	0.1
30 mm	Maximum 3D difference (mm)	0.6	0.3	0.3
	Average 3D difference (mm)	0.3	0.2	0.1
	Standard deviation (mm)	0.2	0.1	0.1