Table 1.

Performance of SCBCT and DCBCT in image uniformity using a uniformity module

	SCBCT (tube 1)	SCBCT (tube 2)	DCBCT
Center	−53.5 ± 6.3	−43.7 ± 6.0	−174.3 ± 5.0
Top	−61.2 ± 8.1	−59.6 ± 10.1	−143.2 ± 6.8
Left	−60.9 ± 7.4	−54.5 ± 8.2	−144.2 ± 6.5
Bottom	−60.9 ± 7.6	−60.0 ± 8.8	−144.6 ± 6.8
Right	−60.2 ± 9.6	−62.3 ± 9.6	−153.3 ± 5.7
Image uniformity	7.4	15.4	28.0

All values are average values ± standard deviation (SD) and are expressed in HU.