Table 8.

Comparison of image quality action thresholds for the Medium (M20) and Half‐Fan CBCT

	XVI (%)	OBI* (%)
High contrast spatial resolution(lp/mm)
f30	18	20
f40	9	22
f50	8	34
HU constancy
Lung(PMP)	4	8
Water(Poly)	4	12
Uniformity	6	17
Noise	8	16

*Data from Stanley et al.7