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Table 1: Scan details
Canon Aquilion ONE Philips IQon Prototype DL-CBCT
Tube (kV) 100 120 120
Tube current (mAs/mA) (average) 196 (Auto-modulation) 114 (Auto-modulation) 310
Scan time/rotation time (sec) 3.3/0.5 (Full rotation) 2.5/0.3 (Full rotation) 20.0/20.0 (200° rotation)
Nominal beam width (mm) 80 × 0.500 64 × 0.625 194.700
Pitch factor 0.813 0.671 NA
Display FOV coronal × sagittal × axial (mm³) 210.9 × 210.9 × 160.0 210.0 × 210.0 × 160.0 251.8 × 251.8 × 194.7
Section thickness (mm) 0.50 0.67 0.66
Matrix size 512 × 512 512 × 512 384 × 384
Reconstruction kernel FC43 Filter UA Ståhl et al^{15^a}
Reconstruction algorithm AIDR 3D eStandard iDose⁴ level 4 Ståhl et al^{15^a}
Avg CTDIvol (16-cm phantom) 20.0 mGy 21.3 mGy NA
Air kerma (in an 18-cm water phantom)^{^b} NA NA 57.6 mGy
MTF^{^c} 50%: 3.78 50%: 3.46 50%: 3.57
10%: 6.57 10%: 6.65 10%: 6.04
Note:—CTDIvol indicates volume CT dose index; MTF, modulation transfer function; NA, not applicable.
↵a Details of the prototype algorithm are described in Ståhl et al.¹⁵
↵b Air kerma in an 18-cm diameter plastic water phantom at the center of the scan length, measured in accordance with American Association of Physicists in Medicine Task Group Report 111.²⁶
↵c Generated from consecutive scans of the upper bead of a Catphan CTP528 module (The Phantom Laboratory).