Mobius AIRO Mobile CT System - Page 250

238 MI-42-0001 Rev. 19
CT USER INFORMATION: Dosage Factors and Image Quality
Geometric
Efficiency in Z
Direction
Dose Profile: Head
Phantom
Figure 165
Exposure length Integral
(central 33.9 mm)
123348.35 mrad-mm
Exposure length Integral
(central 31.8 mm)
115862.90 mrad-mm
CTDI (mrad) 4865.30
CTDI (mGy) 48.65
Z eff (Helical) 74.7%
Z eff (Axial) 70.2%
Variable Value
Exposure at 120 kV, 100 mA, 1.92 sec (192 mAs)
Helical Scans
Dose integral over 33.9 mm nominal beam width (mrad) 123348.35
Dose integral over 100 mm LLD length (mrad) 165031.03
Efficiency (Helical) 74.7%
Axial Scans
Dose integral over 31.8 mm nominal beam width (mrad) 115862.90
Dose integral over 100 mm LLD length (mrad) 165031.03
Efficiency (Axial) 70.2%