Table 2:

Automated tube current modulation: manufacturer and principle

ManufacturerTrade NameImage Quality ReferencePrinciple
GE HealthcareAutomA, SmartmANoise indexMaintain a constant noise level (defined as noise index), using tube current within prescribed minimum and maximum values
ToshibaSure ExposureSDMaintain a constant noise level (defined in standard deviation), using tube currents and preset minimum and maximum values
SiemensCARE Dose4DQuality reference milliampere-secondMaintain the same image quality with reference to target effective milliampere-second levels for standard-size patients
PhilipsDoseRightReference imageKeep the same image quality as in the reference image