GE Revolution CT - Dose Modulation and Reduction Tools; Multi-Slice Detector Geometry

Generic description GE names
Effective tube current-time product: In helical scan mode, this is the
product of tube current and rotation time (expressed in units of mil‐
liampere • seconds (mAs) ÷ pitch)
Not used on this system
Tube potential: The electric potential applied across an X-ray tube
to accelerate electrons towards a target material, expressed in
units of kilovolts (kV)
kV
Pitch: Unitless parameter used to describe the table travel during
helical CT; equal to table travel (mm) per gantry rotation ÷ total
nominal beam width (mm)
Pitch
Automated patient instructions AutoVoice
1.2 Dose modulation and reduction tools
Table 2: Dose modulation and reduction tool terms
Generic description GE name
Automatic exposure control (AEC): A scanner feature that automat‐
ically adapts the X-ray tube current to the overall patient size to
achieve a specified level of image quality
Available in SmartmA
Angular tube current modulation Organ Dose Modulation
Longitudinal tube current modulation Not used on this system
Angular and longitudinal tube current modulation SmartmA (x, y, z)
ECG-based tube current modulation Cardiac Modulated
Image quality reference parameter for AEC Noise Index
1.3 Multi-slice detector geometry
Table 3: Multi-slice detector geometry terms
Generic description GE name
Multi-slice detector array design Fixed
Detector configuration Detector Configuration
Revolution CT User Manual
Direction 5480385-1EN, Revision 1
Appendix D Lexicon 683