Dose Modulation And Reduction Tools; Multi-Slice Detector Geometry - GE Revolution CT User Manual

Generic description
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)
Tube potential: The electric potential applied across an X-ray tube
to accelerate electrons towards a target material, expressed in
units of kilovolts (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)
Automated patient instructions

1.2 Dose modulation and reduction tools

Table 2: Dose modulation and reduction tool terms
Generic description
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
Angular tube current modulation
Longitudinal tube current modulation
Angular and longitudinal tube current modulation
ECG-based tube current modulation
Image quality reference parameter for AEC

1.3 Multi-slice detector geometry

Table 3: Multi-slice detector geometry terms
Generic description
Multi-slice detector array design
Detector configuration
Appendix D Lexicon
Revolution CT User Manual
Direction 5480385-1EN, Revision 1
GE names
Not used on this system
kV
Pitch
AutoVoice
GE name
Available in SmartmA
Organ Dose Modulation
Not used on this system
SmartmA (x, y, z)
Cardiac Modulated
Noise Index
GE name
Fixed
Detector Configuration
683