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Table 3 Factors affecting radiation dose in CT [34]

From: A review on chest CT scanning parameters implemented in COVID-19 patients: bringing low-dose CT protocols into play

Equipment-related factors Application-related factors
Beam filtration
Beam shaper
Beam collimation
Detector array
Data acquisition system
Spiral interpolation
Adaptive filtration
Overranging
Automatic exposure control (AEC) system
Reconstruction method
Scan parameters
• Tube current-time (mAs)
• Tube potential (kVp)
• Slice collimation and slice thickness
• Pitch
• Object diameter of patient weight
Examination parameters
• Scan length
• Number of scan series
• Number of rotations in dynamic CT studies