There are several components which influence the image quality.
- X-Ray tube with energy and dose settings (kV and mA)
- Diaphragm to reduce scatter radiation by masking the object only
- Pre-Filter to avoid overexposure and filter low energy quants
- Contrast from the object
- Visibility of the Image Quality Indicator
- Position of the object in the beam (magnification) and - hopefully - no movements during exposure
- Pre-Filter in front of the detector
- Detector (DDA, Film, Image Intensifier [Radioscopy], or CR)
- Software for detector calibration
- Software for image enhancement
- Quality of display unit and Experience of the inspector viewing the monitor
- or quality of the software evaluating the image including a 3D CT imaging software
The variances in the mainly three component groups are
The system with the highest detail visibility for large parts is slow and expensive ...