1. CR
1.1. PSP (Photostiulable Phospor)
1.1.1. X-ray exposure absorbed by phosphor atoms
1.1.1.1. Solid-state laser scans entire IP
1.1.1.1.1. Light directs to photodetector
2. DR
2.1. FPD (Flat Panel Detector)
2.1.1. X-ray exposure captured by DEL (fill factor) (80%
2.1.1.1. Only exposed area of detector is "read"
2.1.1.1.1. Exit energy (image forming signal) captured for conversion to e- signal
2.1.2. Indirect
2.1.2.1. Exit beam absorbed by scintillator
2.1.2.1.1. Light picked up by photodetector which generates equal electric charge
2.1.2.2. Charge-Coupled Device (CCD)
2.1.2.2.1. Light converted to electric charge by capacitors---> released to ADC
2.1.2.3. Complementary Metal-Oxide Semiconductor (CMOS0
2.1.2.3.1. Not as sensitive to light as CCD
2.1.3. Direct
2.1.3.1. TFT holds electrical charge, then quickly releases to ADC
2.1.3.1.1. No light involved= improved spatial resolution