Table 4.

Typical radiographic artifacts

Signal processing	· Ghosting or image lag-DR. · Presence of previous latent image due to incomplete erasure-CR. · Detector saturation thresholds - DR/CR.
Detection	· Damage of Imaging plate-CR. · Dust or dirt in reader-CR · Dead pixels/lines- DR/CR
Acquisition	· Radiation scattering through back of the detector -DR/CR. · Beam hardening- DR/CR. · Grid interference patterns-DR/CR. · Under/overexposure- DR/CR ·
Image Transmission	· Readout disruption-CR/DR. · Image stitching- CR/DR
Mains electricity	Mains power cables produce 50/60 Hz signal (radiation). This electromagnetic interference (EMI) can be absorbed by the measurement leads to form noise in the measurement. The 50/60 Hz signal has narrow frequency bands; usually outside the band of the desired signal, and can be normally removed using a band-pass filter.
Instrumentation	Thermal noise originates from the electronic circuit itself.
Experimental error	Generated by undesired /uncontrolled change in the setup of the experiment.

EMI, electro magnetic interference.