How should different flat panel detectors be compared?

How should different flat panel detectors be compared?
The flat panel detector is the most expensive component in the DR system, so we must be careful when purchasing, so how can different flat panel detectors be compared?
The two indicators of the imaging quality of a flat panel detector are generally the detection rate and the spatial resolution. The inspection of DQE and spatial resolution can simply evaluate the quality level of the flat panel detector.
Amorphous silicon flat panel detectors, the layers of scintillators and the transistors that convert optical signals are the main aspects that affect the DQE of amorphous silicon flat panel detectors.
Amorphous solar panel detector, the optical signal conversion mainly depends on the electron-hole pairs generated by the amorphous layer, so the ability of the amorphous layer to generate charges can determine its DQE.

Author：Newheek-Detector