The DQE of the X-ray flat-panel detector affects the contrast of the image, and the spatial resolution affects the image’s ability to distinguish details. The DR of different types of X-ray flat-panel detectors should be selected according to different inspection parts in the filming. For chest examinations, the focus is on observing and distinguishing the density of different tissues, so the density resolution requirements are relatively high. In this case, it is advisable to use the DR of the amorphous silicon X-ray flat-panel detector, so that the DQE is relatively high, and it is easy to obtain relatively high-level images, which is more helpful for diagnosis; for the inspection of limbs, joints and breasts, It is necessary to have higher visualization of details and high requirements for spatial resolution. Therefore, the DR of amorphous selenium X-ray flat-panel detectors should be used to obtain images with high spatial resolution. At present, most manufacturers’ digital mammography machines use amorphous selenium X-ray flat-panel detectors, precisely because mammography requires high spatial resolution, and only amorphous selenium X-ray flat-panel detectors can achieve the corresponding Claim.
Therefore, different types of X-ray flat-panel detectors cause differences in DQE and spatial resolution due to differences in materials, structures, and processes. DQE affects the ability to distinguish differences in tissue density; and spatial resolution affects the ability to distinguish fine structures. Currently, there is no X-ray flat panel detector with high DQE and spatial resolution, so a balance needs to be made between the two.
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