What do you know about the advantages of amorphous silicon flat panel detectors? Today, the editor will explain
The difference between amorphous selenium and amorphous silicon flat panel detector is
1. The structure is different. The structure of the amorphous silicon flat panel detector is mainly composed of a scintillator and a photoreceptor (amorphous silicon layer with photodiode function) integrated together and a TFT array; the structure of the amorphous selenium flat panel detector is mainly composed of amorphous selenium Layer plus TFT array structure.
2. The A/D conversion principle is different. The principle of amorphous silicon is that after the scintillator is exposed to X-rays, the X-ray photons are converted into visible light, and then the amorphous silicon layer with photodiode function is converted into image electrical signals, which are detected by the TFT array, and finally through A/D conversion. Obtain digital images; the principle of amorphous selenium is that the amorphous selenium layer directly generates electrical signals after X-ray exposure, passes through the TFT detection array, and then undergoes A/D conversion to finally obtain a digital image.
3. The difference between the fluorescent material layer and the detector element array layer. Amorphous selenium flat panel detectors have clearer image quality and better sharpness than amorphous silicon flat panel detectors.
4. Amorphous selenium flat panel detectors have very high requirements for the working environment during use, with short life span, high failure rate, and maintenance costs are much greater than amorphous silicon flat panel detectors. Therefore, the flat panel detectors on the market are based on amorphous silicon flat panels. Dominate the position.
The flat panel is mainly amorphous silicon flat panel detector and amorphous selenium flat panel detector. Amorphous silicon is used for indirect imaging. The technology is mature, and GPS is all in use. Amorphous selenium is direct imaging in the true sense, so there is a difference between the two.
The DR composed of flat-panel detectors is mainly divided into two types: one is an amorphous silicon flat-panel detector, which belongs to indirect energy conversion; the other is an amorphous selenium flat-panel detector, which belongs to a direct energy conversion method.
Seeing here, everyone knows the advantages of amorphous silicon flat panel detectors. If you have any needs, please call us.