Why digital DR flat panel detectors can accept low-dose exposure

The biggest difference between a digital DRX optical machine and the above-mentioned equipment is that it receives a digital flat-panel detector and converts X-rays into electrical signals for output.
Different models of x-ray machines have different exposure conditions. Taking a certain type of X-ray machine as an example, the standard setting of exposure conditions is divided into three modes: automatic mode, semi-automatic mode and manual mode. After installing and debugging the DRX optical machine, it will work in automatic mode by default. In the DRX machine, the flat panel detector plays a decisive role in the photosensitive effect. There are two main methods for direct conversion flat panel detectors and indirect conversion flat panel detectors. The performance and photosensitivity of the indirect conversion flat panel detector depends on the performance of the fluorescent substance cesium iodide crystal and the performance of the amorphous silicon detection element array. Due to the high X-ray sensitivity or response characteristics of the direct conversion flat panel detector, the exposure required to obtain the same photosensitive effect is small. The relationship between the performance of the direct conversion flat panel detector and the photosensitivity effect depends on: the performance of amorphous selenium, the performance of the detection element array unit, the performance of the high-speed signal processing unit and the relationship between the two.
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Author：肖恩