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How does an X-ray flat panel detector work?

An X-ray flat panel detector (FPD) is a device used to convert X-ray photons into digital images. It consists of three main components: the detector array, scintillator material, and thin-film transistor (TFT) array.
X-ray detection: When X-ray photons pass through the patient’s body, they interact with the scintillator material in the detector. This interaction causes the scintillator to emit light photons.
Light conversion: The emitted light photons from the scintillator strike the surfaces of the detector array, which is made up of tiny individual detector elements called pixels. The purpose of the scintillator is to convert the X-ray photons into visible light that can be detected by these pixels.
Photodetection: Each pixel in the detector array contains a photodetector (usually made from amorphous silicon or amorphous selenium) that converts the incoming visible light into an electrical charge.
Charge measurement: The electrical charge accumulated by each pixel is then measured and converted into a digital signal by the TFT array. The TFT array acts as a switch, controlling the readout of each pixel and transferring the charge data to a computer for image processing.
Image reconstruction: The computer processes the digital data received from the flat panel detector to create a detailed X-ray image, which can be viewed and analyzed by medical professionals.
Overall, the X-ray flat panel detector offers several advantages over traditional X-ray film, including real-time image acquisition, higher sensitivity, wider dynamic range, and immediate availability of digital images for analysis and archiving. Whatsapp:+86 18953679166. Email:


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