CR and DR working process
The CR system mainly uses an IP detector, commonly known as an IP board, which is a carrier for collecting and recording image information. The imaging principle of CR is that the IP board has a light-exciting phosphor that absorbs and stores the x-ray energy when the x-ray is illuminated. The trapped energy can then be released by excitation with laser energy of the appropriate wavelength. The release process requires a dedicated CR reader. The energy released is converted into a voltage by a photomultiplier tube. The voltage is amplified, the input analog-to-digital converter is converted into a digital image, and is sampled and quantized and stored in a computer.
DR generally refers to digital photography based on charge coupled device (CCD) technology, which is commonly used as the most detector material for cesium iodide crystal. After the x-ray irradiation of the yttrium iodide crystal, the x-ray photon can be directly converted into visible light, and the visible light excites the photodiode under the yttrium iodide layer to generate a current, which is then stored on the diode’s own capacitance. The electrical signal is then read by the read circuit and quantized into a digital signal. Finally, it is transmitted to the image processor through the communication interface and stored in the computer.
However, CR has been replaced by DR. If you need to purchase DR, please contact our customer service.