Where are DELs located in digital detector technology?

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Multiple Choice

Where are DELs located in digital detector technology?

Detector elements are the pixel units inside the digital flat-panel detector, sitting in the active matrix formed by the thin-film transistor (TFT) array. Each detector element combines a photodiode with a TFT switch and a storage capacitor, making up the DEL. When x-rays are absorbed by the scintillator, light is produced and the photodiode in each element converts that light into electrical charge, which is held by the capacitor and then read out through the TFT as the image is scanned row by row. Since this pixel-level electronics lives inside the detector panel itself, the DELs are located within the TFT area. They are not in the PSP plate used for PSP/CR, nor in the monitor, nor in the patient.

Detector elements are the pixel units inside the digital flat-panel detector, sitting in the active matrix formed by the thin-film transistor (TFT) array. Each detector element combines a photodiode with a TFT switch and a storage capacitor, making up the DEL. When x-rays are absorbed by the scintillator, light is produced and the photodiode in each element converts that light into electrical charge, which is held by the capacitor and then read out through the TFT as the image is scanned row by row. Since this pixel-level electronics lives inside the detector panel itself, the DELs are located within the TFT area. They are not in the PSP plate used for PSP/CR, nor in the monitor, nor in the patient.

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