What is the function of a scintillator in digital radiography?

The function of a scintillator in digital radiography is to convert X-rays into visible light that can be captured by a digital detector. This process is crucial because digital detectors, such as charge-coupled devices (CCDs) or complementary metal-oxide-semiconductors (CMOS), are designed to capture and digitize visible light rather than X-ray photons directly.

When X-rays pass through the scintillator material, typically made from substances like cesium iodide or sodium iodide, they interact with the material and emit visible light photons. This light is then directed to the digital detection elements, which convert the light into electrical signals that can be processed to form an image.

This conversion is essential for effective imaging in digital radiography, as it enhances the image quality and allows for more efficient signal processing, which contributes to better diagnostic capabilities. Thus, the role of the scintillator is integral to the functionality of modern digital radiography systems.