Which components make up the capture area of a detector element (DEL)?

The capture area of a detector element (DEL) is fundamentally comprised of a top electrode, detection layer, and bottom electrode. These components work together to facilitate the conversion of x-ray photons into an electrical signal, which is crucial for digital radiography.

The top electrode is often a conductive layer that collects the charge generated by the detection layer when it absorbs x-rays. The detection layer, typically made of a material that converts x-rays into ionization or electron pairs, is central to the functioning of the DEL. It is in this layer where the primary interaction with x-rays occurs, producing the signal that will ultimately be processed to create an image. Finally, the bottom electrode serves as a return path for the collected charges, ensuring efficient signal processing.

Understanding the role of each of these components helps clarify how images are captured in digital radiography and emphasizes the importance of the DEL's structure in achieving high-quality images.