The storage capacitor of the detector element (DEL) stores which of the following?

The storage capacitor of the detector element (DEL) in digital radiography is designed to store a positive charge. When X-rays hit the detector, they interact with the materials in the DEL, leading to the generation of electron-hole pairs. The electrons are then collected by the storage capacitor, which accumulates these charges. The positive charge in this context is critical since it represents the amount of radiation exposure that has been absorbed by the DEL. This charge is subsequently processed to create the digital image.

Understanding the function of the storage capacitor is essential as it directly influences the detector's ability to capture and quantify the radiographic information. The stored charge is proportional to the intensity of the radiation exposure, making it an integral part of image formation in digital radiography systems.