What is the percentage of the detector element (DEL) devoted to the detection layer called?

The fill factor refers to the ratio of the area of the detector element (DEL) that is actively involved in detecting the incoming radiation to the total area of the DEL. It is an important measurement because it indicates how effectively the detector can capture the radiation and convert it into an electrical signal for image formation. A higher fill factor means that a greater portion of the detector is utilized for detection, resulting in improved imaging performance and sensitivity. This concept is essential in understanding the efficiency and quality of digital radiography systems. Other terms such as capture efficiency, dynamic range, and detective quantum efficiency all relate to various aspects of image quality and system performance, but they do not specifically describe the area ratio concerning the detection layer like the fill factor does.