Dexels are described as being part of which structure inside the imaging receptor?

• A. They are part of DELs inside the IR
• B. They are a type of phosphor
• C. They are a pixel
• D. They are a readout algorithm

Answer: (A)

Dexels are the tiny sensing subelements that make up each detector element (DEL) inside the imaging receptor. The receptor is arranged as an array of DELs, and within each DEL the dexels define the actual sensing area, subdividing the DEL to establish the sampling granularity and spatial resolution. This is why dexels are described as part of DELs inside the imaging receptor. They are not a phosphor material, not a separate pixel, and not a readout algorithm.