What is the relationship between DEL size and spatial resolution?

The relationship between Detector Element (DEL) size and spatial resolution is fundamental in imaging technology. Smaller DEL sizes increase spatial resolution because they allow for a greater number of individual detection points over a given area. This increased density of DELs means that finer details in the image can be captured, leading to enhanced clarity and a sharper representation of the structures being imaged.

In imaging, spatial resolution refers to the ability to distinguish between two closely spaced objects. When DELs are smaller, they can better differentiate fine details, resulting in a higher level of detail in the image produced. Consequently, this is particularly crucial in fields like radiology, where identifying small lesions or anatomical structures can significantly affect diagnosis and treatment planning.

In contrast, larger DEL sizes can lead to a decrease in spatial resolution because they sample a larger area of the image at once. This can cause loss of detail and the ability to discern small structures, which is why imaging systems favor smaller DEL sizes when high spatial resolution is desired.