Detector element (DEL) pitch refers to which physical dimension?

Detector element (DEL) pitch refers to which physical dimension?

• A. Circumference of the DEL
• B. Height of the DEL
• C. Distance from one DEL to another
• D. Width of the DEL

Answer: (C)

In a digital radiography detector, detector elements are laid out in a grid. DEL pitch is the distance from the center of one detector element to the center of the next one (center-to-center spacing). This distance effectively equals the width of an element plus any gap to the neighboring element. Pitch determines how densely the image is sampled: smaller pitch means more elements per area and higher potential spatial resolution, while larger pitch reduces sampling density and can limit sharpness. The other dimensions listed—circumference, height, or width alone—do not describe the spacing between adjacent elements; pitch specifically reflects how far apart the elements are from center to center.

In a digital radiography detector, detector elements are laid out in a grid. DEL pitch is the distance from the center of one detector element to the center of the next one (center-to-center spacing). This distance effectively equals the width of an element plus any gap to the neighboring element. Pitch determines how densely the image is sampled: smaller pitch means more elements per area and higher potential spatial resolution, while larger pitch reduces sampling density and can limit sharpness. The other dimensions listed—circumference, height, or width alone—do not describe the spacing between adjacent elements; pitch specifically reflects how far apart the elements are from center to center.