What term is used for a grainy image in radiography?

The term for a grainy image in radiography is commonly referred to as mottle. This phenomenon occurs due to insufficient quantities of x-ray photons interacting with the imaging receptor, resulting in random variations in density across the image. Mottle manifests as a speckled appearance, which can obscure details and reduce the overall quality of the radiographic image.

Quantum noise, while related, specifically refers to the statistical fluctuation in the number of x-ray photons detected, impacting image clarity. Image distortion typically relates to inaccuracies in shape or size due to issues with the equipment or technique, not graininess. Granular distortion is not a standard term used in radiography. Understanding these distinctions is crucial for recognizing and addressing issues that can arise in image quality during radiographic procedures.