Which artifact is known to be unique to digital radiography?

Pixel failure is known to be unique to digital radiography, as it refers to the malfunctioning of individual pixels in the digital imaging sensor, leading to image artifacts. In digital radiography, images are created using a matrix of pixels, and when a pixel fails, it may result in a permanent mark or area on the image where the data is missing or incorrect.

This phenomenon is particularly associated with digital systems because they rely heavily on pixel data for image quality, unlike traditional film radiography. In film-based systems, artifacts tend to originate from physical processes, such as damage or chemical exposure, rather than from the electronic components that define a digital system's image quality.

Understanding pixel failure is critical for technicians and radiologists, as it can affect the diagnostic value of radiographic images. Therefore, recognizing and addressing this issue is an important aspect of maintaining the integrity of digital imaging systems in medical practice.