What is the consequence of a low signal-to-noise ratio in digital radiography?

A low signal-to-noise ratio in digital radiography indicates that the level of noise is relatively high compared to the useful signal from the radiographic image. This increased noise can obscure important details and degrade the overall quality of the image, making it appear grainy or speckled. As a result, diagnostic accuracy can be compromised, as essential features required for interpretation may become indistinguishable from the noise.

In practice, a lower signal-to-noise ratio makes it challenging for radiologists and practitioners to make accurate assessments of the image. Adequate detail is necessary for effective diagnosis, and when noise overshadows the signal, the resulting images may lack the clarity and detail needed to identify abnormalities or conditions accurately. Thus, the consequence is that images may appear grainy and less useful for diagnosis.