When comparing digital radiography (DR) systems to computed radiography (CR) systems, what advantage does DR have in minimizing patient exposure?

Digital radiography (DR) systems significantly minimize patient exposure primarily due to their wider dynamic range. This feature allows DR systems to capture a broader spectrum of x-ray intensities, accommodating both underexposed and overexposed images more effectively than computed radiography (CR) systems. As a result, DR can produce diagnostic images at lower doses, as it requires less radiation to obtain a quality image.

The benefit of the wider dynamic range means that clinicians can achieve the necessary image quality with reduced exposure to radiation. In practice, this translates to a decreased risk of radiation-related effects for patients undergoing radiographic procedures. By optimizing the imaging process, DR systems ensure that the radiation dose is kept as low as reasonably achievable (ALARA), enhancing patient safety while still providing high-quality diagnostic images.