CAMRT Radiography Practice Exam

Which imaging process contributes to the improvement of image quality through reduced patient exposure?

1. Film-based radiography

2. Computed radiography

3. Digital radiography

4. All imaging processes

The correct answer is: Digital radiography

Digital radiography enhances image quality while also reducing patient exposure due to several key factors. Unlike film-based radiography, which relies on the physical film that requires a significant amount of exposure to produce a diagnostic image, digital radiography uses digital detectors that have a higher sensitivity to radiation. This means that it can produce high-quality images with lower doses of radiation. Additionally, digital radiography allows for image post-processing, improving contrast and brightness after the image has been captured. This capability means that the need for repeated exposure due to poor image quality is minimized, further reducing overall patient exposure. The real-time feedback provided by digital systems also enables immediate assessment of images, allowing for optimal techniques to be used on the first attempt, thus ensuring safety and efficacy. In contrast, while computed radiography also offers some benefits over traditional film-based radiography, its image quality and dose efficiency do not surpass those provided by fully digital systems. The other imaging processes mentioned do not combine these advantages to the same extent as digital radiography does, making it the clear choice for improving image quality while minimizing patient exposure.