CAMRT Radiography Practice Exam

What is the impact on image quality when increasing the system speed in radiography?

1. Increase in image quality

2. No change in image quality

3. Decrease in image quality

4. Quality fluctuates

The correct answer is: Decrease in image quality

Increasing the system speed in radiography generally leads to a decrease in image quality. This is primarily because higher system speeds typically utilize larger crystals, higher sensitivity materials, or faster image receptors that are designed to produce images with less exposure time. While this can be beneficial in reducing patient dose and improving workflow efficiency, it often results in a decrease in image resolution and overall detail. As the system speed increases, the trade-off often includes reduced sharpness and a greater likelihood of noise in the image. This can obscure fine anatomical details that are critical for accurate diagnosis. Thus, while faster systems are advantageous in particular contexts, they come with a compromise in image quality, which is why the correct assessment is that increasing the speed negatively impacts the quality of radiographic images.