CAMRT Radiography Practice Exam

What does the Air Gap technique achieve in radiographic imaging?

1. Increases patient throughput

2. Reduces scatter and improves image contrast

3. Maximizes radiation dose

4. Enhances color in images

The correct answer is: Reduces scatter and improves image contrast

The Air Gap technique is employed in radiographic imaging primarily to reduce scatter radiation, which in turn enhances the contrast of the resulting images. This technique involves increasing the distance between the patient's body and the radiographic film or digital receptor. By creating this air gap, a portion of the scattered radiation, which typically degrades image quality, is less likely to reach the film or receptor. As a result, there is a reduction in scatter fog, leading to an increase in image contrast and overall clarity. This method is particularly useful in certain types of imaging, such as when capturing images of the chest or abdomen. The improvement in contrast allows for better visualization of the anatomical structures, making it easier for radiologists and physicians to identify potential issues. The other options might not accurately describe the purpose or effects of the Air Gap technique. While it does not directly increase patient throughput or enhance color in images, it is also designed to minimize radiation dose, rather than maximizing it. Therefore, the benefits of the Air Gap technique are specifically focused on improving image quality through scatter reduction, confirming that the correct answer relates to its primary function of enhancing image contrast.