CAMRT Radiography Practice Exam

What is the primary purpose of using AEC in radiographic imaging?

1. To provide consistent image quality

2. To automate patient positioning

3. To enhance post-processing capabilities

4. To increase radiation dose

The correct answer is: To provide consistent image quality

The primary purpose of using Automatic Exposure Control (AEC) in radiographic imaging is to provide consistent image quality. AEC systems are designed to automatically adjust the exposure time based on the radiation detection of the image receptor. By doing so, they help achieve optimal exposure levels regardless of variations in patient size or density, which ultimately results in high-quality images with appropriate contrast and detail. This consistent exposure helps mitigate issues related to underexposure or overexposure, ensuring that images are reliable for diagnosis. Moreover, it reduces the operator's workload, as the technologist does not have to manually set the exposure parameters for each individual examination. The other options, while related to aspects of radiographic practice, do not capture the core function of AEC. For example, AEC does not directly automate patient positioning, nor does it inherently enhance post-processing capabilities. Additionally, it aims to optimize rather than increase radiation dose, focusing instead on minimizing unnecessary exposure to maintain patient safety.