What is a method to improve image quality using Automatic Exposure Control (AEC) during fluoroscopy?

Centering the anatomical part of interest is a method that directly contributes to improving image quality during fluoroscopy when using Automatic Exposure Control (AEC). AEC systems are designed to automatically adjust the exposure parameters—specifically the milliampere-seconds (mAs) and sometimes kilovolt peak (kVp)—based on the density of the anatomical area being imaged. By centering the anatomical part of interest, the AEC can more accurately assess the exposure needed, optimizing image quality while also minimizing patient dose. This precise centering allows the system to function more effectively, ensuring that the image is neither overexposed nor underexposed.

In contrast, increasing the kVp regardless of anatomy may lead to poor image quality because the energy of the x-rays may not be suitable for the specific tissues being imaged. It could enhance penetration but might compromise contrast. Using a higher mA without collimation could lead to unnecessary radiation exposure without improving the overall quality of the image, as both image contrast and dose management are important. Rotating the patient for better angles can sometimes help in improving visibility and reducing artifacts but does not directly enhance the function of AEC in determining optimal exposure settings for image quality. Thus, centering the anatomical area ensures