Which three of the following are functions of Automatic Brightness Control (ABC) in fluoroscopy?

Automatic Brightness Control (ABC) serves several important functions in fluoroscopy that contribute to optimal image quality and patient safety. Adjusting exposure factors is a primary function of ABC; it automatically modifies the x-ray tube current and/or exposure time to maintain consistent image brightness despite variations in patient thickness or density. This adjustment is crucial because it helps to ensure adequate imaging quality while minimizing unnecessary radiation exposure to the patient.

In addition to adjusting exposure factors, ABC also plays a role in controlling x-ray beam quantity. By adapting to the specific needs of the examination based on the anatomy being viewed and maintaining consistent brightness, ABC helps to produce clear images without requiring manual adjustments.

Compensating for variations in patient anatomy and density is yet another function of ABC. The system can respond to different patient sizes and structures, allowing for an even distribution of brightness across various body types. Without this capability, images might become too dark or too bright, which could obscure important anatomical details.

Enhancing image resolution, while a critical aspect of clinical imaging, is not a direct function of Automatic Brightness Control. The resolution of the images primarily depends on the imaging system's technological specifications and the quality of the equipment rather than the adjustments made by ABC.

In summary, each function