When a technologist angles the beam and collimates while using AEC, how should the technical parameters change?

When a technologist angles the beam and collimates while using AEC (Automatic Exposure Control), the technical parameters such as kilovoltage peak (kVp), milliamperage (mA), and source-to-image distance (SID) do not necessarily need to change. AEC is designed to adjust automatically to achieve the proper exposure based on the radiation detected, regardless of beam angling or collimation.

When the beam is angled, it alters the way x-rays interact with the anatomy, but the AEC system is capable of compensating for these variations to ensure that the image receives the appropriate exposure. Collimation restricts the field size, which can improve image quality by reducing scatter radiation; AEC accounts for this by automatically adjusting the exposure time to maintain consistent image density.

This understanding is key for technologists, as it allows for the effective use of AEC while still ensuring quality imaging through proper beam management. Hence, no change in kilovoltage peak, milliamperage, or source-to-image distance is required when utilizing AEC in conjunction with beam angling and collimation.