CAMRT Radiography Practice Exam

Which AEC chamber is typically preferred during standard radiographic procedures?

1. Center chamber

2. Only left chamber

3. Only right chamber

4. Two outside chambers

The correct answer is: Center chamber

The center chamber is typically preferred during standard radiographic procedures because it aligns with the central ray of the X-ray beam, which is the primary focus during most imaging. By utilizing the center chamber, radiographers can ensure that the area of interest is appropriately centered, resulting in consistent and accurate exposure. This positioning maximizes the effectiveness of the Automatic Exposure Control (AEC) system, allowing it to function optimally by accurately measuring the amount of radiation passing through the patient. Using the center chamber helps minimize variations in exposure that can occur when other chambers are selected, as peripheral chambers may not represent the central anatomy being imaged as effectively. Additionally, central positioning typically results in less scatter radiation affecting the AEC readings, leading to improved image quality. Thus, under standard conditions, selecting the center chamber aligns well with established radiography practices.