What should a technique chart contain for each AEC x-ray unit?

A technique chart for each Automatic Exposure Control (AEC) x-ray unit is essential for ensuring consistent and accurate imaging. It serves as a reference for radiologic technologists to select the appropriate settings prior to imaging.

Including photocell(s) used ensures that the technologist knows which detector or detectors will be activated for exposure. This is crucial because using the wrong photocell can lead to suboptimal image quality.

The optimum kilovoltage is another critical component, as it affects the penetration power of the x-ray beam and influences the contrast of the images produced. Proper kv settings help achieve the necessary image quality while minimizing patient exposure to radiation.

The backup time is equally important, as it prevents overexposure and ensures patient safety if the automatic system fails to terminate the exposure appropriately. Knowing the backup time allows technologists to ensure compliance with safety regulations and further reduces unnecessary radiation exposure.

Since each of these elements contributes vital information for effective operation and safety, the inclusion of all these components in a technique chart is essential for adequate AEC x-ray unit functionality.