Question

when performing a follow - up abdomen image on a patient who recently had a small bowel study, it may be best to
deactivate the aec and set the technique manually.
dramatically increase the backup mas.
increase the minimum response time.
increase to 120 kvp.

Explanation:

In a follow - up abdomen image after a small bowel study, contrast medium may still be present in the bowel. AEC (Automatic Exposure Control) can be affected by the contrast medium, leading to incorrect exposure. Manual technique setting bypasses this issue. Increasing backup mAs, minimum response time, or kVp are not the best solutions to deal with the presence of contrast medium.

Answer:

deactivate the AEC and set the technique manually.