Question

A delay of about _____ seconds after the start of the IV contrast injection should be used for a helical scan of the neck?

1) 20
2) 35
3) 50
4) 75

Answer 1

The appropriate delay time after IV contrast injection for a helical scan of the neck is 20 seconds.

Step-by-step explanation:

The appropriate delay time after the start of the IV contrast injection for a helical scan of the neck is 20 seconds. This delay allows the contrast to circulate within the blood vessels and reach the target area. Waiting too long may result in the contrast material not being fully distributed, while waiting too little may not provide sufficient time for the contrast to enhance the desired structures.