CT scan duration varies depending on the type of scan and whether contrast is used:

Actual scanning time:

• Simple CT scans: 5-10 minutes

• CT scans with contrast: 15-30 minutes

• Complex studies (CT angiograms): 30-60 minutes

Total appointment time:

• Allow 30-60 minutes for your entire visit

• This includes preparation, the scan itself, and any brief observation period

What affects duration:

• Whether you need IV contrast (requires extra time for injection)

• If you need to drink oral contrast beforehand (may require 1-2 hours)

• How well you can lie still and follow breathing instructions

• Whether additional images are needed

The actual scan:

• You'll lie on a table that moves through the CT scanner

• The machine makes whirring sounds as it takes images

• You may be asked to hold your breath for short periods (10-20 seconds)

Planning tip: Even for quick scans, plan for at least an hour at the facility to account for check-in, preparation, and any unexpected delays.