What is the difference between MRI and CT?
The three major differences between an MRI and CT are:
An MRI exam is at least 25 minutes, whereas a CT exam is under 5 minutes.
An MRI machine has a long cylindrical enclosed tube; a CT scanner is a large open “donut”. Claustrophobia is minimal with a CT scan.
An MRI machine uses a large magnet and radio waves to produce images; a CT scanner uses ionizing radiation.
