Except for intravenous injections, most procedure is painless. Reports of significant discomfort or side effects are rare.
You will feel a slight pin prick when the technologist inserts the needle into your vein for the intravenous line. You may feel a cold sensation moving up your arm during the radiotracer injection. Generally, there are no other side effects.
It is important to remain still during the exam. Having to remain still or in one position for long periods may cause discomfort.
If you have a fear of closed spaces, you may feel anxious during the exam.