CAT scan will be performed in this way
You may be given a gown to wear during the procedure. Also Metal objects including jewelry, eyeglasses, should be removed before examination.
technologist will insert an intravenous (IV) line into a small vein in your arm or hand.
. An automatic injection machine connected to the IV will inject contrast material at a controlled rate both prior to and during scanning.
Also You may be asked to hold your breath during the scanning. Usually CT scanning only takes between 5 and 20 seconds to acquire the appropriate images.
CAT scan is painless, fast and easy.
Having diabetic, overweight ,has no relation with this test.
This test will, help in determining precise anatomical detail of blood vessels .
Please do not panic.
I wish for your good health.