A PET scan uses a particular camera and a computer to take pictures of the organs in your physique. Most PET scans also use a low radiation dose CT scan so the areas of the body are extra precisely recognized.
Differentiation between most cancers recurrence and put up therapy structural change Since PET imaging detects metabolic modifications quite than structural changes, it is extra specific than CT or MRI and is able to distinguish most cancers recurrence from put up remedy structural modifications. This allows medical doctors to resolve if further remedy is critical.
The affected person is requested to come back fasting for the take a look at and an intravenous canulla is positioned in one of many peripheral veins (on palms or arms often). The radioactive tracer is injected and the patient is asked to relaxation in an isolation area for a stipulated time (usually 60-120 minutes) and sip some oral distinction material. The most commonly used radioactive tracer (Fluorodeoxyglucose) is an inert substance and doesn’t trigger any interaction or unwanted side effects within the physique.
A expert technologist administers the check and gathers images in keeping with your doctor’s directions. The technologist will provide you with a small intravenous (IV) injection of a radioactive tracer” known as FDG (fluorodeoxyglucose). You will then relaxation for about an hour because the tracer circulates all through your body. When it’s time for the test, you will lie on a table that slides into a short, doughnut shaped scanning tube. During the scan, the tracer emits a sign, which might be detected by the PET digicam.
The type patients drink: We use this technique often. Most folks’s intestines are about 11 ft long, so we ask that sufferers drink a number of cups of distinction so fluid fills the intestines effectively and provides us the best picture. The drinks are made with either barium or iodine, and so they help us see the abdomen, colon, and intestines during a CT scan. Some people do not just like the taste of the distinction, however many locations now supply different flavors which might make it go down a bit easier. Though these drinks are fairly protected, it’s a good idea for patients to drink loads of water after the test to flush the agent out of their system.