What to Eat Before a PET Scan
A PET scan is a type of imaging test that uses a radioactive tracer to create images of your organs and tissues. The tracer is injected into your body and then absorbed by your cells. When the tracer decays, it emits radiation that can be detected by a special camera. This information is then used to create images of your body.
What Can I Eat Before a PET Scan?
The type of food you can eat before a PET scan depends on the type of tracer being used. In general, you will be asked to fast for 6-8 hours before the scan. This means that you cannot eat or drink anything except water. However, there are some exceptions to this rule.
If you are having a PET scan with a FDG tracer, you will be asked to eat a high-carbohydrate diet for 24-48 hours before the scan. This will help to ensure that the tracer is taken up by your cells properly.
If you are having a PET scan with a different type of tracer, you may be given specific instructions about what to eat or drink before the scan.
Why Do I Need to Fast Before a PET Scan?
Fasting before a PET scan helps to ensure that the tracer is taken up by your cells properly. If you eat or drink anything before the scan, it can interfere with the tracer's ability to bind to your cells. This can result in inaccurate images.
What Can I Drink Before a PET Scan?
You can drink water before a PET scan. However, you should avoid drinking sugary drinks, such as soda or juice. These drinks can interfere with the tracer's ability to bind to your cells.
What Should I Wear to a PET Scan?
You should wear loose, comfortable clothing to a PET scan. You will be asked to remove all metal objects from your body, such as jewelry, belts, and hairpins. This is because metal can interfere with the PET scanner.
What Happens During a PET Scan?
During a PET scan, you will lie on a table that slides into a large, donut-shaped machine. The tracer will be injected into your body through an IV line in your arm. The scan will then take 30-60 minutes to complete.
Are There Any Side Effects from a PET Scan?
Most people do not experience any side effects from a PET scan. However, some people may experience mild nausea, vomiting, or dizziness. These side effects usually go away within a few hours.
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