The day before your PET scan, you will be asked to stick to a lighter diet that does not contain carbohydrates and sugar. This is because PET scans evaluate blood sugar optimization in the body. If you consume a heavy diet prior to your test, it can show ineffective results during your PET scan.
You should ideally avoid the following food products or groups:
- Pasta or pizzas
- Processed bread
- Caffeinated beverages
- Dairy products
Remember to keep your meals light and without fried foods. This will ensure that your test result is optimal and not misleading.
You will be asked to change into a gown and take off any metallic jewelry. Please keep in mind to do so. If you have any metal implants such as a DBS wire in the brain, ask your doctor about its effect on the scan.
PET scan may be unsafe for fetus, hence if you’re pregnant, let your doctor know. If you’re in the breastfeeding phase, you may be required to pump milk 24 hours before the procedure. Also, you cannot breastfeed 24 hours after the scan either. So make arrangements accordingly.
Understanding the Results of your PET Scan
PET scan results usually arrive within 24 to 48 hours after the test is done. A radiologist will look at your results to interpret how your organs and tissues are performing. A PET scan has pictures with bright spots due to the radioactive tracers that were inserted into your body.
These spots display the chemical activity in your organs and tissues and hence will show the radiologist where the issue really lies.