PET-FDG
What is PET-FDG?
PET-FDG is an advanced medical imaging technique that uses a radiopharmaceutical called fluorodeoxyglucose (FDG) to evaluate metabolic activity in body tissues. FDG is a glucose-like molecule that accumulates in areas with high metabolic activity. This study allows for detecting functional abnormalities before they are visible on other imaging tests.
What is this test used for?
PET-FDG is primarily used in:
- Inflammation and infections: Detecting active inflammatory or infectious processes in the body.
- Oncology: Diagnosis, staging, and monitoring of various types of cancer, such as lymphomas, lung cancer, breast cancer, colon cancer, among others.
- Neurology: Evaluation of neurodegenerative diseases such as Alzheimer’s, Parkinson’s disease and other parkinsonisms, epilepsies, and brain disorders.
- Cardiology: Identifying areas of ischemia or cardiac damage in patients with coronary artery disease.
Benefits of high technology in PET-FDG
PET-FDG uses a radiopharmaceutical (FDG) that is administered intravenously. FDG is distributed throughout the body and accumulates in areas with high metabolic activity. The PET scanner detects the radiation emitted by the FDG and generates three-dimensional images that show areas of higher metabolic uptake.
How is the procedure performed?
The PET-FDG procedure involves:
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Preparation:
Generally, you will need to fast for 4 to 6 hours before the exam, but consult your doctor to confirm. It is advisable to drink water before the study. Be sure to inform your doctor if you are taking any medication, if you are pregnant or breastfeeding. Additionally, wear comfortable clothing that does not contain metallic elements.
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During the test:
During the test, FDG will be administered intravenously. After the injection, you will need to rest for approximately 30 to 60 minutes to allow the radiopharmaceutical to distribute throughout the body. Once this time has passed, you will be asked to lie on the PET scanner table while images are taken. It is essential to remain still during the study to ensure image quality. The total duration of the procedure, including preparation and image acquisition, is approximately 2 hours.
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After the test:
After the procedure, you can resume your normal activities, unless your doctor tells you otherwise. It is advisable to drink plenty of water to help eliminate the radiopharmaceutical from your body. The PET-FDG results will be analyzed by a specialized radiologist and sent to your doctor, who will explain the findings and, if necessary, recommend appropriate treatment.
Recommendations for the test
If you have diabetes, it is important to inform your doctor so they can adjust specific recommendations related to glucose control before the exam. During the procedure, you should remain as still as possible to ensure accurate images. Additionally, follow all instructions given by your doctor before, during, and after the procedure.
Are there any risks?
PET-FDG is a safe procedure, but there are some minimal risks:
- Radiation exposure: FDG emits a small amount of radiation, but the dose is low and considered safe.
- Allergic reactions (rare): In exceptional cases, allergic reactions to the radiopharmaceutical may occur.
- Mild discomfort: You may experience discomfort at the injection site.
For your test to proceed smoothly, we ask that you arrive in advance of your scheduled time. This will allow us to complete the necessary administrative and clinical preparation.
Before the test, we will provide you with the Informed Consent form, a document with important information that you must read and sign.
If your appointment is for a Magnetic Resonance Imaging (MRI), it is crucial that you inform us about the presence of pacemakers, metallic objects, prostheses (including dental), tattoos, or medication infusion devices, such as insulin pumps.
These diagnostic tests are very safe, but as with any medical procedure, there is a minimal possibility of incidence.
