How Long Radioactive After Pet Scan?

Is it safe to be around someone after a PET scan?

During a positron emission tomography (PET) scan, your body’s tissue will be exposed to radiation. Close contact with pregnant women, babies or young children should be avoided for a few hours after having a PET scan. Read more about radiation exposure.

What are the side effects of having a PET scan?

If undergoing a combination PET-CT scan, the iodine-based contrast dye used for the CT component can cause side effects, including nausea, vomiting, headache, itching, flushing, and mild rash. In rare cases, a serious, all-body allergic reaction known as anaphylaxis may occur.

What should I avoid after a PET scan?

Do not drive for at least 4 hours after the scan. Please avoid eating foods high in carbohydrates. These foods include potatoes, pasta, rice, breads, pretzels, cookies, candy, soda pop and alcoholic beverages.

How does cancer show up on a PET scan?

PET Scans. PET scans, short for Positron Emission Tomography, can detect areas of cancer by obtaining images of the body’s cells as they work. First, you are injected with a substance made up of sugar and a small amount of radioactive material. PET scans are not used to screen women for breast cancer.

Can you drive yourself home after a PET scan?

Most people are able to drive themselves home after a PET scan. The only exception is if you took a Valium or Ativan in advance of the procedure. If so, you will need to be driven. You will not be radioactive to anyone who touches, kisses, or stands close to you.

Can a PET scan miss cancer?

PET scans must be interpreted carefully because noncancerous conditions can look like cancer, and some cancers do not appear on PET scans. Many types of solid tumors do appear on PET scans, including: Brain. Cervical.

How long does radioactive dye stay in your body?

The nuclear imaging agent is out of your system within 60 hours, but it is always decaying so it becomes minimal in a relatively short period of time.

What is a disadvantage of a PET scan?

Disadvantages of PET/CT Scans

Pregnant women should not undergo PET/CT scans because the radioactive tracers used may be dangerous to the baby. Before having a PET/CT scan, a diabetic patient’s blood sugar level will be evaluated, and a glucose serum blood test might be administered.

How long do PET scans take?

How long does a PET scan take? After the radiotracer is injected into a vein, it usually takes up to one hour to travel throughout the body and be absorbed into the organs or tissues that are being examined. The PET scan itself may take another 30 to 60 minutes. Heart and brain studies take less time for imaging.