Do Pet Scanners Emit Ionizing Radiation?
Pet scanners, also known as positron emission tomography (PET) scanners, are medical imaging devices that produce three-dimensional images of the body's metabolic activity. They are used to diagnose a variety of conditions, including cancer, heart disease, and Alzheimer's disease.
Do Pet Scanners Emit Ionizing Radiation?
Yes, pet scanners emit ionizing radiation.
The amount of radiation emitted by a pet scanner is small, but it is still enough to increase the risk of cancer. The risk of cancer from a pet scan is very low, but it is still important to be aware of the risks before undergoing the procedure.
How Does a Pet Scanner Work?
A pet scanner works by injecting a small amount of a radioactive tracer into the body. The tracer is absorbed by the cells in the body and emits positrons, which are positively charged particles. The positrons then interact with electrons in the body, producing gamma rays. The gamma rays are detected by the pet scanner and used to create images of the body's metabolic activity.
What Are the Risks of Pet Scans?
The main risk of pet scans is the exposure to ionizing radiation. Ionizing radiation can damage DNA and increase the risk of cancer. The risk of cancer from a pet scan is very low, but it is still important to be aware of the risks before undergoing the procedure.
Other risks of pet scans include:
- Allergic reaction to the radioactive tracer
- Nausea and vomiting
- Headache
- Diarrhea
Who Should Not Get a Pet Scan?
Pet scans are not recommended for pregnant women or children under the age of 18. The radiation exposure from a pet scan can be harmful to a developing fetus or child.
People with certain medical conditions, such as kidney disease or thyroid disease, may also be at increased risk of side effects from a pet scan.
How Can I Reduce the Risk of Cancer from a Pet Scan?
There are a few things you can do to reduce the risk of cancer from a pet scan:
- Talk to your doctor about the risks and benefits of a pet scan before undergoing the procedure.
- Make sure that the pet scanner is properly calibrated and that the staff is properly trained.
- Limit the number of pet scans you have.
- Avoid having pet scans during pregnancy or if you are breastfeeding.
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