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Monsey, New York
A 68-year-old male asked:

can a pet scan cause an increase in?

1 doctor answer1 doctor weighed in
Dr. Matt Wachsman
Internal Medicine 36 years experience
No: they are pretty benign. The radiation dose is small and it is promptly cleared.

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CA
A 38-year-old member asked:

What does "hypermetabolic" mean on the report of a pet scan?

3 doctor answers9 doctors weighed in
Dr. Maureen Nash
Geriatric Psychiatry 24 years experience
Over-active: A pet scan measures the metabolism of glucose. Areas that are overactive are called hypermetabolic.
CA
A 34-year-old member asked:

What is a pet scan used for?

4 doctor answers13 doctors weighed in
Dr. Maureen Nash
Geriatric Psychiatry 24 years experience
Cancer usually: The most common illnesses studied are various types of cancer. Frontal temporal lobe dementia can be differentiated from alzheimers disease from lewy body dementia also.
A 41-year-old member asked:

What isotope is used in the injection for a pet scan?

2 doctor answers5 doctors weighed in
Dr. Mark Milunski
Cardiology 37 years experience
PET scan: It depends on the question being asked. Cardiac pet scans use several different types of isotopes including rubidium-82, n-13 ammonia, and fluorine-18 deoxyglucose. These can be used to measure myocardial metabolism (fluorine-18 deoxyglucose) or coronary blood flow (rubidium-82, n-13 ammonia).
A 53-year-old member asked:

How does metal affect the results of a pet scan?

3 doctor answers5 doctors weighed in
Dr. Andrew Turrisi
Radiation Oncology 47 years experience
Metals and Imaging: Pet scans rely on radioactive sugar honing to areas consuming lots of energy, like cancer (sarcoid too), metals from prior surgery usually doesn't interfere. Mri is a different story . Metal fragments, bullets, implanted devices can move or heat in magnetic fields. Modern medical implants (hips, knees, plates) commonly are compatible. They interefere with ct's and plane films: obstruct view.
CA
A 24-year-old member asked:

How is a pet scan conducted?

3 doctor answers7 doctors weighed in
Dr. Julian Bragg
Neurology 17 years experience
Track a tracer: Pet scans make use of tracers, radioactive compounds that bind to specific compounds of interest. The tracer is injected and, after a few minutes, the pet scanner looks to see where the radioactivity has ended up, and is thereby able to see how much of the compound of interest is present, and where it is located.

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Last updated Oct 20, 2015

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