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A 35-year-old member asked:

what can a pet scan reveal?

3 doctor answers9 doctors weighed in
Dr. Anthony Mosley
Neurology 24 years experience
Metabolism: Pet scans used radioactively labeled glucose (rarely dopamine, or other tracers) to see how these chemicals are being used in the brain (or sometimes heart or other organs). Abnormalities of either too high or too low of a rate of usage in some areas might suggest epilepsy, dementia, cancer, Parkinson's (if looking at dopamine), or other diseases.
Dr. Guido Davidzon
Nuclear Medicine 18 years experience
Several things: An f18-fdg pet scan will highlight cells in your body that are consuming glucose at a different rate (usually higher) than its surrounding tissues. A neoplasm with abnormal growth consumes more glucose and thus could be revealed with this test . It is a very sensitive but not very specific test. Several other things that are not neoplasms such as infections or inflammation would also be revealed.
Dr. Joseph Accurso
Radiology 29 years experience
Physiology of lesion: Pet scans most often use a radioactive form of glucose, the energy source for most of the cells in our bodies. The pet scanner can detect and measure how much of the radioactive glucose analog, f-18 fdg, is in a particular organ or region. The areas using more glucose are hyper metabolic and generally more concerning. A low dose ct is also done at the same time to correlate anatomy with pet.

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Can kids catch fleas from household pets?

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Yes: ...But they can certainly come visit for a bite or two.
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A 36-year-old member asked:

Is pet dander worse than smoking in the home?

2 doctor answers7 doctors weighed in
Dr. Sean McGhee
Allergy and Immunology 23 years experience
No: While it's hard to directly compare these two, and for someone with a cat allergy in particular cat allergen in the home will be miserable for them, smoking is much harder on your health overall and over time. If you can only choose one, stop smoking.
CA
A 38-year-old member asked:

How long does pet dander remain in the house?

2 doctor answers3 doctors weighed in
Dr. Sean McGhee
Allergy and Immunology 23 years experience
4 months: About four months for most cat allergen, and dog is probably similar, although there isn't much evidence about dog. Levels can persist much longer, especially if the levels are extremely high originally.

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Last updated Jul 2, 2019

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