Why is it important that pet scans are highly penetrating

(PET) scan is an imaging test that allows your doctor to check for diseases in your body. ... The tracer will collect in areas of higher chemical activity, which is helpful because certain tissues of the body, and certain diseases, have a higher level of chemical activity.

So then a doctor or whoever is testing you can know that there may be a disease in your body.

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i would have a lunch. it's one big package of food, making it one food. : p