Metabolic activity, as defined by the uptake of 18F-fluorodeoxyglucose (FDG) on positron emission tomography (PET), takes advantage of the physiologic preferential use of anaerobic glycolysis over oxidative phosphorylation used by malignant cells for their energetic needs. www.ncbi.nlm.nih.gov › articles › PMC4740191 Plainly put, this article will explain better, cancergrace.org/post/faq-primer-pet-scans Is that helpful?
The following quote is the conclusion of an article about scans and radiation. Us the link below to read the particulars about different scans including PET. "Because radiation exposure from all sources can add up over a lifetime, and radiation can, indeed, increase cancer risk, imaging tests that use radiation should only be done for a good reason. In many cases, other imaging tests such as ultrasound or MRI may be used. But if there’s a reason to believe that an x-ray, CT scan, or nuclear medicine scan (such as a PET scan) is the best way to look for cancer or other diseases, the person will most likely be helped more than the small dose of radiation can hurt." www.cancer.org/cancer/diagnosis-staging/tests/imaging-tests/understanding-radiation-risk-from-imaging-tests.html
Hey Ashley, Typically, MRIs are used to look at the brain. CTs are also sometimes used. PETs look for especially very active cells which the brain and cancer are both very active.
![PET Imaging: Introduction (Part 1) [L33]](http://i.ytimg.com/vi/tkTxNEFyO7Y/mqdefault.jpg)
What does physiologic and metabolic activity in petscan mean
Metabolic activity, as defined by the uptake of 18F-fluorodeoxyglucose (FDG) on positron emission tomography (PET), takes advantage of the physiologic preferential use of anaerobic glycolysis over oxidative phosphorylation used by malignant cells for their energetic needs.
www.ncbi.nlm.nih.gov › articles › PMC4740191
Plainly put, this article will explain better, cancergrace.org/post/faq-primer-pet-scans
Is that helpful?
Does PET SCAN HAS A lot of radiation?
The following quote is the conclusion of an article about scans and radiation. Us the link below to read the particulars about different scans including PET. "Because radiation exposure from all sources can add up over a lifetime, and radiation can, indeed, increase cancer risk, imaging tests that use radiation should only be done for a good reason. In many cases, other imaging tests such as ultrasound or MRI may be used. But if there’s a reason to believe that an x-ray, CT scan, or nuclear medicine scan (such as a PET scan) is the best way to look for cancer or other diseases, the person will most likely be helped more than the small dose of radiation can hurt." www.cancer.org/cancer/diagnosis-staging/tests/imaging-tests/understanding-radiation-risk-from-imaging-tests.html
If pet scans don't work for the brain- what does?
Hey Ashley, Typically, MRIs are used to look at the brain. CTs are also sometimes used. PETs look for especially very active cells which the brain and cancer are both very active.