Meaning of Cylus: Cylus is a modern English respelling of the name Silas, which is a short form of the Greek name Silouanos, which is a variant of the Latin name Silvanus, which is derived from the Latin word silva, meaning wood, forest.
Overview. A positron emission tomography (PET) scan is a type of nuclear imaging test that shows the metabolic activities (energy usage) of your brain. While X-ray, CT, and MRI scans look at the anatomy of your brain, a PET scan can give your doctor information about how your brain is working.
FDG Metabolic Brain study. What: A PET brain scan is used to either diagnose, stage, restage, or monitor therapy response to primary brain cancers or metastatic brain tumors. FDG PET/CT brain studies can also differentiate different types of dementia. Images are acquired of just the brain after the same uptake period used in all other PET exams.