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.
DaT scan detects the presence of dopamine transporters in the brain. When the patient is injected with the contrast agent, the SPECT scan takes place and it captures detailed neuro-images of the brainâs dopamine system, providing visual evidence of the transporters.