Positron Emission Tomography is a non-invasive imaging technique that reports the functional activity, constitution and physiology of cells in the human body. PET scans are accurate and help in diagnosing diseases including cancer at early stages. The process completes and confirms the finding of all other scans that are being used to study body internal structures.
The different types of PET scan seen in the medical world today are targeted towards different parts of the body and may use specific chemicals. They are as follows:
Fluorodeoxyglucose FDG PET: Fluorodeoxyglucose, also called FDG is used as a radiopharmaceutical in PET procedure. It is a sugar like substance that carries the radioactive element in it. We all know that tumours need sugars to proliferate. FDG PET is used to image almost all types of tumours in any part of the human body. Specifically, it is useful in creating exact functional images of inflammation, brain function and infection.
DOTA-NOC and DOTA-TATE (GaTate) PET: This procedure is mainly used for creating images of phaeochromycytoma , paraganglioma, neuroendocrine tumours, or neuroblastoma.
Fluoride bone PET: This procedure is used to create the scans of bones.
FLT PET: This procedure uses Fluorothymidine , also known as FLT to create images for fast replicating cells. Currently this procedure is widely used to image bone marrow function, clinical trials, and brain tumours.
FCH PET: Fluorocholine (FCH) is used in this procedure to image prostate cancer.
FET PET: This procedure uses Fluoroethyltyrosine (FET) and is used to image brain tumours.