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Brain positron emission tomography is a form of positron emission tomography (PET) that is used to measure brain metabolism and the distribution of exogenous radiolabeled chemical agents throughout the brain. PET measures emissions from radioactively labeled metabolically active chemicals that have been injected into the bloodstream.
Positron emission tomography (PET) [1] is a functional imaging technique that uses radioactive substances known as radiotracers to visualize and measure changes in metabolic processes, and in other physiological activities including blood flow, regional chemical composition, and absorption.
PET is a functional imaging technique that produces a three-dimensional image of functional processes in the body. The system detects pairs of gamma rays emitted indirectly by a positron -emitting radionuclide ( tracer ), which is introduced into the body on a biologically active molecule.
This is a list of positron emission tomography (PET) radiotracers. These are chemical compounds in which one or more atoms have been replaced by a short-lived, positron emitting radioisotope. Cardiology
In medicine, tracers are applied in a number of tests, such as 99m Tc in autoradiography and nuclear medicine, including single-photon emission computed tomography (SPECT), positron emission tomography (PET) and scintigraphy. The urea breath test for helicobacter pylori commonly used a dose of 14 C labeled urea to detect h. pylori infection. If ...
[18 F]Fluorodeoxyglucose (), or fluorodeoxyglucose F 18 (USAN and USP), also commonly called fluorodeoxyglucose and abbreviated [18 F]FDG, 2-[18 F]FDG or FDG, is a radiopharmaceutical, specifically a radiotracer, used in the medical imaging modality positron emission tomography (PET).
The general location of the sentinel node is determined with the use of a handheld scanner with a gamma-sensor probe that detects the technetium-99m–labeled tracer that was previously injected around the biopsy site. An injection of Methylene blue or isosulfan blue is done at the same time to dye any draining nodes visibly blue. An incision ...
Thus, in cases when different tracers are radiolabeled with isotopes of different energies, SPECT provides the ability to probe several molecular pathways simultaneously (multi-isotope imaging). Two examples of common multi-isotope tracer combinations used for SPECT imaging are 123 I- NaI / 99m Tc- pertechnetate (thyroid function [ 27 ] ) or ...