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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. Different tracers are used for various imaging ...
Positron emission tomography–computed tomography (better known as PET-CT or PET/CT) is a nuclear medicine technique which combines, in a single gantry, a positron emission tomography (PET) scanner and an x-ray computed tomography (CT) scanner, to acquire sequential images from both devices in the same session, which are combined into a single superposed (co-registered) image.
PET-MRI systems don't offer a direct way to obtain attenuation maps, unlike stand-alone PET or PET-CT systems. [ 32 ] [ 33 ] Stand alone PET systems' attenuation correction (AC) is based on a transmission scan (mu - map) acquired using a 68 Ge ( Germanium-68 ) rotating rod source, which directly measures photon attenuation at 511 keV.
The standardized uptake value (SUV) is a nuclear medicine term, used in positron emission tomography (PET) as well as in modern calibrated single photon emission tomography (SPECT) imaging for a semiquantitative analysis. [1] Its use is particularly common in the analysis of [18 F]fluorodeoxyglucose ( [18 F]FDG) images of cancer patients.
Theranostics, also known as theragnostics, [1] is a technique commonly used in personalised medicine. For example in nuclear medicine, one radioactive drug is used to identify (diagnose) and a second radioactive drug is used to treat (therapy) cancerous tumors. [2][3][4] In other words, theranostics combines radionuclide imaging and radiation ...
Piflufolastat F-18. Piflufolastat F-18, sold under the brand name Pylarify among others, is a radioactive diagnostic agent used for positron emission tomography (PET) imaging. [1][4][5] It is given by intravenous injection. [1][4] The most common adverse reactions include headache, altered taste, and fatigue. [4]
As a result, FDG-PET can be used for diagnosis, staging, and monitoring treatment of cancers, [21] particularly in Hodgkin's disease, non-Hodgkin lymphoma, colorectal cancer, breast cancer, melanoma, and lung cancer. It has also been approved for use in diagnosing Alzheimer's disease.
A fully automated radiosynthesis interface of PET-radiotracers. 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 ...