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positron
positron Physics. (ˈpɒzɪtrɒn) [f. positive a. and n. + electron2.] The anti-particle of the ordinary (negative) electron, having the same mass and a numerically equal but positive charge.1933 C. D. Anderson in Science 5 May 432/2 Experiments have been carried out which gave conclusive evidence that ... Oxford English Dictionary
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Positron (disambiguation)
A positron is an elementary particle of antimatter. Positron may also refer to: Positron (video game), the 1983 video game published by Micro Power Positron! wikipedia.org
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Positron Emission Tomography (PET) | Johns Hopkins Medicine
Positron emission tomography (PET) is a type of nuclear medicine procedure that measures metabolic activity of the cells of body tissues. PET is actually a combination of nuclear medicine and biochemical analysis. Used mostly in patients with brain or heart conditions and cancer, PET helps to visualize the biochemical changes taking place in ...
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Positron Emission Tomography (PET) | American Heart Association
Dec 7, 2022It uses radioactive tracers (called radionuclides) to produce pictures of your heart. Health care professionals use cardiac PET scans to diagnose coronary artery disease (CAD) and damage due to a heart attack. PET scans can show healthy and damaged heart muscle. PET scans are also used to help find out if you will benefit from a percutaneous ...
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Positron Emission Tomography and Computed Tomography (PET-CT) Scans
Approved by the Cancer.Net Editorial Board, 02/2020. A positron emission tomography scan is known as a PET scan. PET scan is a type of test that may be used in cancer treatment. It can be done along with a CT scan. If so, doctors call it a PET-CT scan. But you might also just hear it called a PET scan. For some types of cancer, a PET-CT scan is ...
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Positron emission tomography scan - Mayo Clinic
Apr 18, 2023A positron emission tomography (PET) scan is an imaging test that can help reveal the metabolic or biochemical function of your tissues and organs. The PET scan uses a radioactive drug called a tracer to show both typical and atypical metabolic activity. A PET scan can often detect the atypical metabolism of the tracer in diseases before the ...
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positron
positron/ˈpɔzɪtrɔn; `pɑzɪˌtrɑn/ n(physics 物) minute piece of matter (elementary particle) that has a positive electric charge and the same mass as an electron 正电子; 阳电子. Cf 参看 electron. 牛津英汉双解词典
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New positron source could give lepton colliders a boost
2 days ago — Developed by Nicolas Vallis and colleagues at the Paul Scherrer Institute (PSI), the design uses high-temperature-superconductor magnets to ...
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Positron - Wikipedia
2. The positron or antielectron is the particle with an electric charge of +1 e, a spin of 1/2 (the same as the electron), and the same mass as an electron. It is the antiparticle ( antimatter counterpart) of the electron. When a positron collides with an electron, annihilation occurs. If this collision occurs at low energies, it results in the ...
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Positron Corporation
Positron Corporation is an American nuclear medicine healthcare company specializing in cardiac Positron Emission Tomography (PET) imaging. History Positron was founded in 1983 as a research and development company. wikipedia.org
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Replacing a Positron II with a modern gear shift I was tinkering on an old Enik Roadbike (see here: Convert old road bike to comfortable commuter). Most of the parts were still working fine, but the Positron II was no...
Positron doesn't have return spring but instead uses single wire for pushing and pulling.
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Positron (video game)
Positron has no such limits leading to a much quicker game. "Positron is a fast moving, colourful and satisfying game. wikipedia.org
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Positron! Records
Positron Records is an independent record label based in Chicago, Illinois. Positron describes itself as an "anti-label" because they release only a handful of albums and give as much support to each release as they can. wikipedia.org
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Positron emission
Positron emission is mediated by the weak force. This was the first example of  decay (positron emission). wikipedia.org
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Positron annihilation spectroscopy
Positron annihilation spectroscopy (PAS) or sometimes specifically referred to as positron annihilation lifetime spectroscopy (PALS) is a non-destructive Furthermore, the momentum density of annihilating electron-positron pairs is enhanced near the Fermi surface. wikipedia.org
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