News tagged with positrons
CAMH discovery identifies potential target for anti-craving medications
Scientists at the Centre for Addiction and Mental Health (CAMH) have identified a potential target for the development of anti-craving medications for people with addictions to stimulants such as methamphetamine.
Medicine & Health / Neuroscience
Jan 25, 2012 |
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Scientists report first step in strategy for cell replacement therapy in Parkinson's disease
Induced pluripotent stem cells (iPSC) are a promising avenue for cell replacement therapy in neurologic diseases. For example, mouse and human iPSCs have been used to generate dopaminergic (DA) neurons that improve symptoms ...
Jan 24, 2012 |
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Belle discovers new heavy 'exotic hadrons'
(PhysOrg.com) -- Two unexpected new hadrons containing bottom quarks have been discovered by the Belle Experiment using the High Energy Accelerator Research Organization (KEK)'s B Factory (KEKB), a highly-luminous, ...
Jan 10, 2012 |
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From heterogeneous patient measurements towards earlier diagnosis in Alzheimer's disease
European PredictAD project, lead by Principal Scientist Jyrki Lotjonen from VTT Technical Research Centre of Finland, has developed a decision support tool for objective diagnostics of Alzheimer's disease. The tool compares ...
Dec 15, 2011 |
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Still in the dark about dark matter
Dark matter, the mysterious stuff thought to make up about 80 percent of matter in the universe, has become even more inscrutable.
Dec 06, 2011 |
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Brightest gamma ray on Earth -- for a safer, healthier world
The brightest gamma ray beam ever created- more than a thousand billion times more brilliant than the sun- has been produced in research led at the University of Strathclyde- and could open up new possibilities ...
Sep 19, 2011 |
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Fermi gamma-ray space telescope confirms puzzling preponderance of positrons
(PhysOrg.com) -- By finding a clever way to use the Earth itself as a scientific instrument, members of a SLAC-led research team turned the Fermi Gamma-ray Space Telescope into a positron detector – and ...
Sep 13, 2011 |
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New way to produce antimatter-containing atom discovered
(PhysOrg.com) -- Physicists at the University of California, Riverside report that they have discovered a new way to create positronium, an exotic and short-lived atom that could help answer what happened ...
Jul 11, 2011 |
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PET scan with [11C]erlotinib may provide noninvasive method to identify TKI-responsive lung tumors
A non-invasive PET imaging technique may identify lung cancers that respond best to tyrosine kinase inhibitors (TKIs), allowing doctors to better select patients for personalized therapy, according to research presented at ...
Jul 05, 2011 |
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New therapy for childhood neuroblastoma proves feasible and safe
A new treatment option may soon be available for children with neuroblastoma according to research published in the July issue of The Journal of Nuclear Medicine. The study tested the principle that combined positron emissi ...
Jun 29, 2011 |
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Raman nanoparticle-aided imaging of tumors moves closer to human trials
(PhysOrg.com) -- In 2008, a team of investigators at Stanford University's Center for Cancer Nanotechnology Excellence demonstrated that they could use a technique known as nanoparticle-aided Raman spectroscopy to look at ...
Nanotechnology / Bio & Medicine
Jun 28, 2011 |
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FDA clears Siemens' 2-in-1 medical scanner
(AP) -- The Food and Drug Administration says it has cleared the first medical imaging device to simultaneously perform two powerful scans used to diagnose a wide variety of diseases and ailments.
Medicine & Health / Medications
Jun 10, 2011 |
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PET scans predict effectiveness of treatment for multidrug-resistant tuberculosis in HIV patients
With the deficiencies in knowledge of tuberculosis -- as well as in the practices, programs and strategies used to combat the disease and co-infection with human immunodeficiency virus (HIV) -- the spread of multidrug-resistant ...
May 24, 2011 |
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CERN scientists confine antihydrogen atoms for 1000 seconds
(PhysOrg.com) -- Seventeen minutes may not seem like much, but to physicists working on the Antihydrogen Laser Physics Apparatus (ALPHA) project at the CERN physics complex near Geneva, 1000 seconds is nearly ...
May 04, 2011 |
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Benefit of PET in patients with head and neck tumors cannot be assessed
The benefit and harm of positron emission tomography (PET) in patients with head and neck tumours, applied alone or in combination with computed tomography (CT), cannot currently be reliably assessed. This is the result of ...
Apr 29, 2011 |
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Positron
The positron or antielectron is the antiparticle or the antimatter counterpart of the electron. The positron has an electric charge of +1e, a spin of ½, and has the same mass as an electron. When a low-energy positron collides with a low-energy electron, annihilation occurs, resulting in the production of two or more gamma ray photons (see electron-positron annihilation).
Positrons may be generated by positron emission radioactive decay (through weak interactions), or by pair production from a sufficiently energetic photon.
For more information about Positron, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
