Reference Terms
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Positron emission tomography
Positron emission tomography (PET) is a nuclear medicine medical imaging technique which produces a three dimensional image or map of functional processes in the body.
Note: The above text is excerpted from the Wikipedia article "Positron emission tomography", which has been released under the GNU Free Documentation License.
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Matter & Energy News
January 24, 2025
Jan. 21, 2025 — Experiments have yielded a fascinating new type of matter, neither granular nor crystalline, that responds to some stresses as a fluid would and to others like a solid. The new material, known as PAM (for polycatenated architected materials) could ...
Jan. 15, 2025 — Researchers have demonstrated new wearable technologies that both generate electricity from human movement and improve the comfort of the technology for the people wearing them. The work stems from an advanced understanding of materials that ...
Jan. 15, 2025 — Astronomers have detected an intensely brightening and dimming quasar that may help explain how some objects in the early universe grew at a highly accelerated rate. The discovery is the most distant object detected by the NuSTAR X-ray space ...
Jan. 14, 2025 — Engineers have demonstrated a well-known quantum thought experiment in the real world. Their findings deliver a new and more robust way to perform quantum computations and they have important ...
Latest Headlines
updated 12:56 pm ET
Jan. 23, 2025 — Chirality is a fundamental property of matter that determines many biological, chemical and physical phenomena. Chiral solids, for example, offer exciting opportunities for catalysis, sensing and ...
Jan. 23, 2025 — Engineers have invented a microscopic spectral sensor that can identify myriad materials with unprecedented ...
Jan. 23, 2025 — Researchers have developed a new type of optical memory called a programmable photonic latch that is fast and scalable, enabling temporary data storage in optical processing systems and offering a ...
Jan. 24, 2025 — Researchers have used machine learning to design nano-architected materials that have the strength of carbon steel but the lightness of Styrofoam. ...
Jan. 24, 2025 — Researchers used cutting-edge X-ray techniques to gain new insights into 'infinite-layer' nickelate ...
Jan. 24, 2025 — A research team has made significant discoveries regarding the complex reaction mechanisms of carbon dioxide (CO2) in supercritical water. These ...
Jan. 24, 2025 — A scientific team looks at the progress and challenges in the research and development of brain implants. New achievements in the field of this technology are seen as a source of hope for many ...
Jan. 24, 2025 — Large batteries for long-term storage of solar and wind power are key to integrating abundant and renewable energy sources into the U.S. power grid. However, there is a lack of safe and reliable ...
Jan. 21, 2025 — An interdisciplinary team has developed a groundbreaking technology that addresses key limitations in clean hydrogen production using microwaves. They have also successfully elucidated the underlying ...
Jan. 21, 2025 — Water desalination plants could replace expensive chemicals with new carbon cloth electrodes that remove boron from seawater, an important step of ...