Related topics: cancer , patients , radiation oncology , radiation dose , ct scan
Radiation
hideIn physics, radiation describes any process in which energy emitted by one body travels through a medium or through space, ultimately to be absorbed by another body. Non-physicists often associate the word with ionizing radiation (e.g., as occurring in nuclear weapons, nuclear reactors, and radioactive substances), but it can also refer to electromagnetic radiation (i.e., radio waves, infrared light, visible light, ultraviolet light, and X-rays) which can also be ionizing radiation, to acoustic radiation, or to other more obscure processes. What makes it radiation is that the energy radiates (i.e., it travels outward in straight lines in all directions) from the source. This geometry naturally leads to a system of measurements and physical units that are equally applicable to all types of radiation.
For more information about Radiation, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
News tagged with radiation
Lung cancer and melanoma laid bare: First comprehensive analysis of two cancer genomes
Dec 16, 2009 |
5 / 5 (4) |
0
Research teams led by the Wellcome Trust Sanger Institute announce the first comprehensive analyses of cancer genomes. All cancers are caused by mutations in the DNA of cancer cells which are acquired during a person's lifetime. ...
How water forms where Earth-like planets are born
Dec 17, 2009 |
4.9 / 5 (9) |
1
(PhysOrg.com) -- In a study that helps to explain the origins of water on Earth, University of Michigan astronomers have found that water vapor can form spontaneously in habitable zones of solar systems, and that it develops ...
Study reveals chemo's toxicity to brain, possible treatment
Dec 17, 2009 |
5 / 5 (2) |
0
Researchers have developed a novel animal model showing that four commonly used chemotherapy drugs disrupt the birth of new brain cells, and that the condition could be partially reversed with the growth factor IGF-1.
Maine to consider cell phone cancer warning
9 hours ago |
not rated yet |
0
(AP) -- A Maine legislator wants to make the state the first to require cell phones to carry warnings that they can cause brain cancer, although there is no consensus among scientists that they do and industry leaders dispute ...
Herschel Space Telescope uncovers the sources of the Cosmic Infrared Background
Dec 16, 2009 |
5 / 5 (12) |
4
(PhysOrg.com) -- Using first observations with the PACS Instrument on board ESA’s Herschel Space Telescope, scientists from the Max Planck Institute for Extraterrestrial Physics and other institutions have ...
Ecosystem, vegetation affect intensity of urban heat island effect
Space & Earth / Earth Sciences
Dec 15, 2009 |
5 / 5 (2) |
0
NASA researchers studying urban landscapes have found that the intensity of the "heat island" created by a city depends on the ecosystem it replaced and on the regional climate. Urban areas developed in arid and semi-arid ...
Sunshine speeded 1940s Swiss glacier melt: scientists
Space & Earth / Earth Sciences
Dec 14, 2009 |
5 / 5 (4) |
4
A surge in sunshine more than 60 years ago helped Swiss mountain glaciers melt faster than today, even though warmer average temperatures are being recorded now, Swiss researchers said Monday.
FDA researchers identify new MRI safety risk for patients with pacemakers
Dec 15, 2009 |
3.5 / 5 (2) |
0
FDA researchers have found that certain cardiac pacemakers may inadequately stimulate a patient's heart while undergoing a magnetic resonance imaging (MRI) scan due to the magnetic pulses mixing with the electronic pulses ...
Studies quantify radiation doses, cancer risks from CT scans
Dec 15, 2009 |
not rated yet |
0
Doses of radiation from commonly performed computed tomography (CT) scans vary widely, appear higher than generally believed and may contribute to an estimated tens of thousands of future cancer cases, according to two reports ...
Studying ice crystals to understand the cloud-climate connection
Space & Earth / Earth Sciences
Dec 14, 2009 |
4.3 / 5 (6) |
0
(PhysOrg.com) -- Beginning in mid-December, scientists will undertake a special mission to squeeze the secrets out of ice crystals in cirrus clouds. The SPARTICUS, or Small Particles in Cirrus, campaign will ...
Study finds racial disparities exist in radiation therapy rates for early stage breast cancer
Dec 14, 2009 |
not rated yet |
0
Black women are less likely than white women to receive radiation therapy after a lumpectomy, the standard of care for early stage breast cancer, according to a new study by researchers at The University of Texas M. D. Anderson ...
