News tagged with ionizing radiation
Researchers with the U.S. Department of Energy (DOE)'s Lawrence Berkeley National Laboratory (Berkeley Lab), through a combination of time-lapse live imaging and mathematical modeling of a special line of ...
Cancer Dec 20, 2011 | 4.5 / 5 (11) | 4 |
Scientists from the universities of Zurich and Duisburg-Essen have discovered a specific function of the protein p97/VCP. They demonstrate that the protein repairs DNA breaks like a corkscrew, a repair mechanism that could ...
Medical research Nov 08, 2011 | 5 / 5 (3) | 0
People who received frequent dental x-rays in the past have an increased risk of developing the most commonly diagnosed primary brain tumor in the United States. That is the finding of a study published early online in Cancer, a peer ...
Cancer Apr 10, 2012 | 5 / 5 (2) | 0 |
Study of Atomic-Bomb Survivors: Even lower levels of ionizing radiation exposure may lead to soft tissue cancers
In one of the largest and longest follow-up studies ever conducted to assess the effects of ionizing radiation upon the development of soft tissue sarcomas in humans, the investigators found that much lower levels than previously ...
Surgery Feb 11, 2013 | 5 / 5 (2) | 0
Scientists at the Salk Institute for Biological Studies have found clues to the functioning of an important damage response protein in cells. The protein, p53, can cause cells to stop dividing or even to commit suicide when ...
Genetics Jun 30, 2011 | 4 / 5 (2) | 1 |
Research introduced at SNM's 58th Annual Meeting could be a sign of hope for patients with neuroendocrine cancer not responding well to standard therapies. Most radiotherapies use medical isotopes that emit beta radiation. ...
Cancer Jun 06, 2011 | 5 / 5 (1) | 0
Developmental dislocation (dysplasia) of the hip (DDH) is a common congenital condition in which a child's upper thighbone is dislocated from the hip socket. The condition can be present at birth or develop during a child's ...
Other Feb 09, 2012 | 5 / 5 (1) | 0
Rush University Medical Center will begin offering in late March a new stereotactic radiosurgery treatment program with the latest radiation therapy technology available.
Cancer Mar 26, 2012 | 5 / 5 (1) | 0
Ohio State University cancer researchers have identified molecules in the bloodstream that might accurately gauge the likelihood of radiation illness after exposure to ionizing radiation.
Cancer Feb 25, 2013 | 5 / 5 (1) | 0 |
Researchers at Moffitt Cancer Center have found that a deficiency in an important anti-tumor protein, p53, can slow or delay DNA repair after radiation treatment. They suggest that this is because p53 regulates the expression ...
Cancer Apr 23, 2013 | 4 / 5 (1) | 0 |
A study conducted by Hebrew University researchers has found that that there can be very short latency periods between the time of exposure and development of cancer in workers in tasks with intense or prolonged exposure ...
Cancer Aug 15, 2011 | 1 / 5 (1) | 0
Ionizing radiation consists of subatomic particles or electromagnetic waves that are energetic enough to detach electrons from atoms or molecules, ionizing them. The occurrence of ionization depends on the energy of the impinging individual particles or waves, and not on their number. An intense flood of particles or waves will not cause ionization if these particles or waves do not carry enough energy to be ionizing. Roughly speaking, particles or photons with energies above a few electron volts (eV) are ionizing.
Examples of ionizing particles are energetic alpha particles, beta particles, and neutrons. The ability of electromagnetic waves (photons) to ionize an atom or molecule depends on their wavelength. Radiation on the short wavelength end of the electromagnetic spectrum - ultraviolet, x-rays, and gamma rays - is ionizing.
Ionizing radiation comes from radioactive materials, x-ray tubes, particle accelerators, and is present in the environment. It is invisible and undetectable by human senses, so instruments such as geiger counters are required to detect its presence. It has many practical uses in medicine, research, construction, and other areas, but presents a health hazard if used improperly. Exposure to radiation causes microscopic damage to living tissue, resulting in skin burns, radiation sickness and death at high doses and cancer, tumors and genetic damage at low doses.
For more information about Ionizing radiation, read the full article at
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