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Topic: Radiation Absorbed Dose


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In the News (Wed 23 Dec 09)

  
  Encyclopedia :: encyclopedia : Radiation poisoning   (Site not responding. Last check: 2007-10-26)
Radiation poisoning, also called "radiation sickness", is a form of damage to organic tissue due to excessive exposure to ionizing radiation.
The rad is a unit of absorbed radiation dose defined in terms of the energy actually deposited in the tissue.
One rad is an absorbed dose of 0.01 joules of energy per kilogram of tissue.
www.hallencyclopedia.com /Radiation_poisoning   (1903 words)

  
 The Herb Lady   (Site not responding. Last check: 2007-10-26)
Despite better technology and decreased doses of radiation, scientists still claim mammography is a substantial risk.
John W. Gofman, an authority on the health effects of ionizing radiation, estimates that 75 percent of breast cancer could be prevented by avoiding or minimizing exposure to the ionizing radiation.
Furthermore, there is clear evidence that the breast, particularly in premenopausal women, is highly sensitive to radiation, with estimates of increased risk of breast cancer of up to 1% for every rad (radiation absorbed dose) unit of X-ray exposure.
www.herbsistah.com /26493.html?*session*id*key*=*session*id*val*   (3997 words)

  
 Nukefix-ums from the past
Because the radiation levels would tend to be low, the study indicates that, "we might expect that following such an attack, the UK authorities would not advocate long-term evacuations of the contaminated zones [p.
This is because 95% of the dose accrues via inhalation in the first few hours of exposure and the model assumes that a 'normal' urbanized population 90% of individuals are indoors.
sievert, "the SI unit of radiation absorbed dose equivalent, defined as that producing the same biologic effect in a specified tissue as 1 gray of high-energy x-rays; 1 sievert equals 100 rem.
www.nukefix.org /nukefix-um002.html   (14604 words)

  
 Mammograms cause breast cancer (and other cancer facts you probably never knew) at Cancer Debate Forum
Despite continuous improvements and innovations, mammography has garnered a sizable opposition in the medical community because of an error rate that is still high and the amount of harmful radiation used in the procedure.
In women between the ages of 35 and 50, each rad of exposure increased the risk of breast cancer by one percent, according to Dr. Frank Rauscher, then-director of the NCI.
One Canadian study found a 52 percent increase in breast cancer mortality in young women given annual mammograms, a procedure whose stated purpose is to prevent cancer.
www.curezone.com /forums/m.asp?f=695&i=2   (4508 words)

  
 USAF Flight Surgeon's Guide: Chapter 21   (Site not responding. Last check: 2007-10-26)
Rad is an acronym for radiation absorbed dose.
However, with the exposure of one rad of alpha particles the rem would be 20.
Although these are the maximum allowable doses which could be accumulated, the Air Force must follow, by law, the ALARA (as low as reasonably achievable) philosophy.
www.brooks.af.mil /af/files/fsguide/HTML/Chapter_21.html   (12707 words)

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