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Topic: Radiation



  
 Ionizing radiation - Wikipedia, the free encyclopedia
The associations between ionizing radiation exposure and the development of cancer are mostly based on populations exposed to relatively high levels of ionizing radiation, such as Japanese atomic bomb survivors, and recipients of selected diagnostic or therapeutic medical procedures.
By far, the most significant source of man-made radiation exposure to the general public is from medical procedures, such as diagnostic X-rays, nuclear medicine, and radiation therapy.
Because UV radiation, especially UV-C, exceeds the ionization energy of many of the elements, it is often considered ionizing radiation rather than non-ionizing radiation.
http://en.wikipedia.org/wiki/Ionizing_radiation   (3455 words)

  
 Radiation Therapy
The radiation oncologist is the medical doctor in charge of a patient's radiation treatment.
During the radiation course, patients are monitored by the radiation oncologist and his/her staff.
The radiation therapist is the person who delivers the radiation each day and will be working under the orders and the prescription of the radiation oncologist.
http://www.tirgan.com/radiation.htm   (1568 words)

  
 ACS :: Radiation Therapy Principles
Radiation therapy may be given from an external source, a source placed inside the body, or even as part of a drug...
During your radiation therapy, you will be cared for by a team of medical professionals...
These documents are intended to help you understand what radiation therapy is, how it is used to treat cancer, and what some of the common side effects are.
http://www.cancer.org/docroot/ETO/eto_1_3_Radiation_Therapy.asp   (388 words)

  
 Imaginis - Radiation Therapy for the Treatment of Breast Cancer
External beam radiation is delivered from a source outside the body on the specific area of the body that has been affected by the cancer.
Occasionally, radiation therapy is used before surgery to shrink the size of a tumor.
Before radiation therapy begins, the physician will measure the correct angles for aiming the radiation beam at the specific area of the body and make ink marks on the patient’s skin.
http://imaginis.com/breasthealth/radio_bctreatment.asp   (1258 words)

  
 Sloan-Kettering - Breast Cancer: Radiation Therapy
Radiation therapy works by causing changes at the molecular level in tissues where the radiation beam is targeted.
IMRT and three-dimensional conformal radiation therapy already are effective treatments for prostate cancer and are proving to be useful in treating breast cancer, as well.
Because the risk of side effects is greater when radiation therapy is used a second time, our physicians can help minimize those effects while maximizing the patient's chances of successful treatment.
http://www.mskcc.org/mskcc/html/2381.cfm   (576 words)

  
 Electromagnetic Radiation Encyclopedia Article, Information, History and Biography @ NaturalResearch.org
The physics of electromagnetic radiation is electrodynamics, a subfield of electromagnetism.
If radiation having a frequency in the visible region of the EM spectrum reflects off of an object, say, a bowl of fruit, and then strikes our eyes, this results in our visual perception of identifying information from the scene.
The behavior of EM radiation depends on its wavelength.
http://www.naturalresearch.org/encyclopedia/Electromagnetic_radiation   (2204 words)

  
 An Introduction to Radiation Hormesis
It is widely believed that radiation biology in the future will be focused on biomolecular and genetic implications, problems of damage and repair and connected problems such as radiation hormesis and radioadaptive response.
That is, low-level ionizing radiation may be an essential trace energy for life, analogous to essential trace elements.
All living organisms evolved and exist in a sea of ionizing radiation, much of which is internal.
http://www.angelfire.com/mo/radioadaptive/inthorm.html   (2662 words)

  
 Clavius: Environment - radiation primer
The important concept is that exposure is measured by what radiation does to substances, not anything particular about the radiation itself.
The radiation exposure will be more intense, but it will not last as long.
Above we discussed that different kinds of radiation are inherently more dangerous than others.
http://www.clavius.org/envradintro.html   (2850 words)

  
 radiation
As part of radiation treatments for cancer, people are sometimes exposed to radiation up to where they get acute radiation sickness.
This is the professional society concerned with monitoring human exposure to radiation.
The largest average human exposure to radiation is from medical X-rays.
http://www-formal.stanford.edu/jmc/progress/radiation.html   (1115 words)

  
 Radiation Safety Manual
Ensure that all problems in the laboratory related to radiation safety are identified and corrected in a timely manner or as soon as identified as the result of an authorized survey.
All Authorized Users and Radiation Workers under their supervision who work with radioisotopes must receive instruction on radiation safety, biological effects of radiation, regulatory requirements, and laboratory techniques.
The manual is a practical reference, but users must also have technical knowledge of radiation and some experience in handling radioactive materials.
http://www.cdc.gov/od/ohs/manual/radman.htm   (12006 words)

  
 EPA - What is Radiation ? (EPA's Radiation Protection Program: Visitors' Center)
This is similar to the way radiation exposure works.
There are three concepts in basic radiation protection.
The remaining twenty percent comes from man-made radiation sources, primarily medical X-rays.
http://www.epa.gov/radiation/students/what.html   (871 words)

  
 Radiation Effects
RERF research includes the study of deaths and the incidence of cancer occurring among atomic-bomb survivors.
Death rates and cancer incidence are being monitored for this group.
They wanted to study the effects of radiation, but did not provide medical attention.
http://www.hiroshima-is.ac.jp/Hiroshima/radiation.htm   (3727 words)

  
 Radiation
For biologists, the most significant forms of radiation are light, heat, and ionizing radiation.
Individual exposures, especially to radon and medical sources, vary widely from these average values.
About 27% of our annual exposure to radiation is from background radiation:
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/R/Radiation.html   (756 words)

  
 MedlinePlus Medical Encyclopedia: Radiation therapy
Radiation therapy is used to fight many types of cancer.
Radiation can also be given after surgery to prevent the cancer from coming back.
Radiation treatment may also be used to provide temporary relief of symptoms, or to treat malignancies (cancers) that cannot be removed with surgery.
http://www.nlm.nih.gov/medlineplus/ency/article/001918.htm   (376 words)

  
 Radiation Studies CDC RSB
One aspect of this work is its radiation studies program, which looks at the relationship between environmental radiation exposures and public health.
CDC provides basic information on radiation and its health effects as well as emergency instructions for individuals and families.
CDC has worked with the governments of other nations to look at environmental radiation exposures and their health effects.
http://www.cdc.gov/nceh/radiation   (270 words)

  
 CDC Radiation Emergencies
What you need to know about radiation sickness.
(For non-emergency radiation information, see the Radiation Studies website.)
Instructs clinicians on how to distinguish between radiation exposure and contamination; recognize the signs and symptoms of acute radiation syndrome and cutaneous radiation syndrome; and decontaminate a patient.
http://www.bt.cdc.gov/radiation/index.asp   (831 words)

  
 Issues - Radiation
Manmade radiation benefits our daily lives in many ways, but radiation can also pose risks.
Radiation in Our World: Fun Facts and Activities (.pdf, 448Kb)
Actions You Can Take to Control Radiation Exposure
http://www.nsc.org/issues/radisafe.htm   (108 words)

  
 Radiation Therapy
This section of breastcancer.org will help you face the challenges of radiation therapy by:
Next Page: Ten Key Points About Radiation Therapy
Despite what many women fear, radiation therapy is relatively easy to tolerate, and the side effects are restricted to the area being treated.
http://www.breastcancer.org/tre_rad_idx.html   (184 words)

  
 CDC Radiation Emergencies Frequently Asked Questions (FAQs) About a Radiation Emergency
About 80% of human exposure comes from natural sources and the remaining 20% comes from man-made radiation sources – mainly medical x-rays.
Radiation can affect the body in a number of ways, and the adverse health effects of exposure may not be apparent for many years.
Exposure to lower doses of radiation may lead to an increased risk of developing cancer or other adverse health effects later in life.
http://www.bt.cdc.gov/radiation/emergencyfaq.asp   (1440 words)

  
 Howstuffworks "How Nuclear Radiation Works"
Nuclear materials (that is, substances that emit nuclear radiation) are fairly common and have found their way into our normal vocabularies in many different ways.
Nuclear radiation can be both extremely beneficial and extremely dangerous.
All of these terms are related by the fact that they all have something to do with nuclear elements, either natural or man-made.
http://www.howstuffworks.com/nuclear.htm   (188 words)

  
 Radiation Control - Minnesota Dept. of Health
Daily, we are all exposed to low levels of ionization radiation through natural background or cosmic radiation, diagnostic and therapeutic medical applications, radioactive materials, the build-up of radon in some buildings, industrial applications, and nuclear power plants.
Ionizing radiation can be instrumental in the improvement of health, welfare, and productivity of the public if properly used, and may impair the health of people and the industrial and agricultural potentials of the state if improperly used.
While the United States Nuclear Regulatory Commission regulates nuclear power plants and most radioactive materials, Minnesota's Radiation Control program is responsible for regulating machine produced sources of radiation to which the public may be exposed.
http://www.health.state.mn.us/divs/eh/radiation   (218 words)

  
 Electromagnetic Spectrum - Introduction
Radio waves, visible light, X-rays, and all the other parts of the electromagnetic spectrum are fundamentally the same thing, electromagnetic radiation.
Other examples of EM radiation are microwaves, infrared and ultraviolet light, X-rays and gamma-rays.
Electromagnetic radiation can be described in terms of a stream of photons, which are massless particles each traveling in a wave-like pattern and moving at the speed of light.
http://imagine.gsfc.nasa.gov/docs/science/know_l1/emspectrum.html   (1292 words)

  
 rat haus reality: the health costs of low-level ionizing radiation
His work has already changed the way the world views the dangers of radiation, and his latest book [Radiation from Medical Procedures] will -- eventually, after a long fight -- revolutionize the way the world looks at medical radiation.
Nuclear Radiation and its Biological Effects, an essential lay-person's primer
the health costs of man-made low-level ionizing radiation.
http://www.ratical.org/radiation   (413 words)

  
 Martindale's Calculators On-Line Center: Radiation, Radioactivity
GALACTIC RADIATION RECEIVED IN FLIGHT - Radiobiology Research Team, Aerospace Medical Research, FAA VERY EXTENSIVE.
OPTICAL RADIATION SAFETY CALCULATOR - X.A. Chen, Vision Science and Technology Group, Ames Research Center, NASA VERY EXTENSIVE.
These DCFs are used to convert a radionuclide concentration in soil, air, water, or foodstuffs to a radiation dose..." For more information see Radionuclide ARAR Dose Compliance Concentrations (DCCs) Home Page; Risk Assessment or the Superfund
http://www.martindalecenter.com/CalculatorsD_Rad.html   (912 words)

  
 RadBio.net - Index - The Radiation Therapy, Brachytherapy and Oncology Community
RadBio.net - Index - The Radiation Therapy, Brachytherapy and Oncology Community
Residents -- place your reviews of Academic Programs here
Last post on March 25, 2005, 06:34:12 PM in Re: Radiation Oncology I...
http://radbio.net   (300 words)

  
 The Why Files 1. Radiation, 60 years later
Long-term studies of atomic-bomb survivors at Hiroshima and Nagasaki are key evidence on the health impact of low-level radiation.
CT scans are a valuable medical tool, but they increase our exposure to ionizing radiation.
The answer to these questions hinges on the health effects of low-level radiation.
http://whyfiles.org/020radiation   (408 words)

  
 Radiation Detection and Experimentation Page
Sources of Natural Radiaion, radiation is all around us, naturally.
Radiation existed long before Man, even though some would have you believe otherwise.
The two Radium isotopes both undergo beta decay, and it is their radiation we detect in this experiment.
http://www.blackcatsystems.com/science/radiation.html   (1736 words)

  
 Radiation Safety
Radiation and Health Physics (Collection from University of Michigan)
Questions and Answers About the Biological Effects of Radiofrequency Radiation (FCC)
Radiation Dose and Risk Modeling Home Page (EPA)
http://www.pp.okstate.edu/ehs/links/rad.htm   (92 words)

  
 Anti-radiation Missile Encyclopedia Article, Information, History and Biography @ LaunchBase.net
Smart SAM operators learned to turn their radar off when an ARM was fired at them then turn it back on later, greatly reducing the missile's effectiveness.
Early ARMs AGM-45 Shrike weren't particularly intelligent; they would simply home in on the source of radiation and explode when they got near.
The cluster bombs can be used to ensure that after the ARM disables the SAM system's radar, the command post, missile launchers etc. are also destroyed to make sure the SAM site stays down.
http://www.launchbase.net/encyclopedia/Anti-radiation_missile   (603 words)

  
 Radiation - Web Server Tools and CGI Software for Webmasters
Radiation.com gives you the ideas and solutions to make your website more interactive.
Previously registered users may still access our Online Support system for their registered products by providing their Radiation User ID. Freeware products are not eligible for technical support requests.
Users who previously purchased a commercial Radiation product can still find our user guides and product information pages in our Archived Products section of this site.
http://www.radiation.com   (191 words)

  
 Health Protection Agency Radiation Protection Division
Material previously available on the NRPB web site may be accessed here, including for the Advisory Group on Non-ionising Radiation (AGNIR) and the Advisory Group on Ionising Radiation (AGIR).
Animated guide to protecting your body from the sun.
Part of the Centre for Radiation, Chemical and Environmental Hazards, the Division carries out the Health Protection Agency’s work on ionising and non-ionising radiations.
http://www.hpa.org.uk/radiation   (238 words)

  
 Lesson coverpage and index
This is a self paced lesson on the basics of radiation and radioactivity.
Comments, corrections or ideas can be sent to theWebmaster.
Page 11: Measurement of Radiation, Sodium Iodide Detector
http://www.physics.isu.edu/radinf/cover.htm   (53 words)

  
 rrsOnline
Corporate and Institutional Members of the Radiation Research Society
The official web site of the Radiation Research Society
53rd Annual Meeting of the Radiation Research Society
http://www.radres.org   (66 words)

  
 NOAA Home Page - Radiation
This data is frequently used to study global climate change.
NOAA's Air Resources Lab is now operating a national radiation monitoring program that builds upon and takes over from earlier NOAA networks monitoring components of solar radiation across the continental U.S.A. Radiation Info
• Solar and Thermal Atmospheric Radiation (STAR) Group, NOAA's Climate Monitoring and Diagnostics Laboratory (CMDL)
http://www.noaa.gov/radiation.html   (126 words)

  
 Microwave News: Home Page
Nordic Radiation Agencies: No Mobile Phone Health Risks
http://www.microwavenews.com   (357 words)

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