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Latest Ionizing radiation Stories

2013-05-02 23:19:48

Dade Moeller Senior Health Physicist Edward F. Maher has been appointed to the National Academy of Sciences´ new Committee on Research Directions in Human Biological Effects of Low Level Ionizing Radiation. Richland, WA (PRWEB) May 02, 2013 Dade Moeller Senior Health Physicist Edward F. Maher has been appointed to the National Academy of Sciences´ new Committee on Research Directions in Human Biological Effects of Low Level Ionizing Radiation. The committee´s first meeting is...

2013-05-01 23:02:58

Over the weekend, the campaign for National Kids Safe Week has launched. One of often neglected health issues is exposure to EMF radiation among children. (PRWEB) May 01, 2013 Over the weekend, the campaign for National Kids Safe Week has launched. One of often neglected health issues is exposure to EMF radiation among children. Children´s foundations and healthcare organizations like Kaiser Permanente are leading this campaign towards promoting a safer environment for children....

2013-04-19 17:43:06

The American Society for Radiation Oncology (ASTRO) has issued a new white paper, “Assuring Safety and Quality in Image Guided Delivery of Radiation Therapy,” that recommends best practices to improve the safety and effectiveness of image guided radiation therapy (IGRT), according to the manuscript published as an article in press online in Practical Radiation Oncology (PRO), the official clinical practice journal of ASTRO. The executive summary and supplemental material are...

2013-04-17 15:41:23

The estimated size of chest lymph nodes and lung nodules seen on CT images varies significantly when the same nodes or nodules are examined using lower versus higher doses of radiation, a new study shows. The size of lymph nodes and lung nodules is an important determinant of treatment and treatment success. The study, conducted at Massachusetts General Hospital in Boston, used a 3D image processing tool to quantitatively measure the volume of the lymph nodes and lung nodules. "We found...

2013-04-17 15:20:28

Radiation dose reduction has moved to the forefront of importance in medical imaging with new techniques being developed in an effort to bring doses down as low as possible. What difference can these techniques make? Researchers at Indiana University School of Medicine aimed to find out. "We conducted a study to quantify dose reduction, comparing two years' worth of data and 11,458 abdomen and pelvic CT exams," said Dr. Jonas Rydberg, lead author of the study. Data on 5,707 consecutive CT...

2013-04-15 10:56:40

An algorithm that takes the patient's size into consideration can cut radiation dose by 41% in lumbar spine CT without compromising the diagnostic quality of the images, a new study shows. Researchers at Yeouido St. Mary's Hospital in Seoul, Korea examined 107 patients using semi-automated attenuation-based tube potential selection which optimized tube potential at 100 kilovoltage, rather than the standard 120 kilovoltage. Decreasing the kilovoltage decreased the radiation dose from a mean...


Latest Ionizing radiation Reference Libraries

Incoming Solar Radiation Impacts By Various Weather Cycles
2012-08-22 13:30:39

The above image looks at the month of March for the three cycles known as Normal Phase, El-Nino, and La-Nina. The data was recorded for the city of Honolulu Hawaii, during the month of March. Remember this is just data for one month during these cycles. Normal: During this cycle incoming solar activity was upwards to 48% efficient for the month, producing less than 50% of the month which is due to the large amount of daily cloud cover that is seen on the island during the early morning and...

Incoming Solar Radiation Impacts By Various Weather Cycles
2012-07-23 11:19:47

The above image looks at the month of March for the three cycles known as Normal Phase, El-Nino, and La-Nina. The data was recorded for the city of Austin Texas. Remember this is just data for one month during these cycles. Normal: During this cycle incoming solar activity was upwards to 60% efficient for the month, producing enough solar energy that only 40% of the month would have not had strong incoming radiation. EL-Nino: This phase provided the area with an extended number of...

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2004-10-19 04:45:41

Electromagnetic Spectrum -- The electromagnetic spectrum describes the various types of electromagnetic radiation based on their wavelengths. Radio, representing wavelengths from a few feet to well over a mile, is at one end of the spectrum. Gamma ray radiation is at the other end: the wavelength of the harder types is so short, in the subatomic range, that we do not have instruments capable of directly measuring it. While the above classification scheme is generally accurate, in...

6_c9b95f985acbe749f13bf6301a3180a84
2004-10-19 04:45:41

Electromagnetic Radiation -- Electromagnetic radiation is a combination of oscillating electric and magnetic fields propagating through space and carrying energy from one place to another. Light is a form of electromagnetic radiation. The theoretical study of electromagnetic radiation is called electrodynamics, a subfield of electromagnetism. When any wire (or other conducting object such as an antenna) conducts alternating current, electromagnetic radiation is propagated at the same...

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2004-10-19 04:45:41

Solar Radiation -- Solar radiation is radiant energy emitted by the sun due to nuclear fusion reactions. Fusion is the process whereby stars produce huge quantities of energy from the fusion of hydrogen or helium, in one of the most efficient processes of energy generation. The radiation referred to is usually electromagnetic energy, particularly infrared radiation, visible light, and ultraviolet. Some stars are known to emit radiation of other wavelengths. Solar neutrinos are a...

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Word of the Day
humgruffin
  • A terrible or repulsive person.
Regarding the etymology of 'humgruffin,' the OED says (rather unhelpfully) that it's a 'made-up word.' We might guess that 'hum' comes from 'humbug' or possibly 'hum' meaning 'a disagreeable smell,' while 'gruffin' could be a combination of 'gruff' and 'griffin.'