Sentences with phrase «radiation dose levels»

After the government evacuated more than 100,000 people living within 20 kilometres of the stricken power plant, it said they should be allowed to return to their homes when radiation dose levels fell below 20 millisieverts a year.

«It is important for healthcare professionals (including referring physicians, radiologists, and technologists) to be aware of radiation dose levels and risks from imaging tests for several reasons, including the ability to weigh the risks and benefits of tests, counsel patients on relevant risks, optimize protocols to minimize radiation dose, and select appropriate protocols to minimize radiation dose.»

Not exact matches

Researchers blasted rats with full - body doses of RF radiation (mostly at higher levels than those associated with cell phones) from the time they were born until they were two years old for nine hours a day.

But scientists still don't know how the human body will react to sustained low - level doses of radiation inherent in space travel.

The monkeys were given lethal doses of 5.8, 6.5 or 7.2 grays of whole - body radiation, similar to levels inhaled by Fukushima workers (all the animals received «lethal» doses, but only some resulted in death).

The detector developed at UNH, known as DoSEN, short for Dose Spectra from Energetic Particles and Neutrons, measures and calculates the absorbed dose in matter and tissue resulting from the exposure to indirect and direct ionizing radiation, which can change cells at the atomic level and lead to irreparable damDose Spectra from Energetic Particles and Neutrons, measures and calculates the absorbed dose in matter and tissue resulting from the exposure to indirect and direct ionizing radiation, which can change cells at the atomic level and lead to irreparable damdose in matter and tissue resulting from the exposure to indirect and direct ionizing radiation, which can change cells at the atomic level and lead to irreparable damage.

Levels detected in a short duration pulse at the plant itself have reached as high as 8,217 microSieverts per hour, or eight times the dose endured in a typical CT scan and four times the normal dose of background radiation in a year.

On the moon, they will have to move quickly — the radiation will hit within an hour of their learning of it, and doses could build up to an unacceptable level in three to four hours.

Due to the meltdown in that reactor, radiation levels are too high for any human to enter without receiving an unacceptable dose.

As part of the Building a Better Explainer project at N.Y.U.'s Studio 20, we decided to create a visual explainer of radiation levels, inspired by some recent presentations over at XKCD and Information is Beautiful.Both compare radiation doses from everyday activities (like eating a banana or flying across the country) to doses near the Fukushima plant, as well as other disasters like Chernobyl.

They found that using the VASH collimator with an existing breast molecular imaging system, they could get six times better contrast of tumors in the breast, which could potentially reduce the radiation dose to the patient by half from the current levels, while maintaining the same or better image quality.

On Mars, however, the researchers calculate that dormant bugs could receive the necessary dose in just a few hundred thousand years, because radiation levels there are much higher.

Steve Wing, an epidemiologist from the University of North Carolina, Chapel Hill, points out that even the low levels of radiation that remain in the environment could be significant in the long run «because so many more people are exposed, even though the dose per person decreases farther from the plant.»

The response was proportional to radiation dose, and in the most contaminated regions, the leaf loss was 40 percent less than in control regions in Ukraine with normal background radiation levels.

The total radiation delivered, 0.5 gray (Gy), was high relative to environmental levels (from sources such as naturally occurring radon in rock), but significantly lower than equivalent human doses experienced in CAT - scans or cancer therapy.

When they plotted the number of tracks against the dose of radioactive Cesium experienced in different parts of the reserve, the researchers found that radiation levels aren't correlated with animal abundance.

The distributions of annual external doses estimated for each region overlap with each other, demonstrating that the personal external individual doses in locations where residence is currently allowed in Fukushima Prefecture and in Belarus are well within the range of estimated annual doses due to the background radiation level of other regions / countries.

The optimal treatment protocols (doses, frequency) and the level of benefit offered by radiation therapy require further study.

The BEIR VII or seventh Biological Effects of Ionizing Radiation report on «Health Risks from Exposure to Low Levels of Ionizing Radiation» reconfirmed the previous knowledge that there is no safe level of exposure to radiation — that even very low doses can cause cancer.

Some people will get a dose of radiation at a level that would increase the risk of cancer in 25 years, and a few might suffer radiation poisoning, which at high doses can be fatal.