Sentences with phrase «dose radiation exposure»

This system is the most advanced digital x-ray system available offering the benefits of a lower dose radiation exposure and less repeat x-rays for quicker answers.

This along with our utilization of the last technology, which includes: digital radiography (DR system using low dose radiation exposure), ultrasound, full in - house laboratory, endoscope, surgical laser, and cold laser therapy, allows our doctors and staff to provide top - tier patient care.

His research concentrates on the long - term biological effects of low - dose radiation exposure.

There were only modest acute changes in cardiac biomarkers and electrocardiograms and there were no clinically significant cardiac events in patients with high - dose radiation exposure to the heart following thoracic radiation therapy (RT) and short - term follow - up.

This challenge to the established LNT model and raises questions on some of the basic assumptions used to assess the risk of low dose radiation exposures.

Not exact matches

The effects of extended exposure to radiation, however low the dose, were still unknown.

Even in small doses, exposure to radiation is problematic for a developing baby and mom.

Experts at the Environmental Protection Agency estimated that the dose of radiation that reached the western United States was equivalent to 1/100, 000 the exposure one would get from a round - trip international flight.

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.

Chesser says some of his group's studies of mice exposed to radioactivity around Chernobyl hint at hormesis: Small exposures over 10 to 45 days, they found, appeared to temper damage from an acute radiation dose delivered in the lab later.

Johns Hopkins scientists report that rats exposed to high - energy particles, simulating conditions astronauts would face on a long - term deep space mission, show lapses in attention and slower reaction times, even when the radiation exposure is in extremely low dose ranges.

Those results were combined with a measure of exposure to natural doses of radiation in the tooth.

Although many say the report is well done, the exercise largely depended on modeling of radiation doses rather than on direct measurements of population exposures, and the data were often sub-optimal.

MICE can survive a dose of radiation that should have killed them when given a double - drug therapy — even if they get the drug cocktail 24 hours after exposure.

«The lotus is so robust that it can sprout after centuries of exposure to low - dose gamma radiation,» Shen - Miller observes.

«Chronic exposure to low - dose radiation at Chernobyl favors adaptation to oxidative stress,» is published in Functional Ecology on Friday 25 April 2014.

There is no known way to prevent most types of leukemia, though some types may be prevented by avoiding high doses of ionizing radiation, exposure to the chemical benzene, smoking and certain types of chemotherapy.

Marine scientists have calculated that, based on all the radioactive particles released (or leaking) from Fukushima, a dose due to this most recent nuclear accident would add up to a total of roughly one microsievert (a unit of radiation exposure) of extra radiation — roughly one tenth the average daily dose most Americans experience, one fortieth the amount from a cross — North America flight and one one - hundredth the exposure from a dental x-ray.

Studies have shown that the risk of heart disease is higher in this group of women after radiation treatment because it can be difficult to ensure that a sufficient dose of radiation is delivered to the left breast while adequately shielding the heart from exposure.

«New cellular response to radiation exposure: Must we reconsider the risks of low doses?.»

Biophysical studies have shown that the damage arising to cells from an exposure to ionizing radiation declines in a linearly manner with decreasing dose, with some damage still occurring even at the lowest doses.

This linear no - threshold (LNT) dose - response relationship has been used to extrapolate the risks of low doses of radiation from epidemiological studies that were done following exposure to much higher doses of radiation (e.g. survivors of the atomic bombings).

Orthopaedic surgery and radiology collaborators have also implemented intraoperative use of low - dose protocols on fluoroscopy machines, which reduces radiation exposure to both patients as well as physicians and staff in the operating room.

Biologists have generally assumed that the damage will be proportional to the dose, but in vitro studies have shown that cells can repair modest DNA damage caused by radiation — and that low - dose radiation might even protect the cell against future exposure.

We found that cancer susceptibility is related to the complex interplay between exposure to low - dose radiation, an individual mouse's genes, and their tumor microenvironment,» says Jian - Hua Mao of Berkeley Lab's Life Sciences Division.

However, volunteers received only a single dose of mirabegron, since PET / CT scanning involves exposure to a small amount of radiation.

Phosphorylated ERK1 / 2 and p - AKT were increased in a dose - dependent manner upon exposure to 1.0, 2.0 and 3.0 Gy of radiation at 4 h of post-irradiation (P < 0.01 to 0.0001).

Studies have shown that exposure of tumor cells to therapeutic doses of radiation activates cell survival signaling pathways such as EGFR - RAS [2 - 5] and its downstream molecules such as ERK1 / 2, PI3K - AKT, JNK, etc. apart from several other signaling molecules [4, 6, 7].

Exposure of tumor cells to clinically relevant low doses of ionizing radiation causes DNA damage and the generation of reactive oxygen species (ROS).

Thus apart from direct cytotoxic effect, the exposure of cancer cells to therapeutic doses of radiation also enhances the survival and proliferation of a fraction of cells which ultimately leads to radiation resistance and therapeutic inefficacy.

When these foods are consumed, a person receives much of this dose internally, often a more severe pathway to receive radiation than by external exposure.

Comparison of radiation exposure dose, CT image quality and PET SUV according to pitch (Table speed) in PET / CT using AEC (Auto Exposure Cexposure dose, CT image quality and PET SUV according to pitch (Table speed) in PET / CT using AEC (Auto Exposure CExposure Control).

Today, radiation exposure could come from CT scans or high - dose radiation to treat lymphoma or even from radon gas, which is why it's so important to test for radon.

Radiation Dose Chart — this is a very informative chart of the ionizing radiation dose a person can absorb from various sources in relation to direct exposDose Chart — this is a very informative chart of the ionizing radiation dose a person can absorb from various sources in relation to direct exposdose a person can absorb from various sources in relation to direct exposure.

The World Health Organization (WHO) estimates that the typical absorbed dose of mercury from amalgams is one to twenty - two micrograms per day, with most values in the range of one to five micrograms per day.16 Various factors, including gum chewing and bruxism, can increase these exposures to an upper range of about one hundred micrograms per day.7 Preliminary evidence also suggests that certain types of electromagnetic radiation, including EMR from mobile phones and from magnetic resonance imaging (MRI) may increase the release of mercury vapor from dental amalgams.17

With advanced treatment - planning software and a board - certified radiation oncologist, our cancer patients benefit from customized treatment plans and sub-millimeter precision that enable the delivery of high - dose radiation directly to the tumor with minimum radiation exposure to the surrounding healthy anatomy.

«The committee concludes that current scientific evidence is consistent with the hypothesis that there is a linear, no - threshold dose - response relationship between exposure to ionizing radiation and the development of cancer in humans.»

The additional exposures received by most Japanese people in the first year and subsequent years due to the radioactive releases from the accident are less than the doses received from natural background radiation (which is about 2.1 mSv per year).

Furthermore, background radiation in the US is now dominated by human exposures, so any hypothetical minimum in the dose response curve set by evolution has been passed for many people.

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 causeExposure 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 causeexposure to radiation — that even very low doses can cause cancer.

The Low Dose Radiation Research Act of 2015 directs the two organisations to carry out a research program «to enhance the scientific understanding of and reduce uncertainties associated with the effects of exposure to low dose radiation in order to inform improved risk management methods.&raDose Radiation Research Act of 2015 directs the two organisations to carry out a research program «to enhance the scientific understanding of and reduce uncertainties associated with the effects of exposure to low dose radiation in order to inform improved risk management methods.&radose radiation in order to inform improved risk management methods.»