Current Radiation Dose News and Events

Current Radiation Dose News and Events, Radiation Dose News Articles.
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Beta blockers can repair malformed blood vessels in the brain
Propranolol, a drug that is efficacious against infantile haemangiomas (''strawberry naevi'', resembling birthmarks), can also be used to treat cerebral cavernous malformations, a condition characterised by misshapen blood vessels in the brain and elsewhere. This has been shown by researchers at Uppsala University in a new study published in the scientific journal Stroke. (2021-02-23)

High energy radiotherapy could 'paint' tumours to avoid harming healthy tissue
A radiotherapy technique which 'paints' tumours by targeting them precisely, and avoiding healthy tissue, has been devised in research led by the University of Strathclyde. (2021-02-23)

Life from Earth could temporarily survive on Mars
German Aerospace Center scientists. The researchers launched these small lifeforms into Earth's stratosphere, which replicates key characteristics of the Martian environment, and found that some microorganisms, in particular spores of black mold, survived the trip. This new way of testing endurance to space travel will be invaluable for understanding the threats and opportunities of microbes in future missions to Mars. (2021-02-22)

The Lancet: 3-month interval between first and second dose of Oxford COVID-19 vaccine results in higher vaccine efficacy than 6-week interval
* Exploratory analyses including 17,178 participants find that higher vaccine efficacy is obtained with a longer interval between the first and second standard dose (81% for 3-month interval vs 55% for up to 6-week interval). In addition, a single dose of vaccine is highly efficacious in the first 3 months (76% efficacy from 22 days after vaccination onwards). (2021-02-19)

Human impact on solar radiation levels for decades
Based on the long-term Potsdam radiation time series, ETH Professor Martin Wild and his collaborators have shown that variations in the intensity of sunlight over decades are down to ultra-fine, man-made dirt particles in the atmosphere. (2021-02-18)

3D-printing perovskites on graphene makes next-gen X-ray detectors
By using 3D aerosol jet-printing to put perovskites on graphene, scientists at EPFL have made X-ray detectors with record sensitivity that can greatly improve the efficiency and reduce the cost and health hazard of medical imaging devices. (2021-02-17)

Proton therapy induces biologic response to attack treatment-resistant cancers
Mayo Clinic researchers have developed a novel proton therapy technique to more specifically target cancer cells that resist other forms of treatment. The technique is called LEAP, an acronym for 'biologically enhanced particle therapy.' The findings are published today in Cancer Research, the journal of the American Association for Cancer Research. (2021-02-17)

Radioactive bone cement found to be safer in treating spinal tumors
A radioactive bone cement that's injected into bone to provide support and local irradiation is proving to be a safer alternative to conventional radiation therapy for bone tumors, according to a study led by University of California, Irvine researchers. (2021-02-16)

New hope for treating chronic pain without opioids
According to some estimates, chronic pain affects up to 40% of Americans, and treating it frustrates both clinicians and patients--a frustration that's often compounded by a hesitation to prescribe opioids for pain. (2021-02-15)

Research highlights ways to protect astronaut cardiovascular health from space radiation
In the inky blackness of space an invisible threat is ever present - radiation. It can have a huge array of negative effects on astronaut health, including cardiovascular disease. However, if we are ever to journey to the red planet, we will need to understand and reduce this risk. A new review charts a course through what we know about the cardiovascular risks of space radiation, and the best ways to protect space travelers. (2021-02-12)

T cells depressed
In chronic infections, the immune system can become exhausted. Ludwig-Maximilians-Universitaet (LMU) in Munich researchers have looked into how this works. (2021-02-12)

Genomic test helps estimate risk of prostate cancer metastasis, death
A commercially available genomic test may help oncologists better determine which patients with recurrent prostate cancer may benefit from hormone therapy, according to new research from the Johns Hopkins Kimmel Cancer Center and 15 other medical centers. (2021-02-11)

One dose of COVID-19 vaccine provokes strong immune response in those previously infected
Researchers report preliminary evidence that people previously infected with COVID-19 responded very strongly to one dose of the Pfizer vaccine, regardless of when they were infected and whether or not they had detectable antibodies against COVID-19 prior to receiving the vaccine. The response was so effective that it opens the debate as to whether one dose of the vaccine may suffice. The research also provided evidence that immune response was similar across multi-ethnic groups. (2021-02-11)

Black carbon aerosols in Beijing become "slim"
Scientists observed evident decreases of black carbon aerosol (BC) loading in the atmosphere of urban Beijing since the implementation of China's Action Plan of Prevention and Control of Air Pollution in 2013. And the BC aerosols became ''slim'', appearing with smaller core sizes and less coatings. (2021-02-10)

Radiation vulnerability
Exposure to radiation can wreak indiscriminate havoc on cells, tissues, and organs. Curiously, however, some tissues are more vulnerable to radiation damage than others. A new study now finds that cellular survival after radiation exposure depends on behavior of the tumor-suppressor protein p53 over time. In vulnerable tissues, p53 levels go up and remain high, leading to cell death. In tissues that tend to survive radiation damage, p53 levels oscillate up and down. (2021-02-09)

Combination therapy with radiation shows promise in treating glioblastoma
In a study of mice, researchers at the UCLA Jonsson Comprehensive Cancer Center have identified a new approach that combines an anti-psychotic drug, a statin used to lower high cholesterol levels, and radiation to improve the overall survival in mice with glioblastoma (2021-02-09)

Findings of study comparing analgesics in acute post-trauma pain
The combination of a high?dose NSAID with paracetamol does not increase the analgesic effect compared to paracetamol alone. Researchers also found that paracetamol alone is superior to high?dose NSAID alone for posttraumatic extremity pain. (2021-02-08)

Scientists measure spectral line of Cherenkov radiation in radiant regime
The scientists of Tomsk Polytechnic University jointly with the colleagues from Keysight company have conducted an experiment with an electron beam at the TPU microtron to study a super-radiant regime that occurs when radiation is generated by a train of electron bunches. The research findings obtained by a high-precision measurement of a spectral line width proved that about 8,000 electron bunches in a super-radiant regime form monochromatic Cherenkov radiation. This experiment was conducted for the first time. (2021-02-07)

Ural Federal University scientists developed a new way of synthesis of high-purity zircon
A research group from Ural Federal University synthesized high-purity single-phase zircon (ZrSiO4) and analyzed its structural, thermal, vibrational and optical properties. The results have been published in the Journal of Solid State Chemistry (Q2) (2021-02-05)

Grape consumption may protect against UV damage to skin
A recent human study published in the Journal of the American Academy of Dermatology found that consuming grapes protected against ultraviolet (UV) skin damage. Study subjects showed increased resistance to sunburn and a reduction in markers of UV damage at the cellular level. Natural components found in grapes known as polyphenols are thought to be responsible for these beneficial effects. (2021-02-05)

Dartmouth-invented technology allows doctors to see beam field during radiation treatment
With the use of the BeamSite Cherenkov imaging camera system invented by DoseOptics, LLC., radiation oncologists at Dartmouth's and Dartmouth-Hitchcock's Norris Cotton Cancer Center can capture real-time external beam delivery images during cancer patients' standard radiation therapy sessions. These images are used to verify that the beam is targeting the exact area intended, and make necessary adjustments to prevent unintentional exposure to patients. (2021-02-04)

Model predicts likelihood of persistent high-dose opioid use after knee surgery
A new study published in Arthritis Care & Research has identified 10 readily available clinical factors that may predict which patients will persistently use high doses of opioids in the year following knee replacement surgery. (2021-02-03)

BU study: New vaginal film, MB66, is safe
Researchers at Boston University School of Medicine (BUSM), Alpert Medical School of Brown University and Mapp Biopharmaceutical have now found that MB66, a vaginal film product containing monoclonal antibodies against human immunodeficiency virus-type 1 (HIV-1) and herpes simplex viruses types 1 and 2 (HSV-1 and 2), is safe and effective. (2021-02-03)

Providing inclusive care for LGBTQ2SPIA+ cancer patients
In an upcoming issue of the Journal of Medical Imaging and Radiation Sciences, published by Elsevier, undergraduate researchers from the University of Alberta's Radiation Therapy Program in the Faculty of Medicine and Dentistry describe how LGBTQ2SPIA+ patients face unique cancer risks, including fear of discrimination, higher incidence of certain cancer sites, and lower screening rates, resulting in more cancers detected at later stages. (2021-02-02)

New realm of personalized medicine with brain stimulation
Millions of patients suffering from neurological and mental disorders such as depression, addiction, and chronic pain are treatment-resistant. New research paves the way for a promising alternative: personalized deep brain stimulation. Researchers have found a way to predict what effect electrical stimulation will have on an individual's brain activity across multiple brain regions. The work represents a major step forward in achieving new therapies for a whole host of neurological and mental disorders. (2021-02-01)

A potentially safer, more effective gene therapy vector for blood disorders
Researchers at Children's Hospital of Philadelphia (CHOP) have developed a gene therapy vector for blood disorders like sickle cell disease and beta-thalassemia that is potentially safer and more effective than those currently used in gene therapy trials for those conditions. The vector, an engineered vehicle for delivering functional copies of the hemoglobin gene to correct a genetic abnormality, leads to the production of more hemoglobin with a lower dose, minimizing the risk of toxic side effects. (2021-01-29)

Reduced-dose RT with Cisplatin improves outcomes for HPV-associated oropharyngeal carcinoma
A combination of reduced-dose radiotherapy using intensity-modulated radiotherapy (IMRT) combined with concurrent cisplatin met the threshold for disease control and quality of life compared to the standard of care for good-risk patients with HPV-associated oropharyngeal squamous cell carcinoma on the NRG Oncology clinical trial NRG-HN002. (2021-01-29)

Radiation Oncology trials using PET with FDG uptake among NSCLC patients
Two radiation oncology trials presented at the IALSC World Conference on Lung Cancer Singapore highlight how some researchers are exploring use of higher radiation boost doses to only PET-positive regions in locally-advanced non-small cell lung cancer (NSCLC). A previous large RTOG phase III trial revealed that the unform delivery of a high dose to the entire tumor led to poorer survival. (2021-01-29)

Rates of skin cancer have increased dramatically over recent decades
Incidence rates of skin cancer (cutaneous malignant melanoma) have increased more than 550% in males and 250% in females since the early 1980s in England - according to a new study by Brighton and Sussex Medical School (BSMS). (2021-01-26)

Better bundled: new principle for generating X-rays
X-rays are usually difficult to direct and guide. X-ray physicists at the University of Göttingen have developed a new method with which the X-rays can be emitted more precisely in one direction. To do this, the scientists use a structure of thin layers of materials with different densities of electrons to simultaneously deflect and focus the generated beams. The results of the study were published in the journal Science Advances. (2021-01-25)

Study finds shorter radiation regimen safe, effective for men with advanced prostate cancer
UCLA researchers found shortening a traditional 45-day course of radiation to a five-day course delivered in larger doses is safe and as effective as conventional radiation for men with high-risk forms of prostate cancer. (2021-01-25)

How does incident solar radiation affect urban canyons?
Toyohashi University of Technology proposed a numerical bead model to predict the upward-to-downward reflection ratio of glass bead retro-reflective (RR) material purposed for urban heat island (UHI) mitigation and reducing energy consumption. These results will contribute to existing research on the absorption or reflection of solar radiation to improve urban thermal and lighting conditions, and to reduce building energy consumption. (2021-01-25)

University of Cincinnati research unveils possible new combo therapy for head and neck cancer
Researchers at the University of Cincinnati have tested a new combination therapy in animal models to see if they could find a way to make an already effective treatment even better. Since they're using a Food and Drug Administration-approved drug to do it, this could help people sooner than later. (2021-01-22)

Antibiotics combinations used regularly worldwide--but 80% of these not recommended by WHO
Fixed dose combinations of antibiotics are consumed in huge quantities globally, but 80 percent of combinations are not on the WHO Essential Medicines List, and 92 percent are not FDA-approved, - with inappropriate combinations risking inefficacy, toxicity, and selection for antimicrobial resistance. (2021-01-20)

Sunbathing after menopause may be harmful
UV-radiation can affect hormone levels of postmenopausal women negatively and this may contribute to several health issues, according to new research from Kai Triebner, University of Bergen, and colleagues. (2021-01-20)

Incentivizing vaccine adherence: could it be the key to achieving herd immunity?
To achieve success, experts estimate that at least 70 to 90 percent of the population must be inoculated with a COVID-19 vaccine to achieve herd immunity, but how can we ensure folks will voluntarily receive a vaccine? An examination of scientific evidence on incentivizing vaccine adherence found that modest financial incentives resulted in as much as a 7-fold increase in adherence compared to no incentives. (2021-01-20)

Dartmouth researchers pilot FLASH radiotherapy beam development for treatment of cancer
A team of researchers led by Dartmouth's and Dartmouth-Hitchcock's Norris Cotton Cancer Center has produced a 'FLASH' ultra-high-dose rate radiation therapy beam, demonstrating that such a beam can be achieved reversibly on a clinical linear accelerator and delivered to the patient treatment site. FLASH beam radiotherapy improves patient safety by protecting normal tissues from excess damage while still having the same treatment effect on tumor tissues. (2021-01-19)

5G doesn't cause COVID-19, but the rumor it does spread like a virus
Research team investigated how COVID-19 misinformation proliferated using the same epidemiological techniques for modeling disease transmission. (2021-01-19)

Weaker skin barrier leads to faster uptake of chemicals
The ability of our skin to protect us from chemicals is something we inherit. Some people are less well-protected which could imply an increased risk of being afflicted by skin disease or cancer. A new study from Karolinska Institutet in Sweden that has been published in Environmental Health Perspectives shows how the rate of uptake of common chemicals is faster in people with a genetically weakened skin barrier. (2021-01-13)

New hard disk write head analytical technology can increase hard disk capacities
Using synchrotron radiation at SPring-8 - a large-scale synchrotron radiation facility - Tohoku University, Toshiba Corporation, and the Japan Synchrotron Radiation Research Institute (JASRI) have successfully imaged the magnetization dynamics of a hard disk drive (HDD) write head for the first time, with a precision of one ten-billionth of a second. The method makes possible precise analysis of write head operations, accelerating the development of the next-generation write heads and further increasing HDD capacity. (2021-01-07)

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