Ray and radiation. Medical search. Frequent questions

Radiation shielding and lead clothing is used to reduce their dose. (uib.no)
The aim of this study is to evaluate the feasibility of using MC simulations through FLUKA to calculate and evaluate the dose given to the interventional cardiologists (operator) for different radiation shielding. (uib.no)
The different radiation shielding had a definitive impact on the dose given to the operator according to the simulations. (uib.no)
A significant reduction of the dose was also observed when placing a lead blanket over the patient's body, outside the radiation field. (uib.no)
From a microbiological point of view, the equivalence of gamma, E-beam and X-ray has been assessed with the conclusion that "dose is dose" and that a validated kill dose from any ionizing radiation source will provide equivalent kill at the equivalent dose. (qosina.com)
Also, radiation dose arising from the medical uses has increased as new technologies have been developed. (radiationsafety.ca)
Depending upon the region of the body and the resolution of the scan, the number of images taken can range from 10s to a thousand x-rays, significantly increasing the radiation dose to the patient compared to a single x-ray. (radiationsafety.ca)
Statistical methods are then utilized to calculate the optimal radiation dose and tomographer configuration. (medimaging.net)
In general, this equipment will be suitable for either the assessment of the radiation dose received by the individual or the routine assessment of radiation levels in the working environments or areas. (npl.co.uk)
The percentages of people with each kind of thyroid disease or with ultrasound abnormalities were about the same regardless of their estimated radiation dose from Hanford's iodine-131. (cdc.gov)
The study found no evidence that the risk of hyperparathyroidism increased with increasing radiation dose. (cdc.gov)
However, the study did detect a statistically significant relationship between radiation dose and decreasing calcium levels. (cdc.gov)
The proportion of participants with thyroid abnormalities that could be seen on their ultrasound examinations did not increase significantly with increasing radiation dose ( see Figure 4 ). (cdc.gov)
Specific testing abilities range from determining the effects of atmospheric neutrons on commercial avionics systems to assessing total ionizing dose and single-event effects of cosmic rays and natural space radiation on electronics. (boeing.com)
Every day we are exposed to levels of radiation naturally in the environment, and dental x-rays only make up a small fraction of the average daily dose of radiation each day. (r2brokenarrow.com)
The presence of PE, image quality parameters [contrast attenuation, contrast-to-noise ratio (CNR) and signal-to-noise ratio (SNR)] and effective radiation dose (mSv) were assessed. (nih.gov)
The estimated effective radiation dose was significantly lower in group A (1.1 ± 0.7 mSv) than in group B (2.7 ± 1.2 mSv). (nih.gov)
OBJECTIVES: To examine mortality patterns and dose-response relations between ionising radiation and mortality outcomes of a priori interest in 6409 uranium workers employed for at least 30 days (1951-1985), and followed through 2004. (cdc.gov)
The association between non-malignant respiratory disease and radiation dose observed in previous studies was not apparent, possibly due to improved exposure assessment, different outcome groupings, and extended follow-up. (cdc.gov)
Par exemple, seuls 6,1 % des répondants étaient capables de décrire le principe ALARA et 98,2 % ignoraient qu'il n'existait pas de seuil en dessous duquel une dose est sans danger, selon les recommandations internationales. (who.int)

The regular testing of appropriate monitoring equipment applies to alpha-, beta-, photon- and neutron radiations. (npl.co.uk)

What is the theoretical limit on the energies of gamma-ray photons? (astronomy.com)
The acquired information has the form of a 3D matrix containing the number of X-ray photons registered by individual volume elements - voxels. (psi.ch)
This radiation line sensor simultaneously measures the number of radiation photons in 5 different energy regions to acquire their images. (hamamatsu.com)
Direct flat-panel detectors (FPDs) convert x-ray photons directly into an electrical charge, which is read out by a thin film transistor array, active matrix array, electrometer probe, or microplasma line. (medscape.com)

Various government and private organizations, such as Health Canada, the National Council on Radiation Protection & Measurements (NCRP), and the Australian Radiation Protection and Nuclear Safety Agency (ARPANSA), have incorporated guidelines and protocols regarding radiation shielding products. (bharatbook.com)

Here's a handy resource for patients to calculate their radiation exposure to a variety of imaging tests. (kevinmd.com)
That's a question I encounter daily, and thanks to a group of radiology residents at the University of South Carolina, we now have this handy, on-line tool to calculate a patient's radiation exposure for a variety of imaging tests. (kevinmd.com)
Gamma-ray observatories, such as the Very Energetic Radiation Imaging Telescope Array System (VERITAS) and the High-Altitude Water Cherenkov Gamma-Ray Observatory (HAWC), can observe over effective areas as large as a football field by detecting the products of these particle cascades at ground level. (astronomy.com)
We develop and use novel methods for X-ray imaging with the highest possible spatial and temporal resolution. (lu.se)
To this end, we use a wide range of X-ray imaging methods at different synchrotrons, including MAX IV in Lund, X-ray free-electron lasers, including European XFEL, as well as lab source systems. (lu.se)
Traditional X-ray imaging is based on absorption contrast, which has poor contrast for small and weakly absorbing samples. (lu.se)
It's capable of X-ray absorption contrast and phase contrast imaging at a spatial resolution of about 1 micrometer in 2D and 3D. (lu.se)
In our group, we exploit and develop AI algorithms to address specific X-ray imaging problems in 2D, 3D, and 4D (3D+time). (lu.se)
The spatial resolution in traditional X-ray imaging is limited by the quality of the optics. (lu.se)
In coherent X-ray imaging, the diffracted signal from the sample is analyzed using advanced algorithms, which makes it possible to improve the spatial resolution. (lu.se)
We develop methods for coherent X-ray imaging, both in transmission and Bragg geometry, and combine this with electrical measurements. (lu.se)
X-ray imaging is widely used as a diagnostic tool in many medical fields. (uib.no)
This toolkit has been developed to consolidate resources for radiation safety in medical imaging applications into one location. (radiationsafety.ca)
While it is focused on x-ray safety, it also includes information related to radionuclides as they are used as biomarkers or tags in imaging studies which may also include x-ray. (radiationsafety.ca)
These organizations, which are members of the ISRQSA , provide information and support on best practices imaging with respect to radiation safety. (radiationsafety.ca)
The BONN Call to Action is an important initiative because medical uses of radiation typically require the physician to balance the need for imaging with the need to keep doses low, rather than having set regulatory limits. (radiationsafety.ca)
X-ray imaging can be improved by utilising the wave-optical properties to extract images of complementary contrast. (lu.se)
Normal x-ray imaging relies only on attenuation in the sample, but information about phase shift and scattering of the x-rays can be computed when special conditions are fulfilled. (lu.se)
Custom designed C-Arm cover which protects imaging staff from scatter radiation during general radiology imaging. (xraycurtains.com)
Anne Sakdinawat, a SLAC scientist, has been selected to receive a grant to advance her work in producing and using new types of X-ray imaging tools. (stanford.edu)
SLAC's Anne Sakdinawat is among the recipients, for her research "Hybrid Nanoscale X‐ray Imaging: Direct and Computational Imaging with Advanced X‐ray Diffractive Optics. (stanford.edu)
interventional room containing a robotized X-ray imaging device. (crosscountrypolska.pl)
The Alliance for Radiation Safety in Pediatric Imaging: The Step Lightly campaign. (crosscountrypolska.pl)
As breast imaging is mainly a screening modality it is also vitally important to keep radiation doses low (as most women who undergo it are healthy) and that image review is fast and efficient. (lu.se)
The workshop will involve introductory lectures on x-ray fluorescence imaging, followed by discussion in groups on how to plan and execute the perfect experiment. (lu.se)
This is aimed at researchers who are interested in this exciting method, but have little or no experience with X-ray Fluorescence imaging. (lu.se)
One of the outcome aims of the workshop will be to establish further LINXS-based projects on x-ray fluorescence imaging. (lu.se)
Diffraction imaging techniques using synchrotron radiation can reveal small strains down to 10 -4 -10 -5 . (lu.se)

The RSO will review the dosimetry records quarterly for elevated levels of radiation exposure. (utulsa.edu)
If there are elevated levels of radiation exposure, the RSO will investigate. (utulsa.edu)
They are smooth-rolling, easy-maneuvering, and contain the highest levels of radiation protection in the industry. (xraycurtains.com)

When these image detectors are stimulated by light following radiation exposure, they release the energy, and this light is then converted to rows and columns of pixels that represent the various x-ray intensities. (medscape.com)

In the last three decades Synchrotron radiation became an indispensable experimental tool for chemical and structural analysis of nano-scaled properties in solid state physics, chemistry, materials science and life science thereby rendering the explanation of the macroscopic behavior of the materials and systems under investigation. (scirp.org)
G. Goerigk and D. L. Williamson, "Temperature Induced Differences in the Nanostructure of Hot-Wire Deposited Silicon-Germanium Alloys Analyzed by Anomalous Small-Angle X-Ray Scattering," Journal of Applied Physics, Vol. 99, No. 8, 2006, Article ID: 084309. (scirp.org)
G. Goerigk, K. Huber and R. Schweins, "Probing the Extent of the Sr2+ Ion Condensation to Anionic Polyacrylate Coils: A Quantitative Anomalous Small-Angle X-Ray Scattering Study," Journal of Chemical Physics, Vol. 127, No. 15, 2007, pp. 154908-1-154908-8. (scirp.org)
G. Goerigk and N. Mattern, "Spinodal Decomposition in Ni-Nb-Y Metallic Glasses Analyzed by Quantitative Anomalous Small-Angle X-Ray Scattering," Journal of Physics: Conference Series, Vol. 247, 2010, Article ID: 012022. (scirp.org)
This book is aimed at researchers and graduate students in materials science, radiation chemistry and physics, and polymer and other materials processing. (routledge.com)

Metrology, fundamental research and applications in the spectral range of the extreme ultraviolet (EUV) and vacuum ultraviolet (VUV): For 40 years, PTB has been conducting research and measurements using synchrotron radiation as part of collaborations and services for science and industry. (ptb.de)

The Diagnostic Shielding segment accounted for the highest market share in the medical radiation shielding solution market, by type, during the forecast period. (bharatbook.com)
Based on the solution of the segment, the medical radiation shielding market is categorized as Diagnostic Shielding and Radiation Therapy Shielding. (bharatbook.com)
The ALARA principle, commonly known as "As Low As Reasonably Achievable," implies that a patient should receive the most significant diagnostic benefit with minimal radiation exposure. (medimaging.net)
The WVU Radiation Safety Department is now requiring the registration of all analytical and diagnostic radiation producing devices (x-ray) that are currently being utilized by any individual or department at West Virginia University. (wvu.edu)
In order to adequately administer the registration process and maintain an adequate inventory of all analytical and diagnostic devices, Radiation Safety has developed an explicit system to provide a current record of each x-ray producing device registered with Radiation Safety and the WV Radiological Health Program. (wvu.edu)
To determine the image quality and diagnostic performance of an optimized pulmonary computed tomography angiography (CTA) protocol in terms of radiation and contrast volume saving. (nih.gov)

The voxel detector can be used in many particle tracking applications and it has also many advantages in conventional X-ray transmission radiography as well. (psi.ch)
For intra-oral radiography, the angle of emission should be so adjusted that the patient's eyes / thyroid should not come in the primary X-ray beam. (gujaratradiation.com)

its need for significantly less radiation protection in comparison to high energy. (crosscountrypolska.pl)
With the new technology used today x-rays use 90% less radiation exposure and are safe for patients. (r2brokenarrow.com)

The facilities use technology that only emit radiation while the power is on. (qosina.com)
The Lorentz force on the particles acts perpendicular to both the magnetic field lines and the particles' motion through them, creating an acceleration of charged particles that causes them to emit radiation as a result of the acceleration they undergo as they spiral around the lines of the magnetic field. (wikipedia.org)

They must work close to the radiation field during multiple sessions throughout their career, exposing themselves to scatter radiation. (uib.no)
The purpose of the glove is to offer protection from radiation particularly from the "scatter beam" while simultaneously providing a high degree of finger sensitivity through the glove material. (eljayxray.com)
X-ray Curtains for Vet Clinics shield against scatter radiation. (xraycurtains.com)
Guidance on shielding required to protect against scatter radiation in medical clinics. (xraycurtains.com)
Construct custom radiation shielding barriers to protect from high energy x-ray scatter or radioactive materials. (xraycurtains.com)

The system is based on a microfocus X-ray source with a Cu target, a high-resolution detector and a high-precision sample stage. (lu.se)
Radiation Detect]The detector is used to measure X, γ and β rays radiation, it is optimal for measuring small changes in radiation levels, and has high sensitivity for most commonly used nuclides. (dhgate.com)
The result of data processing is not only an assembled image of a transmitted object but also the position of X-ray source relative to detector which is very useful in many applications (e.g robotic CT). (psi.ch)
Hamamatsu Photonics has developed a new radiation line sensor that uses a cadmium telluride detector. (hamamatsu.com)

ABSTRACT Previous studies have shown that physicians tend to underestimate the risks to patients of radiation exposure. (who.int)

By quickly redirecting the radiation to three different measuring stations, the availability for different measuring tasks is significantly increased. (ptb.de)
Our Brachytherapy Shielding Lap Blanket is designed to significantly reduce the external radiation resulting from implanted seed radiotherapy. (xraycurtains.com)

Cyclotron radiation is electromagnetic radiation emitted by non-relativistic accelerating charged particles deflected by a magnetic field. (wikipedia.org)
Gamma rays produced by the explosion would ionize atoms in the upper atmosphere and those free electrons would interact with the Earth's magnetic field to produce cyclotron radiation in the form of an electromagnetic pulse (EMP). (wikipedia.org)
Radiation is energy transmitted in the form of waves (electromagnetic or pressure) or particles. (saskatchewan.ca)

X-rays are monitored and regulated to provide the minimum amount of radiation exposure needed to produce the image. (medlineplus.gov)
The amount of radiation exposure from a dental x-ray is equivalent to the amount of radiation a person would be exposed to during a few hours of airplane travel. (tebodental.com)

Growth in MRI shielding products is mainly driven by the Awareness of the potential health risks associated with exposure to ionizing radiation is increasing rapidly among people working in radiation-prone environments. (bharatbook.com)
Generically, gamma irradiation can be described as Ionizing radiation, with two viable replacement technologies. (qosina.com)
X-ray as a source of ionizing radiation compares favorably to Cobalt 60 and E-beam and is now being promoted as the key technology to close the gap. (qosina.com)
Owners of ionizing radiation equipment, including X-ray equipment, are required to provide the Radiation Safety Unit with details of their equipment using the X-ray Registration Form . (saskatchewan.ca)
Ionizing radiation induces compatibilization by free radicals, improving the dispersion and adhesion of blend phases, without using chemical additives and at room temperature. (intechopen.com)
14. Synthesis of inorganic nanoparticles by using ionizing radiation, their characterization, and applications. (routledge.com)
To begin with, dental x-rays use a type of radiation called ionizing radiation, which has enough energy to remove an electron from an atom. (tebodental.com)
However, the amount of ionizing radiation used in dental x-rays is very small, and the risk of harm from this radiation is extremely low. (tebodental.com)
1998. Food preservation using ionizing radiation. (cdc.gov)

Protection of personnel is critical in environments with ionising radiation, and requires the constant monitoring of radiation levels. (npl.co.uk)
From outer space to the front lines, the Boeing Radiation Effects Laboratory (BREL) prepares your product for the harshest environments imaginable. (boeing.com)
In addition to state-of-the-art equipment, BREL has a team of world-class physicists, engineers, and technicians with decades of experience and knowledge in radiation effects environments. (boeing.com)
And by having comprehensive access to some of the world's best irradiators, accelerators, and other test capabilities in a single location, the laboratory is able to conduct cutting-edge simulations of both natural and man-made radiation environments at a competitive cost. (boeing.com)
AttenuTech® was founded with the commitment to provide the best radiation protection in high-risk surgical and Interventional procedure environments. (attenutech.com)
AttenuTech®, is constantly seeking to discover, and implement the best solutions for your protection, and safety in medical environments where radiation exposure is a concern. (attenutech.com)

Sufficient number of lead aprons (0.25 mm lead equivalent) are available for use with dental X-ray equipment. (gujaratradiation.com)
With this, lead aprons are commonly used to protect patients from radiation exposure, which further limits unnecessary risk. (tebodental.com)

Screening the phytotoxicity of micro/nanoplastics through non-targeted metallomics with synchrotron radiation X-ray fluorescence and deep learning: Taking micro/nano polyethylene terephthalate as an example. (bvsalud.org)
Non-targeted metallomics, combining synchrotron radiation X-ray fluorescence (SRXRF) and machine learning , has successfully differentiated cancer patients from healthy individuals. (bvsalud.org)
David has 15+ years experience in X-ray Fluorescence Microscopy and fast efficient scanning and XRF methods. (lu.se)
Chris will give a tutorial introduction on X-ray fluorescence and microscopy, and also discuss some topics like fluorescence tomography (including alignment and self-absorption correction). (lu.se)

The laboratory also offers other services such as instrumentation and test equipment for measuring the electrical parameters of circuits before and after radiation exposure. (boeing.com)
1. Cross-linking of polymers by various radiations: Mechanisms and parameters. (routledge.com)

Kiran specializes in manufacturing some of the world's finest radiology equipment, accessories and radiation protection products. (kiranxray.com)
finest radiology equipment, accessories and radiation protection products. (crosscountrypolska.pl)

Report on search for human radiation experiment records, 1944-1994 (volume 1). (cdc.gov)

Our 0.5mm lead equivalence Xray table shields block scattered radiation while allowing for unobstructed operation of your C-Arm fluoroscope. (xraycurtains.com)

The medical radiation shielding market is projected to reach USD 1.8 Billion by 2028 from USD 1.4 Billion in 2023, at a CAGR of 6.5% during the forecast period. (bharatbook.com)
The North America segment accounted for the highest market share in the medical radiation shielding market, by region, during the forecast period. (bharatbook.com)
Based on the region, the global medical radiation shielding market is categorized into North America, Europe, Asia Pacific, and Rest of the world. (bharatbook.com)
The scope of the report covers detailed information regarding the major factors, such as drivers, restraints, challenges, and opportunities, influencing the growth of the medical radiation shielding market. (bharatbook.com)
Owners, installers and contractors of X-ray facilities are required to design and submit an X-ray shielding plan to the Radiation Safety Unit. (saskatchewan.ca)
The Shielding Manual: Plan approval guidelines for X-ray installation guides owners, installers and contractors in the design and construction of facilities that will house X-ray equipment. (saskatchewan.ca)
Medical X-Ray Radiation Shielding Curtains & Barriers provide the highest level of quality while offering full customization. (xraycurtains.com)
We will work with you to make sure your radiation shielding configuration arrives exactly how you want it, as quickly as possible. (xraycurtains.com)
Installation Kits for mounting Radiation Shielding Curtains. (xraycurtains.com)
Transparent radiation shielding made from a lead-free sheet of acrylic copolymer which contains bismuth to provide X-ray shielding properties comparable to lead. (xraycurtains.com)
Ideal for any radiation shielding application. (marshield.com)

Auroral kilometric radiation (AKR) Bremsstrahlung Beamstrahlung Synchrotron radiation Free electron laser Larmor formula Monreal, Benjamin (Jan 2016). (wikipedia.org)
0.1 MeV) at two temperatures (52 and 95 °C). The changes in the α-quartz phase as a function of these two conditions (temperature and fluence) were studied using X-ray powder diffraction (XRD), Raman spectroscopy, and transmission electron microscopy (TEM), and the results acquired using these complementary techniques are presented in a single place for the first time. (osti.gov)

The high flux of coherent X-ray beams from synchrotron radiation facilities, combined with the nano-focus capabilities developed in recent years, have made it possible to probe nano-crystals. (lu.se)

Structuring the x-ray beam into a 2D beamlet array, as shown in Fig. 1, enables three-modal x-ray micro-computed tomography (μ-CT). (cern.ch)
In our talk, we will report on two different fly scan compatible scanning schemes for x-ray μ-CT with a 2D structured beam (2D beam tracking method), developed to facilitate time-efficient three-modal scans. (cern.ch)
Data from real procedures at the operation room was attained to recreate a realistic energy spectrum, beam placement, and spread of the radiation source. (uib.no)
3. Beam geometry determination: The distance and position of the X-ray source is determined from the measured data. (psi.ch)
Gamma, e-beam or x-ray? (qosina.com)
This blog offers valuable insights into gamma, E-beam and X-ray sterilization modalities as well as regulatory considerations. (qosina.com)
Team Nablo set out to compare the effects of gamma irradiation, E-beam and X-ray on a representative medical device to establish equivalency based on functional tests, device discoloration and mechanical testing of select components. (qosina.com)
During a dental x-ray, a small sensor is placed in the mouth, and the x-ray machine is positioned outside the mouth to direct the x-ray beam at the area of interest. (tebodental.com)

In Canada, x-ray equipment under 1 MeV in energy is regulated by the provinces or territory within which it is being used, with the exception of those utilized at Federally Regulated Workplaces , which fall under the Canada Labour Code. (radiationsafety.ca)
This equipment is required to be registered through not only Radiation Safety, but through the West Virginia Radiological Health Program (WV RHP). (wvu.edu)
The Authorized User of such equipment is ultimately responsible for submitting all information required in order to register any radiation producing devices that he/she may possess to the Radiation Safety Department. (wvu.edu)
This program allows Radiation Safety immediate access to track the physical location, serial numbers, registration/permit expiration dates of all x-ray equipment on campus. (wvu.edu)
Part V of The Saskatchewan Employment Act and The Radiation Health and Safety Regulations, 2005 outline the rights and responsibilities of owners and operators of radiation equipment. (saskatchewan.ca)
The Radiation Safety Unit helps ensure owners and operators of radiation equipment and the public are not exposed to unnecessary radiation. (saskatchewan.ca)
Owners, installers and contractors of medical, dental, chiropractic, veterinary, and industrial X-ray facilities must provide the Radiation Safety Unit with notification when installing, substantially altering or inspecting radiation equipment. (saskatchewan.ca)
Only AERB Type approved dental X-ray equipment shall be installed /used. (gujaratradiation.com)
Quality Assurance tests of dental X-ray equipment is carried out periodically and after any maintenance and the records thereof are maintained. (gujaratradiation.com)
Routine maintenance of the dental X-ray equipment is carried out. (gujaratradiation.com)
Additionally, modern dental x-ray equipment is designed to emit as little radiation as possible while still producing clear and accurate images. (tebodental.com)
Dental professionals follow strict guidelines to ensure that the x-ray equipment is calibrated correctly and that the patient is positioned correctly to minimize exposure. (tebodental.com)
their duties of operating dental X-ray equipment. (crosscountrypolska.pl)
You may notice your hygienist covers you with protective equipment and leaves the room during the x-ray. (r2brokenarrow.com)
The protective equipment placed on the patient helps to further protect your body and organs that are more sensitive to radiation exposure. (r2brokenarrow.com)
Of the respondents, 53.9% had x-ray equipment. (bvsalud.org)

AADCO Medical, Inc. carries a variety of X-ray protection gloves to keep you safe in the operating room. (aadcomed.com)
Explore our catalog below today to purchase a set of radiation gloves to keep you safe. (aadcomed.com)

The techniques sensitivity to the different chemical components makes use of the energy dependence of the atomic scattering factors, which are different for all chemical elements, thereby disentangling the nanostructure of the different chemical components by the signature of the elemental X-ray absorption edges i.e. by employing synchrotron radiation. (scirp.org)

The name of this radiation derives from the cyclotron, a type of particle accelerator used since the 1930s to create highly energetic particles for study. (wikipedia.org)
Cyclotron radiation is emitted by all charged particles travelling through magnetic fields, not just those in cyclotrons. (wikipedia.org)
Cyclotron radiation from plasma in the interstellar medium or around black holes and other astronomical phenomena is an important source of information about distant magnetic fields. (wikipedia.org)
Cyclotron radiation has a spectrum with its main spike at the same fundamental frequency as the particle's orbit, and harmonics at higher integral factors. (wikipedia.org)
When the electrons are moving at relativistic speeds, cyclotron radiation is known as synchrotron radiation. (wikipedia.org)
The recoil experienced by a particle emitting cyclotron radiation is called radiation reaction. (wikipedia.org)
In the context of magnetic fusion energy, cyclotron radiation losses translate into a requirement for a minimum plasma energy density in relation to the magnetic field energy density. (wikipedia.org)
Cyclotron radiation would likely be produced in a high altitude nuclear explosion. (wikipedia.org)
Cyclotron Radiation from a Magnetized Plasma (PDF). (wikipedia.org)

Any mediation relating to disputes arising under the licence shall be conducted in accordance with the mediation rules of the World Intellectual Property Organization (http://www.wipo.int/amc/en/mediation/rules). (who.int)

Nanomedicine has stepped into the spotlight of radiation therapy over the last two decades. (mdpi.com)

Higher-energy particles produce higher-energy gamma rays, so one limitation to the maximum gamma-ray energy is the maximum energy to which particles can be accelerated. (astronomy.com)
When a gamma ray strikes the top of the atmosphere, it initiates a cascade of particles, which in turn produces a flash of blue light. (astronomy.com)

X-ray diffraction at high pressure and high/low temperatures using synchrotron radiation. (dtu.dk)

The report details that radiation transmitted by cell phones is potentially carcinogenic, based on an increased risk for a malignant type of brain cancer associated with wireless phone use. (businessinsider.com)
1986. Carcinogenic effects of radiation on the human skin. (cdc.gov)

Immediately following a surgical lumpectomy procedure, the tumour bed in a ... the co-located radiotherapy hospital, using an Intrabeam® 50 kVp X-ray device. (crosscountrypolska.pl)

Gamma radiation from space has very high energy levels. (astronomy.com)
1993. Protective effects of chlorogenic acid, curcumin and beta-carotene against gamma-radiation-induced in vivo chromosomal damage. (cdc.gov)

It combines superb light transmission with effective radiation protection . (marshield.com)

Radiation protection legislation sets requirements for the monitoring of ionising radiation in the workplace, covering workers in the nuclear industry as well as any other professions with increased radiation levels, such as aircraft altitudes. (npl.co.uk)
Radiation protection legislation and responsibilities of licensees 14. (crosscountrypolska.pl)

Awiggler is a high-power insertion device that was used in the past to produce a smooth wide-band X-ray spectrum. (lu.se)

The highest-energy gamma rays that have been detected by these observatories have energies of around 50 teraelectron volts, or 50 billion times the energy of an X-ray. (astronomy.com)

Large area cosmic ray observatories, like the Pierre Auger Observatory, are searching for them. (astronomy.com)
Using a framework of the radiation approximation followed by a two-term perturbation expansion for cosmic ray transport in the spherical polar coordinates (r, θ, φ) researchers identify the effect of cosmic ray radiation on shock dominated transport. (medwelljournals.com)
When the buoyancy parameter F r is negligible, researchers find that the cosmic ray density at shock boundary (E n ) decreases with increasing temperature. (medwelljournals.com)
It is also observed that the variation of radiation parameter N in cosmic ray transport has no significant effect in the temperature distribution. (medwelljournals.com)
Thus, even when radiation is significant, it does not really modify the temperature within the cosmic ray region. (medwelljournals.com)

In practical terms, this principle requires a trade-off since decreasing the level of radiation administered typically results in poorer CT image quality. (medimaging.net)
It is important to understand that the amount of radiation emitted during a dental x-ray is very low, and the benefits of having the x-ray typically outweigh any potential risks. (tebodental.com)
In conclusion, while it is important to be aware of the potential risks associated with radiation exposure from dental x-rays, as mentioned, it is vital to know that the amount of radiation emitted during a dental x-ray is very low and the benefits of having the x-ray typically outweigh any potential risks. (tebodental.com)

No person shall operate an X-ray machine until that individual has received radiation training, completed an examination with a passing score, and demonstrated the ability to use the X-ray machine in a safe and competent manner. (utulsa.edu)
Co-operate with the operator, to avoid repeat dental X-ray examination. (gujaratradiation.com)
Female patient, if pregnant, must inform the operator so that necessary precaution can be taken during dental X-ray examination. (gujaratradiation.com)
TLD badges are provided to all the operators and workers involved during X-ray examination. (gujaratradiation.com)
using X-ray devices in radiation examination rooms, personnel are protected. (crosscountrypolska.pl)

One of such problems is the radiation damage that limits the achievable resolution and can be harmful. (lu.se)

Twenty five percent of survey respondents said that radiation doesn't concern them at all and sixty one percent said that it concerns them a little bit or to some extent. (businessinsider.com)

However, and understandably so, some people may be concerned about the potential risks associated with radiation exposure from dental x-rays. (tebodental.com)
Many patients wonder if dental x-rays are safe and if they should worry about radiation exposure. (r2brokenarrow.com)
Dental x-rays do not require much radiation to produce images. (r2brokenarrow.com)

A thoracic spine x-ray is an x-ray of the 12 chest (thoracic) bones (vertebrae) of the spine. (medlineplus.gov)
My job wants me to do a Chest X-ray and I really want to avoid it for obvious peatarian reasons. (raypeatforum.com)
Unfortunately its mandatory by law to get a chest X-ray when finding work where I live. (raypeatforum.com)
Always use the TLD at chest level while dental X-ray unit is being operated. (gujaratradiation.com)
Dr Callister spoke about a project in Leeds that looked at the effects of lowering the threshold for referral for chest X-ray. (medscape.com)
In fact, he said: 'The amount of radiation [from a chest X-ray] is less than you get from a 2-week holiday in Cornwall. (medscape.com)
The main thrust, however, was education for general practices to encourage them to make more chest X-ray referrals. (medscape.com)

It is widely believed that on low-emittance synchrotrons this X-ray source loses its spatial and spectral homogeneity and therefore becomes less ideal than a scanning undulator. (lu.se)

Anatomy14

Organisms15

Diseases34

Chemicals and Drugs35

Analytical, Diagnostic and Therapeutic Techniques and Equipment80

Phenomena and Processes54

Disciplines and Occupations9

Anthropology, Education, Sociology and Social Phenomena2

Technology, Industry, Agriculture8

Humanities1

Information Science13

Named Groups2

Health Care42

Geographicals4

Dose20

Neutron1

Photons4

National Council on Radiation Protection1

Imaging28

Levels of radiation3

Detectors1

Physics5

Measurements1

Diagnostic6

Radiography2

Less radiation2

Emit radiation2

Scatter5

Detector4

Abstract1

Significantly2

Electromagnetic3

Amount of radiation exposure2

Ionizing Radiation9

Environments6

Aprons2

Fluorescence4

Parameters2

Radiology2

Search1

Shields1

Shielding11

Electron2

Coherent X-ray1

Beam8

Equipment16

Gloves2

Absorption1

Cyclotron9

Licence1

Therapy1

Particles2

Diffraction1

Carcinogenic2

Radiotherapy1

Gamma radiation2

Effective radiation1

Protection legislation2

Spectrum1

Energies1

Cosmic5

Typically3

Examination5

Limits1

Respondents1

Dental x-ra3

Chest7

Synchrotrons1