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  • relatively
  • For stroke, the estimated excess relative risk per gray was 9% (95% confidence interval 1% to 17%, P=0.02) on the basis of a linear dose-response model, but an indication of possible upward curvature suggested relatively little risk at low doses. (nih.gov)
  • threshold
  • The best estimate of a threshold dose was 0 Gy, with an upper 95% confidence limit of about 0.5 Gy. (nih.gov)
  • atomic
  • Radiation exposure and circulatory disease risk: Hiroshima and Nagasaki atomic bomb survivor data, 1950-2003. (nih.gov)
  • Mortality from stroke or heart disease as the underlying cause of death and dose-response relations with atomic bomb radiation. (nih.gov)
  • American College o
  • The American College of Radiology (ACR) and the Radiological Society of North America (RSNA) have both launched national dose registry projects. (appliedradiology.com)
  • November 8, 2017 -- The internet often harbors inaccurate information regarding CT radiation dose, with online media outlets aimed at the lay public leading the way, according to a new study published online in the Journal of the American College of Radiology . (auntminnie.com)
  • Guidelines available in the American College of Radiology (ACR) Patient and Family Radiation Safety Resource List and the ECR EuroSafe Imaging website served as the standard of information accuracy. (auntminnie.com)
  • tumor
  • The study compared the radiation dose to patient's skin during transcatheter arterial embolization, a procedure that blocks the flow of a blood to a tumor. (redorbit.com)
  • And while traditional chemo-radiation has demonstrated good tumor control and survival rates for patients, too often they encounter unpleasant outcomes that can include difficulty swallowing solid foods, impaired nutrition, aspiration and feeding tube dependence. (medindia.net)
  • mammography
  • For a single multiphase abdomen and pelvis CT scan, the median effective radiation dose delivered was equal to about 74 mammography series and 442 conventional chest radiography series. (medpagetoday.com)
  • For a CT coronary angiogram, the dose delivered to the breast equaled about 15 mammography series and the dose delivered to the lung equaled about 711 chest radiography series. (medpagetoday.com)
  • Philips MicroDose mammography SI with single-shot spectral imaging delivers proven dose efficiency, outstanding image quality, and non-invasive spectral applications in one fast and comfortable mammogram and is designed to be the platform for future advanced applications such as spectral tomosynthesis. (philips.co.uk)
  • However, researchers have struggled to obtain significant dose reductions with respect to conventional mammography, with most studies actually reporting doses exceeding clinical limits . (esrf.eu)
  • Here, we set out to demonstrate that an optimised approach to XPCI can lower the dose in mammography by at least one order of magnitude compared to clinical practice. (esrf.eu)
  • occupational radiation
  • The basic principle of dose reconstruction is to characterize the occupational radiation environment workers were exposed to using available worker and/or workplace monitoring information. (cdc.gov)
  • radiology
  • In 2008, the ACR expanded its Dose Index Registry Pilot Project, part of the National Radiology Data Registry (NRDR). (appliedradiology.com)
  • The ICRP, founded in 1928 as the International X-ray and Radium Protection Committee, is a daughter organization of the International Society of Radiology, although its work now focuses on all aspects of protection from ionizing radiation, not limited to medical applications. (ahajournals.org)
  • Mostly that means minimizing exposure to radiation," said lead investigator Jeffrey Schmall, PhD, a research associate in UPenn's department of radiology. (auntminnie.com)
  • Given the need of comprehensive dose analysis in interventional radiology practice, the aim of the current study was to implement a comprehensive procedural and occupational real-time dose monitoring system to obtain insight in the procedural and occupational dose for a wide variety of procedures. (springer.com)
  • standard dose
  • These registry efforts are important because there is precious little insight into what is a "standard dose" as well as what the effects of this dose could be. (appliedradiology.com)
  • Kalra MK, Prasad S, Saini S et al (2002) Clinical comparison of standard-dose and 50% reduceddose abdominal CT: effect on image quality. (springer.com)
  • Kalra MK, Maher MM, Prasad SR et al (2003) Correlation of patient weight and cross-sectional dimensions with subjective image quality at standard dose abdominal CT. (springer.com)
  • scan
  • Point out that the radiation dose delivered from a CT scan is much higher than that delivered by conventional radiography. (medpagetoday.com)
  • In the first study, based on information from four San Francisco-area hospitals, median effective doses ranged from 2 mSv for a routine head scan to 31 mSv for a multiphase abdomen and pelvis scan, according to Rebecca Smith-Bindman, MD, of the University of California San Francisco, and colleagues. (medpagetoday.com)
  • The median effective radiation doses associated with various exam types ranged from 2 mSv for a routine head scan to 31 mSv for a multiphase abdomen and pelvis CT scan. (medpagetoday.com)
  • There was wide variation in the median effective doses, even within the same type of scan, the researchers wrote. (medpagetoday.com)
  • The quality of information depended on the search terms used, where specific terms such as "CT radiation dose" generated webpages with more relevant and accurate information than broader phrases such as "CT scan. (auntminnie.com)
  • This split bolus CTA provides both arterial and delayed phases in one scan, reducing radiation dose by one-third. (healthimaging.com)
  • 2002
  • Since its inception in 2002, the NIOSH Radiation Dose Reconstruction Program has become one of the most important workers' compensation programs in the U.S. From the beginning, NIOSH has tasked the ORAU Team -led by ORAU and including NV5/Dade Moeller and MJW Technical Services, Inc.-with reconstructing radiation doses for current and former workers of DOE and atomic weapons employers. (orau.org)
  • DoseAware
  • DoseAware delivers real-time visualization, display, and tracking of clinical staff's X-ray dose exposure your staff perform lengthy interventional procedures, while reducing fluoroscopy time and managing their radiation exposure - on the spot. (philips.co.uk)
  • patient's
  • 4. The catheter of claim 1, wherein the inflatable member is an inflatable balloon and further including a plurality of collars affixed over the inflatable balloon to create a plurality of balloon sections to enhance the centering of a radiation source wire within the patient's body lumen. (google.es)
  • 5. The catheter of claim 1, wherein the inflatable member is configured to center a radiation source wire within the patient's body lumen so that radiation from the radiation source is uniformly distributed to the body lumen. (google.es)
  • units of radiation
  • Its principal objective is to develop international recommendations on quantities and units of radiation, on procedures for the measurement and application of these quantities, and on physical data required for the application of these procedures. (ahajournals.org)
  • examinations
  • An innovated dose solution provides the infrastructure for me to make sure that we have a quality management program in place in our department that ensures that examinations which use radiation doses are discharged in the optimal manner. (philips.co.uk)
  • median
  • In the latest study, exposure varied widely both within and between hospitals, with a median 13-fold difference between the highest and lowest dose for each study type, "highlighting the need for greater standardization across institutions," they wrote. (medpagetoday.com)
  • Median (±IQR) DAP doses ranged from 2.0 (0.8-3.1) (percutaneous gastrostomy) to 84 (53-147) Gy cm 2 (aortic repair procedures). (springer.com)
  • Median (±IQR) first operator doses ranged from 1.6 (1.1-5.0) μSv to 33.4 (12.1-125.0) for these procedures, respectively. (springer.com)
  • pediatric
  • Brenner DJ, Elliston CD, Hall EJ, et al (2001) Estimated risks of radiation-induced fatal cancer from pediatric CT. (springer.com)
  • Donnelly LF, Emery KH, Brody AS, et al (2001) Minimizing radiation dose for pediatric body applications of single-detector helical CT: strategies at a large children's hospital. (springer.com)
  • angiography
  • Other factors can be at least partially controlled, such as the position of the medical staff relative to the patient, the X-ray equipment and acquisition technique (fluoroscopy, digital subtraction angiography (DSA), roadmap, or 3D), and the radiation protection tools used. (springer.com)
  • effects of ionizing
  • Biological effects of ionizing radiation can be classified as deterministic or stochastic. (ahajournals.org)
  • Toward its goals, it has issued ≈100 reports authored by expert panels providing specific recommendations in 1 area of radiological protection, as well as periodically updated general recommendations, reflecting the state of knowledge on the biological effects of ionizing radiation. (ahajournals.org)
  • Committee on the Biological Effects of Ionizing Radiation. (springer.com)
  • limits
  • Passengers flying in Europe and North America exceed the International Commission on Radiological Protection (ICRP) annual dose limits at an annual average of 510 or 420 flight hours per year, respectively. (mit.edu)
  • patient
  • When used in combination with the advanced technologies of the iCT, Ingenuity, and Brilliance scanner families, this provides a unique approach to managing important factors in patient care - low energy, low dose, and low injected contrast imaging. (philips.co.uk)
  • Therefore, decreasing the exposure parameters will play a great role in managing patient radiation dose. (philips.cz)
  • Consideration should be given to milliampere-second (mAs), a tube current time product which plays a big role in patient absorbed dose. (philips.cz)
  • The study served the purpose to manage patient receive dose. (philips.cz)
  • Radiation safety in fluoroscopy-guided interventions is crucial for patient care quality assurance as well as for occupational safety. (springer.com)
  • However, studies presenting comprehensive data on the combined patient and staff dose are lacking due to the absence of dose monitoring systems that can efficiently and accurately co-register patient and staff dose. (springer.com)
  • Adjusting kilovoltage peak (kVp) can help decrease patient dose while also improving contrast-to-noise ratio, wrote Michael I. Levinson, with Yale School of Medicine in New Haven, Connecticut, and colleagues. (healthimaging.com)
  • conventional
  • In Figure 117 , the raw EI image ( Figure 117a ) and the retrieved phase image ( Figure 117b ) are compared to the conventional mammogram acquired at a hospital ( Figure 117c ) (32 kVp, dose of 4.1 mGy). (esrf.eu)
  • This image depicts breast features with at least the same quality as in the conventional mammogram, although at a dose reduced by more than one order of magnitude. (esrf.eu)
  • colleagues
  • Schmall and colleagues then generated TOF PET images, beginning with a full dose of 3.7 MBq/kg and continuing with reduced dose levels of 50%, 33%, 22%, and 11% (0.4 MBq/kg). (auntminnie.com)
  • Levinson and colleagues use low-kVp imaging and split bolus technique to reduce this dose. (healthimaging.com)
  • excessive dose
  • Bridget Henry, from Ardminane, Killavil, Ballymote, Co Sligo, was attending St Luke's Hospital in Rathgar for treatment for a lump on her lip when she was given the excessive dose of radiation. (rte.ie)
  • Through her son Charles Henry, she sued the Health Service Executive over the provision of an excessive dose of radiation therapy at St Luke's Hospital on 16 January 2017. (rte.ie)
  • The availability of a dose registry will create the ability to set national guidelines for what an acceptable dose is and will also define an excessive dose. (appliedradiology.com)
  • contrast
  • A new approach to X-ray phase contrast imaging developed at the ESRF enables unprecedented low doses in breast imaging and has the potential for being translated into clinical use. (esrf.eu)
  • depends
  • For tomographic imaging modalities, the quality of the reconstructed images largely depends on the ionization dose used. (medgadget.com)
  • lower the dose
  • So the question is: Do we match the signal-to-noise ratio, which could potentially allow us to lower the dose by a factor of five or maybe 10? (auntminnie.com)
  • clinical
  • The next step in our research will thus focus on the translation of these considerable dose reductions to a laboratory EI setup, as this would enable the method to be implemented in a clinical setting. (esrf.eu)
  • reductions
  • utilize a low-kVp protocol during renal donor CTAs which can result in size-specific dose reductions as high as 65 percent, without a loss in quality of the arterial phase, they wrote. (healthimaging.com)
  • Their liver donor CTA protocol produces similar dose reductions by using 120 kVp for unenhanced CT of the abdomen, followed by 80 kVp in the arterial and portal venous phases. (healthimaging.com)