Loading...
  • photon
  • and a unit that produces data before reconstruction on the basis of the detected X-ray photon which corresponds to the second energy region, corrects and processes the data before reconstruction with the scattered photon distribution so as to produce corrected data, and reconstructs an image corresponding to the second energy region for which scattered radiation is corrected. (patentsencyclopedia.com)
  • invention relates
  • The invention relates to a method of determining the contour of a body in order to reconstruct the absorption distribution of radiation in a flat examination zone of the body, the examination zone being situated within a positioning zone which encloses the examination zone and in which the body is positioned. (google.com)
  • shields
  • RADPAD® Radiation Protection Shields are used by physicians and cath lab personnel during fluoro-guided procedures to protect them from the harmful effects of ionizing x-radiation. (radpad.com)
  • These Drape Armour® free positional shields are designed to protect at the procedure site where scatter radiation is most prevalent. (meritemea.com)
  • 1 Consequently, interventionists that perform radiological interventional techniques adopt the as low as reasonably achievable (ALARA) principle, 2 limiting the duration of the exposure, increasing the distance from the radiation source and maintaining shields of radiological protection. (rbci.org.br)
  • detectors
  • Most systems which produce images of the interior of an object, such as the human body, utilize in-line unscattered radiation, such as x-ray sources and detectors. (google.com)
  • contrast
  • The evaluation of PASSSA in radiographic mode through simulations and experiments revealed noteworthy results both in terms of image contrast improvement and scatter induced bias reduction. (insa-lyon.fr)
  • The scattered radiation causes a loss of contrast in the results, and its correction has proven to be a complex problem, due to its dependence on energy, material composition, and geometry. (spiedigitallibrary.org)
  • angle
  • It was found that Monte Carlo results were in good agreement with the experimental data, whereas the small angle approximation considerably underestimated the multiple scattering contributions to the transmitted light for our experimental conditions. (spie.org)
  • interventional
  • Placed on the patient in front of the operator, RADPAD® works by absorbing scatter radiation coming from the patient and creating a "shade zone" for the cath lab team to work in during interventional procedures. (radpad.com)
  • The RADPAD® works by absorbing scatter radiation that is projected from the patient, as well as creates a "shade zone" for cath lab personnel so they are protected during interventional procedures. (radpad.com)
  • among the professionals exposed to radiation, interventional cardiologists are those who accumulate the highest load received, mainly due to exposure to the scattered radiation from the patient receiving the primary beam of X-rays. (rbci.org.br)
  • Multiple
  • Multiple spattering effects were determined by concurrent use of two optical systems for the same model droplet cloud, of which one (the reference system) was negligibly affected by multiple scattering. (spie.org)
  • 1986. Comparative accuracy of selected multiple scattering approximations. (koreascience.or.kr)
  • G01V5/0041 - Multiple energy techniques using one type of radiation, e.g. (google.com)
  • method
  • This paper presents two conclusions concerning the scattered light distribution method for particle sizing: (1) a large difference in vector values is one of the primary causes of an ill-conditioned kernel matrix, and (2) under narrow band and high resolution particle size conditions, the forward scattering region would introduce a larger error into the particle size distribution. (osapublishing.org)
  • reduction
  • The median radiation reduction was 50.6% (interquartile range - IQ from 39.42% to 51.05%) using the lower skirt shield, 71.3% (IQ from 67.66% to 77.05%) with the addition of an upper shield in angulated position, and 84.7% (IQ from 83.75% to 85.87%) with the addition of an upper shield aligned with the lower shield. (rbci.org.br)
  • integral
  • The corresponding integral equation for the scattering, which contains N singular kernels, is transformed into N non-singular integral equations for the angular Fourier transform of the field indide each scatterer. (openarchives.gr)
  • effects
  • The RADPAD® from Worldwide Innovations & Technologies, Inc. is a sterile shield comprised of specially developed radiation attenuating material, clinically-proven to protect both physicians and patients from the harmful effects of scatter radiation during fluoro-guided procedures and CT scans. (radpad.com)
  • But scattering effects by altitude of cloud was not serious. (koreascience.or.kr)
  • In addition to the simple low-density process, where scattering intensities from the individual plasma electrons are summed, it has become possible to exploit the theory of plasma fluctuations in order to extend the analysis of scattering data to densities where collective effects predominate. (springer.com)
  • primary beam
  • Although this scatter radiation is much weaker than the primary beam, there has been concern that women exposed to it during mammography could face an increased risk of cancer, especially in radiosensitive areas like the thyroid gland. (bio-medicine.org)
  • produces
  • Raman scattering of near-infrared femtosecond laser pulses produces coherent longitudinal optical phonon and plasmon oscillations in the semiconductor InSb. (ebscohost.com)
  • Analysis
  • The data analysis results in a higher scattered irradiance summer maximum and a lower winter minimum during the prevalence of continental air masses than that of maritime air masses. (springer.com)
  • energy
  • Resonant Inelastic X-ray Scattering (RIXS) in the soft x-ray range is an element-specific energy-loss spectroscopy used to probe the electronic and magnetic excitations in strongly correlated solids. (semanticscholar.org)
  • doses
  • Clinical studies have shown that exposure to low and high doses of ionizing radiation can be a risk factor in developing Alzheimer's 2 . (radpad.com)
  • properties
  • This invention involves measurement of optical properties of materials with sub-micron spatial resolution through infrared scattering scanning near field optical microscopy (s-SNOM). (patents.com)
  • sterile
  • Sterile, disposable RADPAD® Radiation Protection Products are placed directly on the patient to protect the operator and cath lab personnel during fluoro-guided procedures from harmful scatter radiation. (radpad.com)
  • range
  • The scattered power and the depolarization ratio fit with the corresponding values obtained in the geometric optics approximation in the range of its validity. (osapublishing.org)