Results 211 to 220 of about 543,949 (257)
Some of the next articles are maybe not open access.
Organs at risk radiation dose constraints
Cancer/Radiothérapie, 2022Dose constraints are essential for performing dosimetry, especially for intensity modulation and for radiotherapy under stereotaxic conditions. We present the update of the recommendations of the French society of oncological radiotherapy for the use of these doses in classical current practice but also for reirradiation.
G, Noël, D, Antoni
openaire +2 more sources
European Radiology, 2022
To estimate organ dose to major radiosensitive organs during pediatric body C-arm CBCT and determine normalized organ doses using a state-of-the-art equipment.This is a study performed utilizing physical anthropomorphic phantoms. Four anthropomorphic phantoms that simulate the average individual as a neonate, 1-year-old, 5-year-old, and 10-year-old ...
Antonios E. Papadakis, John Damilakis
openaire +2 more sources
To estimate organ dose to major radiosensitive organs during pediatric body C-arm CBCT and determine normalized organ doses using a state-of-the-art equipment.This is a study performed utilizing physical anthropomorphic phantoms. Four anthropomorphic phantoms that simulate the average individual as a neonate, 1-year-old, 5-year-old, and 10-year-old ...
Antonios E. Papadakis, John Damilakis
openaire +2 more sources
ORGAN DOSES AND EFFECTIVE DOSE FOR FIVE PET RADIOPHARMACEUTICALS
Radiation Protection Dosimetry, 2016Diagnostic investigations with positron-emitting radiopharmaceuticals are dominated by (18)F-fluorodeoxyglucose ((18)F-FDG), but other radiopharmaceuticals are also commercially available or under development. Five of them, which are all clinically important, are (18)F-fluoride, (18)F-fluoroethyltyrosine ((18)F-FET), (18)F-deoxyfluorothymidine ((18)F ...
Martin, Andersson +4 more
openaire +2 more sources
Radiation Dose Estimations to the Thorax Using Organ-Based Dose Modulation
American Journal of Roentgenology, 2012The purpose of this study was to assess the radiation dose distribution and image quality for organ-based dose modulation during adult thoracic MDCT.Organ doses were measured using an anthropomorphic adult female phantom containing 30 metal oxide semiconductor field-effect transistor detectors on a dual-source MDCT scanner with two protocols: standard ...
Donald P Frush, Greta Toncheva
exaly +3 more sources
Japanese Journal of Radiological Technology, 2022
The purpose of this study was to evaluate the differences in the organ doses and the effective doses using three types of automated organ dose estimation software for low-dose computed tomography (CT) screening for lung cancer and to evaluate the correlations between each dose and size-specific dose estimates (SSDEs).Seventy-two adults who underwent ...
Masaaki, Fukunaga +2 more
openaire +2 more sources
The purpose of this study was to evaluate the differences in the organ doses and the effective doses using three types of automated organ dose estimation software for low-dose computed tomography (CT) screening for lung cancer and to evaluate the correlations between each dose and size-specific dose estimates (SSDEs).Seventy-two adults who underwent ...
Masaaki, Fukunaga +2 more
openaire +2 more sources
Organ doses and effective doses in pediatric radiography: Patient-dose survey in finland
Acta Radiologica, 2009Background: Use of the effective dose in diagnostic radiology permits the radiation exposure of diverse diagnostic procedures to be quantified. Fundamental knowledge of patient doses enhances the implementation of the “as low as reasonably achievable” (ALARA) principle.
T, Kiljunen +4 more
openaire +2 more sources
Determining organ dose: the holy grail
Pediatric Radiology, 2014Among the various metrics to quantify CT radiation dose, organ dose is generally regarded as one of the best to reflect patient radiation burden. Organ dose is dependent on two main factors, namely patient anatomy and irradiation field. An accurate estimation of organ dose requires detailed modeling of both factors.
Ehsan, Samei +2 more
openaire +2 more sources
On effective dose for radiotherapy based on doses to nontarget organs and tissues
Medical Physics, 2015Purpose:The National Council for Radiation Protection and Measurement (NCRP) published estimates for the collective population dose and the mean effective dose to the population of the United States from medical imaging procedures for 1980/1982 and for 2006.
Adam J, Uselmann, Bruce R, Thomadsen
openaire +2 more sources
The concept of the effective dose a proposal for the combination of organ doses
Radiation and Environmental Biophysics, 1975Irradiation of the human body by external or internal sources leads mostly to a simultaneous exposure of several organs. However, so far no clear and consistent recommendations for the combination of organ doses and the assessment of an exposure limit under such irradiation conditions are available. Following a proposal described in ICRP-publication 14
openaire +2 more sources
A Model to Accumulate Fractionated Dose in a Deforming Organ
International Journal of Radiation Oncology Biology Physics, 1999Measurements of internal organ motion have demonstrated that daily organ deformation exists throughout the course of radiation treatment. However, a method of constructing the resultant dose delivered to the organ volume remains a difficult challenge. In this study, a model to quantify internal organ motion and a method to construct a cumulative dose ...
David A. Jaffray, J W Wong, J W Wong
exaly +3 more sources