Results 51 to 60 of about 6,644,877 (248)
COMPARATIVE SURVEY OF RADIATION DOSES TO PATIENTS IN COMPUTED TOMOGRAPHY IN A FEDERAL HOSPITAL
Вестник рентгенологии и радиологии, 2016 Objective – to analyze radiation exposure due to computed tomography (CT) of brain, chest, abdomen and pelvis in a large multifield federal hospital and feasibility of low-dose CT-examinations. Material and methods.
Е. I. Matkevich +2 more
doaj +1 more source
Proceedings of the National Academy of Sciences of the United States of America, 2019 Significance This study provides information on sex ratio at birth (SRB) reference levels and SRB imbalance. Using a comprehensive database and a Bayesian estimation model, we estimate that SRB reference levels are significantly different from the ...
Fengqing Chao +3 more
semanticscholar +1 more source
Three-axis attitude and direction reference instrument has only one moving part [PDF]
, 1966 Lunar vehicle instrument combines the functions of attitude reference, direction reference, and display in a unit having only one moving part. The device, using bubble levels and a calibrated dial, is used as a sextant prior to takeoff, and as a backup ...
Bossler, F. B.
core +1 more source
Diagnostic and Interventional RadiologyPURPOSE: The PURPOSE: of this study is to establish local diagnostic reference levels (LDRLs) for computed tomography (CT) procedures using cloud-based automated dose-tracking software.
Gökhan Kahraman +2 more
doaj +1 more source
Brazilian Journal of Radiation SciencesDue to the declaration of the Covid-19 pandemic by the World Health Organization in 2020, there was a significant increase in imaging exams to evaluate lung problems, these being the organs most affected by the disease. Given this demand, it is essential
Warley Ferreira Felix +3 more
doaj +1 more source
The establishment of computed tomography diagnostic reference levels in Portugal [PDF]
Radiation Protection Dosimetry, 2013 The aims of this study were to investigate the frequency of Portuguese computed tomography (CT) examinations, identify protocol application and establish diagnostic reference levels (DRLs). CT departments (n=211) were surveyed nationally (June 2011-January 2012) and CT protocol information and dose data were collected, as were retrospective age ...
Santos, Joana +4 more
openaire +5 more sources
National mapping survey of indoor radon levels in the Maltese Islands (2010-2011) [PDF]
, 2013 Aim: To conduct a national geographically based survey to determine the distribution of the mean annual indoor radon gas concentration levels in dwellings in the Maltese Islands and map these levels; to identify any areas with annual mean indoor radon ...
Baluci, Christine +5 more
core
One lithium level >1.0 mmol/L causes an acute decline in eGFR: findings from a retrospective analysis of a monitoring database [PDF]
, 2014 Objectives Lithium is a mainstay of bipolar disorder treatment, however, there are still differences in opinion on the effects of lithium use on renal function.
Anderson, Tim +5 more
core +1 more source
, 1998 Composition models specify the functional relationships among phenomena or constructs at different levels of analysis (e.g., individual level, team level, organizational level) that reference essentially the same content but that are qualitatively ...
D. Chan
semanticscholar +1 more source
Developing diagnostic reference levels in Japan
Japanese Journal of Radiology, 2020 In recent years, concern regarding the effects of radiation exposure in medical care has increased with the rapidly expanding use of medical radiation.
R. Kanda +6 more
semanticscholar +1 more source