نتایج جستجو برای: x ray radiography
تعداد نتایج: 674380 فیلتر نتایج به سال:
OBJECTIVE To assess whether accident and emergency (A&E) nurses using the Ottawa Ankle Rules could detect all ankle fractures. DESIGN Prospective observational study. SETTING A&E department of a university teaching hospital. SUBJECTS All patients who presented with ankle injuries who were initially assessed by a nurse taught the Ottawa Ankle Rules. OUTCOME MEASURES (1) The numbers of pa...
Current advances in neonatal care not only include medical equipment designed for small infants, such as advances in incubators used to maintain infant body temperatures at a constant level and ventilators able to gently control respiration in even the lungs of newborns that weigh less than 1000 grams, but also clearly include major contributions from developments in drugs, such as artificial l...
A new spectroscopic technique for the measurement of the sizes of hard X-ray sources produced by the irradiation of solid-density targets by intense laser radiation is discussed. The technique is based on the source broadening of K shell spectral lines from targets irradiated by intense picosecond laser pulses. The spectra are recorded by a modified Cauchois type spectrometer, where the detecto...
Besides the overall mass density, strength of trabecular bone depends significantly on its microstructure. However, due to dose constraints in medical CT imaging, it is impossible to gain sufficient information about very fine bone structures in vivo on the micrometer scale. Here we show that a recently developed method of X-ray vector radiography (XVR), an imaging method which uses X-ray scatt...
local-reference patient dose evaluation in conventional radiography examinations in mazandaran, iran
background: the most efficient application of ionizing radiation is serving medical purposes and using this radiation has caused people to learn that artificial sources of radiation exposure among these resources can be of highest exposure rate. objective: the present study is aimed at initially establishing a baseline for local-reference dose level in mazandaran, iran in 12 projections of th...
background: eos is a 2d/3d muscle skeletal diagnostic imaging system. the device has been developed to produce a high quality 2d, full body radiographs in standing, sitting and squatting positions. three dimensional images can be reconstructed via stereos software. this health technology assessment study aimed to investigate efficacy, effectiveness and cost-effectiveness of new emerged eos imag...
Southwest Research Institute (SwRI ® ) conducted a study to determine whether pulsed x-ray sources used in conjunction with amorphous silicon real-time imaging plates could provide equivalent radiographs to those obtained using isotopic sources with conventional radiographic film for inspection of schedule 40 steel pipe. Radiographic procedures for the two techniques were developed; test welds ...
Conventional radiography produces a single image of an object by measuring the attenuation of an x-ray beam passing through it. When imaging weakly absorbing tissues, x-ray attenuation may be a suboptimal signature of disease-related information. In this paper we describe a new phase-sensitive imaging method, called multiple-image radiography (MIR), which is an improvement on a prior technique ...
Neutron radiography systems based on Gd, Dy and In metallic foils and X-ray films have been used at this centre since early seventies for various NDT and R&D work in nuclear, defense and aerospace industries. In recent years use of digital detection systems such as neutron scintillator and CCD based imaging systems and photostimulated luminescence based phosphor imaging plate systems have been ...
Foreign body aspiration is a potentially life-threatening event especially in those who are younger than 5 years old. Aspiration could be presented as a spectrum, ranging from absolutely asymptomatic event to more sever events including choking, respiratory distress and cyanosis or even death. Although foreign bodies in lung may not be visualized on X-ray, X-ray radiography is considered as a f...
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