نتایج جستجو برای: reproducibility of measurements
تعداد نتایج: 21185698 فیلتر نتایج به سال:
despite the current use of radiography for quantifying sagittal skeletal measurements, it is an unsuitable way for screening or epidemiologic purposes. although not fully approved, anthropometric measurements have been suggested as a substitute, and considering displacement of soft tissues, could possibly lead to more consistent results. the purpose of this study was to evaluate the reliability...
introduction: image distortion is one of the major problems of magnetic resonance imaging (mri) for use in 3dmri, velocity mri, fmri and radiotherapy treatment planning (rttp). it is widely known that the most obvious effect of the inhomogenity of the magnetic fields and the nonlinearity of the gradient is the geometric distortion of mr tomograms. in this study, the...
background and aims. the main purpose of this study was to assess intra- and inter-examiner reproducibility of probing depth measurements with a manual periodontal probe. materials and methods. in this study, 32 dental students in tabriz faculty of dentistry with normal periodontium were evaluated. each tooth of the upper right quadrants, except the third molars, was examined. probing depths we...
the aim of this study was to investigate the reproducibility of natural head position (nhp) at different times of the day and to compare the reproducibility of the initial photographs with 6-month repeat photographs.the participants in this prospective study were seventy 14 to 50-year-old individuals. each participant was photographed with a digital camera twice, at three different times of the...
fluorescence chemical sensors for the highly sensitive and selective determination of pb2+ , hg2+, co2+ and fe3+ ions in aqueous solutions are described. the ion sensing system was prepared by incorporating lipophilic ligand (l) as a neutral ion-selective fluoroionophore in the plasticized pvc membrane containing sodium tetraphenylborate or potasium tetrakis (p-chlorophenyl) borate as a liphoph...
a novel silver (ag) nanocomposite electrode was proposed that fabricated from metal nanostructures and ionic liquids. the combined application of unique properties of nanomaterials and ionic liquids in the design of this ag nanocomposite results in electrodes with interesting advantages compared to the conventional metal disk electrode. in the first part of this thesis, the elecrocatalytic eff...
Background-The pattern of growth of the uterus was examined by ultrasound examinations of 358 girls who attended a paediatric endocrine outpatient department but were shown not to have any endocrine defect. Method-The uterus was measured in length and width at the cervix and at the fundus (cm). Endometrial thickness was measured (mm). Scans were divided by Tanner breast stage and the dimensions...
Introduction: Image distortion is one of the major problems of magnetic resonance imaging (MRI) for use in 3DMRI, velocity MRI, FMRI and radiotherapy treatment planning (RTTP). It is widely known that the most obvious effect of the inhomogenity of the magnetic fields and the nonlinearity of the gradient is the Geometric Distortion of MR tomograms. In this study, the...
in this thesis protic and aprotic ammonium-based ionic liquids were synthesized and their surface tensions were measured in the range of 298-373k. the protics are alkyl ammonium-based ils with the carboxylate (formate, acetate, propionate) anion and aprotics are quaternary ammonium-based ils with bis(trifluoromethylsulfonyl)imide anion. capillary rise method was used for surface tension measure...
background: fatigue, a major cause of disability in individuals with multiple sclerosis (ms), is associated with reduced quality of life. the aim of this study was to evaluate the reliability and reproducibility of the persian version of modified fatigue impact scale (mfis) in iranian patients with ms. methods: this study included 15 subjects with clinically definite ms, 15 hospitalized patient...
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