نتایج جستجو برای: compensated variation cv
تعداد نتایج: 337413 فیلتر نتایج به سال:
The appreciation of the substantial influence of biological variation (BV) on laboratory testing and interpretation of laboratory results has represented a milestone in the history of laboratory medicine. It has paved the way for a wide series of studies aimed to accurately define the components of BV, set analytical quality specifications and related goals for internal quality control and exte...
OBJECTIVES To determine the extent of inter-individual variation in clearance of midazolam in children and establish which factors are responsible for this variation. METHODS A systematic literature review was performed to identify papers describing the clearance of midazolam in children. The following databases were searched: Medline, Embase, International Pharmaceutical Abstracts, CINAHL an...
BACKGROUND Cardiac troponin-I assays have been validated in horses.'High-sensitivity' cardiac troponin assays are now the standard in human cardiology. OBJECTIVE Appropriately validate the'high-sensitivity' cardiac Troponin-T (hscTnT) assay for clinical use in horses, establish reference intervals, determine the biological variation, and demonstrate assay utility in selected clinical cases. ...
Synbranchus marmoratus is a facultative air-breathing fish, which uses its buccal cavity as well as its gills for air-breathing. S. marmoratus shows a very pronounced tachycardia when it surfaces to air-breathe. An elevation of heart rate decreases cardiac filling time and therefore may cause a decline in stroke volume (V(S)), but this can be compensated for by an increase in venous tone to mai...
The study aims to examine whether the annual variations in fasting plasma glucose (FPG) measurements, represented by the coefficient of variation (CV), predict cancer incidence and mortality in the subsequent years independent of traditional risk factors of type 2 diabetic patients. A computerized database of patients with type 2 diabetes of 30 years old and older (n=4805) enrolled in the Diabe...
Purpose: We aim to evaluate the repeatability of a new fluorescence lifetime imaging (FLIM) technique which measures time-resolved autofluorescence to assess metabolism of the retina. Materials and methods: We performed FLIM with two spectral channels (channel 1: 490–560 nm and channel 2: 560–700 nm) on 10 healthy volunteers, with 10 replicates per volunteer. From the 30 fundus FLIM images, we ...
Introduction Arterial stiffness has long been recognized to play a central role in the development of cardiovascular (CV) disease. A significant relationship has been demonstrated between reduced aortic compliance and fatal and non-fatal CV events independently of classical CV risk factors [1]. Accurate measurement of aortic distensibility in vivo would constitute a powerful tool for monitoring...
We investigated the relative biological effectiveness (RBE) of therapeutic proton beams at six proton facilities in Japan with respect to cell lethality of HSG cells. The RBE of treatments could be determined from experimental data. For this purpose, we used a cell survival assay to compare the cell-killing efficiency of proton beams. Among the five linear accelerator (LINAC) X-ray machines at ...
We assessed age- and sex-related variation in those proteins commonly measured to evaluate protein catabolic losses in patients in acute care. We determined concentrations of iron and iron-binding capacity, transferrin, albumin, prealbumin, and retinol-binding protein in sera from 158 healthy blood donors and 48 hospitalized patients, then grouped the data according to age (by decade) and sex. ...
Introduction. Performance of nonuniformity correction approaches is usually evaluated indirectly, on the basis of remaining tissue intensity variability rather than the actual estimated bias field. Common indirect measures include coefficient of variation of white matter CV(WM) and gray matter CV(GM), and coefficient of joint variation CJV between WM and GM [1]. However, disagreements between i...
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