2,259 research outputs found
Dynamic anatomic relationship of coronary arteries to the valves. Part 2: tricuspid annulus and right coronary artery
No full textThe Reproducibility of Lists of Differentially Expressed Genes in Microarray Studies
No full textReproducibility is a fundamental requirement in scientific experiments and clinical contexts. Recent publications raise concerns about the reliability of microarray technology because of the apparent lack of agreement between lists of differentially expressed genes (DEGs). In this study we demonstrate that (1) such discordance may stem from ranking and selecting DEGs solely by statistical significance (P) derived from widely used simple t-tests; (2) when fold change (FC) is used as the ranking criterion, the lists become much more reproducible, especially when fewer genes are selected; and (3) the instability of short DEG lists based on P cutoffs is an expected mathematical consequence of the high variability of the t-values. We recommend the use of FC ranking plus a non-stringent P cutoff as a baseline practice in order to generate more reproducible DEG lists. The FC criterion enhances reproducibility while the P criterion balances sensitivity and specificity
Dynamic anatomic relationship of the coronary arteries to the valves. Part 1: mitral annulus and circumflex artery
No full textPre-procedural CT angiography inferior vena cava measurements: a predictor of mortality in patients undergoing transcatheter aortic valve implantation
No full textReproducibility of aortic valve calcification scoring with computed tomography - An interplatform analysis
No full textQuantification of aortic valve calcification on contrast-enhanced CT of patients prior to transcatheter aortic valve implantation
No full textValue of CT signs and measurements as a predictor of pulmonary hypertension and mortality in symptomatic severe aortic valve stenosis
No full textSingle-Center Experience With Catheter-Based Tricuspid Valve Replacement for Tricuspid Regurgitation: Procedural and Echocardiographic Findings
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