1,720,959 research outputs found
Type IV dual left anterior descending coronary artery evaluated using multislice computed tomography: Anatomy of a rare coronary anomaly
No full textImages in cardiovascular medicine
Type IV dual left anterior descending coronary
artery evaluated using multislice computed
tomography: anatomy of a rare coronary
anomal
Calcificazioni coronariche in una popolazione di donne in post-menopausa affette da sindrome metabolica
No full textBackground. The aim of this study was to evaluate the burden of coronary calcifications in a subgroup of post-menopausal women with metabolic syndrome (MS) in agreement with the National Cholesterol Educational Program-Third Report of the Expert Panel on Detection, Evaluation, and Treatment of High Blood Cholesterol in Adults (NCEP-ATP III) definition. Methods. We studied 81 women (43 control subjects and 38 women with MS) in agreement with the NCEP-ATP III definition undergoing multislice computed tomography for evaluation of coronary calcifications. The patients were similar for Framingham risk score. Results. The severity and extent of coronary artery calcifications were higher in individuals with MS (10.8 ± 15.8 vs 3.02 ± 5.6; p = 0.006). In all patients total cholesterol, low-density lipoproteins and triglycerides were correlated with calcium score (p <0.05) while high-density lipoproteins were inversely correlated with coronary calcifications. In women with MS total cholesterol and low-density iipoprotein cholesterol were correlated with calcium score. Conclusions. Women with MS have a higher burden of subclinical coronary atherosclerosis. The correlation between MS and calcium score concerned more the presence rather than the severity of coronary calcifications. Moreover, no correlation was observed among single components of MS in agreement with the NCEP-ATP III definition. © 2007 AIM Publishing Srl
Calcificazioni arteriose mammarie e calcificazioni coronariche: Un "link" comune con la malattia aterosclerotica subclinica?
No full textCoronary artery calcifications seem to be correlated with a high risk of coronary heart disease. Computed tomography has been shown to be capable of providing accurate, non-invasive measurements of coronary artery calcifications. Coronary calcium is a recognized marker of atherosclerosis. Atherosclerotic burden of coronary arteries correlates strongly with the amount of coronary artery calcifications measured by computed tomography. The presence and extent of breast arterial calcifications detected at mammography has been associated with diabetes and hypertension and it seems to be correlated with the extent of coronary atherosclerosis. This review analyzes the relationship between coronary artery calcifications, breast arterial calcifications and the increased risk of subsequent cardiovascular events. © 2005 CEPI Srl
Il calcio coronarico come marker precoce di aterosclerosi
No full textNon-invasive diagnostic techniques such as electron beam computed tomography and multislice spiral computed tomography are able to detect and quantify coronary calcifications. Several clinical studies have shown how the amount of coronary calcifications correlates to the coronary plaque burden. The detection of coronary calcium therefore provides a unique opportunity to identify and quantify coronary atherosclerosis in a subclinical stage. Measures of subclinical atherosclerosis may also help in recognizing factors related to atherosclerosis in asymptomatic populations. In addition, a significant proportion of subjects who develop premature clinical disease are not identified as being at high risk by current strategies. A scan negative for coronary calcium has a high negative predictive value indicating the absence of stenotic coronary artery disease. The aim of this review was to describe the potentials of coronary calcium detection and to summarize its clinical relevance. © 2005 CEPI Srl
Metabolic syndrome and psychiatric comorbidity: the Modena protocol
No full textMetabolic syndrome and psychiatric comorbidity: the Modena protoco
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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