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Indicazioni alla T.C. del mediastino. Confronto comparativo tra radiologia convenzionale e tomografia computerizzata
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[16-MDCT angiography coronary artery in the emergency department for patients with acute coronary syndrome (NSTEMI-UA)].
No full textThe diagnosis of acute coronary syndrome (ACS), non-ST-elevation myocardial infarction and unstable angina in the emergency department (ED) remains a challenge. The aim of our study was to investigate quality and the diagnostic accuracy of 16-MDCT coronary angiography, detecting coronary artery lesions in patients with suspected ACS presented in ED.We studied with 16-MDCT (Sensation 16, Siemens, Forchleim, Germania) and coronary angiography 37 patients with the following inclusion criteria: chest pain compatible with myocardial ischemia, normal or no-diagnostic ECG changes and initial concentrations of serum troponin-I 50\% and correctly ruled out significant coronary artery disease in 19 patients with 1 FP and 2 FN: sensitivity 88\%, specificity 95\%, PPV 94\%, NPV 90\%. The plaques were hard in 6 cases, mixt in 16 cases and soft in 14 cases, respectively.Our results point-out that 16-MDCT in ED has the real ability to detect and rule out significant coronary stenoses in patients with ACS
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
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