1,720,964 research outputs found
On the antiquity of Legg–Calvé–Perthes disease: Skeletal evidence in Iron Age Italy
No full textLa malattia di Legg–Calvé–Perthes è molto rara e comporta, nel bambino,un’osteocondrosi della testa femorale causata da una interruzione della vascolarizzazione.L’eziologia è sconosciuta. I segni tipici della patologia sono ben descritti in letteratura, mapochi casi paleopatologici – risalenti generalmente al periodo compreso tra la Tarda anti-chità e l’Alto Medioevo- sono stati finora pubblicati. Nel presente studio vengono descrittii risultati ottenuti attraverso le analisi morfo-metriche e radiologiche eseguite su unoscheletro proveniente dalla necropoli etrusca di Spina (Ferrara, Italia, VI–III secolo a.C.)che rappresenta, per quanto a nostra conoscenza, il più antico caso di Legg–Calvé–Perthespubblicato finora.Legg–Calvé–Perthes is a very rare disease involving childhood osteochondrosis of the femoral head due to interruption of its blood supply. The etiology is unknown. The signs of the pathology are well described in the literature but few paleopathological cases have been reported, mostly dating from Late Antiquity to Early Middle Ages. Here we report on morphometric and radiological analyses of a skeleton from the Etruscan necropolis of Spina (Ferrara, Italy, 6th–3rd century BCE), to our knowledge the most ancient case of Legg–Calvé–Perthes disease published thus far
Subcapsular Hepatic Hematoma: A Complication of Hellp Syndrome. Conservative Management and Comparison with Literature
No full textMicroangiopathic hemolytic anemia, elevated liver enzymes and low platelet count, also known as HELLP syndrome, is a rare complication of pregnancy with high maternal and fetal mortality. One of the most serious complications is a subcapsular liver hematoma. The diagnostic techniques used for diagnosis are ultrasound, CT and MRI. Hemodynamically stable patients should be treated conservatively and in cases of active bleeding with percutaneous embolization of the hepatic arteries. We present a case of a 35-year-old woman with subcapsular liver hematoma with active arterial bleeding who underwent an emergency cesarean section and was treated conservatively with artery embolization with gelatin sponge
Computed tomographic colonography in the evaluation of a case of giant colonic diverticulum
No full textThe aim of this article was to present our experience with CT-colonography evaluation of a case of giant colonic diverticulum. Despite the high prevalence of diverticular disease in the Western world, giant colonic diverticula are rare entities, with fewer than 200 cases reported in literature
Case Report: Endovascular Approach for Iatrogenic Artery Damage in Covid-19 Pandemic Era
No full textSince February, the Italian sanitary system and his healthcare workers are facing COVID-19 pandemic; however, some Operative Units (such as Interventional Radiology and Vascular Surgery) appear to have higher contagion risk, because of the closer contact, needed by their specialty, with the patient and for the invasive operations needed for patient’s treatment.
This is more and more making mandatory the needing to develop and use new guidelines to decrease contagion risk. In this case report we describe our experience in a case of intervention for the treatment of an active bleeding in a COVID-19 positive patient
Anthracycline cardiotoxicity in non-Hodgkin’s lymphoma mediastinal mass: A case report
No full textAnthracycline is often used for treatment of hematologic malignancies and solid tumors, and the damage it causes to the heart muscle has long been known; therefore, the cardiac toxicity, one of the treatment-related co-morbidities, has become an issue for cancer survivors. Cardiotoxicity has been defined using various classifications. In this paper we report the case of a man affected by follicular non-Hodgkin’s lymphoma, which was first diagnosed in 2006 and had a second recurrence in 2012 with a mediastinal mass: the patient was subjected to a new cycle of chemotherapy with anthracycline, the follow-up exam showed a significant reduction of the mass, but the clinical condition worsened and the ejection fraction of the left ventricle had a progressive reduction, as seen in the cardiac-MRI test. Then, it was decided to discontinue therapy with anthracycline, resulting in a clear recovery of systolic function of the left ventricle, as seen in the following echocardiogram
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
- …
