1,721,016 research outputs found
Emergency endovascular treatment of sac rupture for type IIIa endoleak in thoracic aortic aneurysm previously excluded with endovascualr repair
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Perioperative Blood Transfusion in Hepatocellular Carcinomas
No full textFor many years liver surgery has been considered major surgery, which has been often associated with a high complication rate. Although evidence suggests that better results are achieved in specialized centers with a high volume of procedures, nevertheless liver resections are now carried out in most of the general surgery divisions. Beside the fact that I still believe that liver surgery should be a field of trained specialists, in editing this book I have attempted to cover for the general surgeon all the main topics of liver surgery and to review the very latest innovative developments. Eminent surgeons from different countries agreed to contribute their own views, opinions and results in the management of primary and secondary liver tumours. The book covers most of the topics which are essential elements in modern liver surgery: applied anatomy of the liver with its radiological demonstration, prognostic indicators and staging systems, portal vein embolization, vascular occlusion, intraoperative ultrasonic guided surgery, different transection techniques. I thought necessary to give space to the radiologists in an effort to outline the extraordinary advances of interventional radiology, which have taken place in recent years. Particular consideration has been given to the aspect of avoiding and managing complications. There are also new specific contributions such as partial hepatectomy after transplantation, genetics of hepatocellular carcinoma, hepatocyte transplantation, and computer-assisted operations. Since the first report of a laparoscopic liver resection, hepatic resection using minimally invasive surgery has become increasingly more common; therefore emphasis has been given to this alternative approach. Recently introduced innovative contributions in liver transplantation are also described
Percutaneous sonographically guided radiofrequency ablation of medium-sized fibroids: feasibility study
No full textOBJECTIVE. The purpose of this study was to assess the feasibility and safety of percutaneous radiofrequency ablation under sonographic guidance as a unique procedure in the management of symptomatic uterine myomas.
SUBJECTS AND METHODS. Six premenopausal women with symptomatic submucosal or intramural uterine myomas underwent percutaneous radiofrequency ablation under suprapubic sonographic guidance. Relief of symptoms and reduction in the diameter and volume of the myomas were measured every 3 months.
RESULTS. The location of myomas was anterior and submucosal in one of the six patients and intramural in the other five (one posterior, one anterior, two fundal, and one on the left side). Five of the patients had pelvic pain, and four had menorrhagia. The median baseline diameter was 4.8 cm (range, 4.4 - 5.2 cm), and the mean volume was 58.57 cm(3) (range, 44.58 - 73.58 cm(3)). The mean follow-up time was 9 months (range, 3 - 12 months). At follow-up, the median diameter was 2.3 cm (range, 1.20 - 3.2 cm), and the median volume was 8.97 cm(3) (range, 0.90 - 18.81 cm(3)). The median preoperative symptom score was 47.2 ( 31.8 - 67.30), and the median health-related quality of life (QOL) score was 63.92 (37.20 - 86.00). The median symptom score during follow-up was 5.15 (range, 0 - 26), and the mean QOL score was 96.2 (range, 86.30 - 100). Four of six patients were symptom-free at the last follow-up visit.
CONCLUSION. Percutaneous sonographically guided radiofrequency ablation alone is a feasible and efficient procedure in the management of medium-sized uterine myomas
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
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