1,721,026 research outputs found
Reply to Egesta Lopci, Arturo Chiti, and Massimo Lazzeri's Letter to the Editor re: Laura Evangelista, Alberto Briganti, Stefano Fanti, et al. New Clinical Indications for18F/11C-choline, New Tracers for Positron Emission Tomography and a Promising Hybrid Device for Prostate Cancer Staging: A Systematic Review of the Literature. Eur Urol 2016;70:161â75
No full textImaging biomarkers in ovarian cancer: the role of 18F-FDG PET/CT
No full textOvarian cancer represents one of the major form of cancer in women in the western world and its silent nature leads to a late clinical manifestation at advanced stage in many patients. Therefore the role of imaging techniques is very important for the correct management of these patients. In the present review, the role of 18F-FDG-PET/CT in the different clinical settings is presented and a comparison with other imaging modalities and serum biomarker CA-125 are discussed.Ovarian cancer represents one of the major form of cancer in women in the western world and its silent nature leads to a late clinical manifestation at advanced stage in many patients. Therefore the role of imaging techniques is very important for the correct management of these patients. In the present review, the role of 18F-FDG-PET/CT in the different clinical settings is presented and a comparison with other imaging modalities and serum biomarker CA-125 are discussed
Re: Daniel E. Spratt, Herbert A. Vargas, Zachary S. Zumsteg, et al. Patterns of Lymph Node Failure after Dose-escalated Radiotherapy: Implications for Extended Pelvic Lymph Node Coverage. Eur Urol 2017;71;37â43: High-dose Radiotherapy and Pelvic Lymph Nodal Irradiation for High-risk Prostate Cancer in the Image-guided Radiotherapy Era
No full textPET imaging for lymph node dissection in prostate cancer
No full textThe detection of neoplastic lymph nodal involvement in prostate cancer (PCa) patients has relevant therapeutic and prognostic significance, both in the clinical settings of primary staging and restaging. Lymph nodal dissection (LND) currently represents the gold standard for evaluating the presence of lymph nodal involvement. However, this procedure is invasive, associated with morbidity, and may fail in detecting all potential lymph nodal metastatic regions. Currently the criteria for lymph nodal detection using conventional imaging techniques mainly rely on morphological assessment with unsatisfactory diagnostic accuracy. Positron emission tomography (PET) represents a helpful imaging technique for a proper staging of lymph nodal status. The most investigated PET radiotracer is choline, although many others have been explored as guide for both primary and salvage LND, such as fluorodeoxyglucose, acetate, fluorocyclobutanecarboxylic acid and prostate-specific membrane antigen. In the present review, a comprehensive literature review addressing the role of PET for LND in PCa patients is reported, with the use of the above-mentioned radiotracers
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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