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Οι ασβεστώσεις του προστάτη, η σχέση τους με την χρόνια προστατίτιδα και η αντιμετώπισή τους. Μια κριτική ανάλυση
No full textWhile prostatic calculi are a common ultrasound finding, their exact prevalence of is not known. It has been reported to vary widely, from 7% to 70% with greater incidences occurring in chronic prostatitis patients. However, pathophysiology, clinical relevance and association of prostatic calculi with prostatic diseases remain unclear. Traditionally they considered to be a random finding of no clinical significance probably associated with chronic infection of the prostate. In fact most cases are found incidentally and they are not accompanied by symptoms. However, prostatic calculi associated with chronic prostatitis may be accompanied by chronic pelvic pain and they have been linked with poorer treatment outcome. The relative literature is limited, while knowledge about their treatment is poor. Therefore, it is necessary for specialists to become familiar with this entity Treatment options include monitoring, medication, and surgery if necessary
Intraprocedural and postprocedural ceus of drug-eluting beads chemoembolization: criteria of prognosis and response
No full textPurpose: To evaluate contrast-enhanced ultrasonography (CEUS) as a tool for the intra- and post-procedural assessment of the effectiveness of transarterial chemoembolization with drug-eluting beads (DEB-TACE). To assess the combination of CEUS with standard response and prognostic criteria.Materials and Methods: 63 patients with 109 target tumors (52 patients with hepatocellular carcinoma-HCC, 9 patients with liver metastases from colorectal cancer, and 2 patients with intrahepatic cholangiocarcinomas-ICC) were studied. They were treated with DEB-TACE, every 5-7 weeks. Imaging follow-up included a standard, contrast-enhanced modality (computed tomography-CT or magnetic resonance-MR) and CEUS. RECIST, mRECIST and EASL criteria of response were applied on appropriate CEUS and CT/MR images. Radiologic response was correlated with overall survival (OS) and progression-free survival (PFS). Results: There was a high degree of concordance between post-procedural CEUS and CT/MR in the evaluation of tumor response according to mRECIST (k=0.84, p<0.001). Responders according to mRECIST-CEUS had a significantly longer mean OS and PFS compared to non responders (37.1 vs 11.0 months, p<0.001 and 24.6 vs 10.9 months, p=0.007, respectively). mRECIST had a higher prognostic value than RECIST. Conclusion: In the context of post-DEB-TACE assessment of liver tumors, the combination CEUS with standard response criteria is feasible and of prognostic value.Σκοπός: Να αξιολογηθεί η υπερηχογραφία με ενισχυτές ηχογένειας (contrast-enhanced ultrasonography, CEUS) σαν μέθοδος διεπεμβατικής και μετεπεμβατικής αξιολόγησης του χημειοεμβολισμού με σφαιρίδια εκλύοντα χημειοθεραπευτικό (transarterial chemoembolization with drug-eluting beads, DEB-TACE). Να αξιολογηθεί ο συνδυασμός CEUS με ευρέως αποδεκτά κριτήρια ανταπόκρισης και πρόγνωσης.Υλικό-Μέθοδος: Μελετήθηκαν 63 ασθενείς, με 109 όγκους-στόχους (52 ασθενείς με ηπατοκυτταρικό καρκίνωμα, 9 ασθενείς με ηπατικές μεταστάσεις, 2 ασθενεις με ενδοηπατικό χολαγγειοκαρκίνωμα), οι οποίοι υπεβλήθησαν σε DEB-TACE ανά 5-7 εβδομάδες. Ο απεικονιστικός έλεγχος συμπεριέλαβε μία δυναμική εξέταση αναφοράς (υπολογιστική ή μαγνητική τομογραφία) και CEUS. Επί των απεικονιστικών ευρημάτων εφαρμόστηκαν τα κριτήρια ανταπόκρισης RECIST, mRECIST and EASL. Η απεικονιστική ανταπόκριση συσχετίστηκε με την συνολική επιβίωση (overall survival, OS) και την επιβίωση ελεύθερη προόδου νόσου (progression-free survival, PFS). Αποτελέσματα: Παρατηρήθηκε υψηλού βαθμού συμφωνία μεταξύ της CEUS και της εξέτασης αναφοράς στην αξιολόγηση της ανταπόκρισης κατά mRECIST (k=0.84, p<0.001). Ασθενείς με ανταπόκριση (κατά mRECIST-CEUS), είχαν σημαντικά μεγαλύτερη OS και PFS σε σύγκριση με τους υπόλοιπους (37.1 vs 11.0 μήνες, p<0.001 και 24.6 vs 10.9 μήνες, p=0.007,αντίστοιχα). Τα κριτήρια mRECIST είχαν υψηλότερη προγνωστική αξία από τα RECIST. Συμπέρασμα: Στο πλαίσιο της αξιολόγησης ηπατικών όγκων μετά DEB-TACE, ο συνδυασμός της CEUS με ευρέως αποδεκτά κριτήρια ανταπόκρισης φαίνεται εφικτός και με προγνωστική αξία
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Get PDFWe 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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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