1,720,964 research outputs found
Esame clinico e radiologico (ECO_TC) del collo nei pazienti oncologici del distretto testa-collo
No full textIl ruolo dell'head shaking nella terapia della vertigine posizionale persistente e recidivante
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Role of US and CT in detection of neck metastases of squamous cell carcinomas
No full textObjective: To optimize the selection of patients eligible for surgical neck treatment optimizing a diagnostic routine to identify neck metastases. Methods: Comparison between sensibility, specificity and diag- nostic accuracy of clinical examination, echography (US), com- puted tomography (CT) in detection of cervical metastases in 53 patients with carcinoma of the upper aerodigestive tract.
Results: Clinical examination: sensibility 82.1%, specificity 80%, diagnostic accuracy 81.1%—US with a cut off point for minimal adenopathy diameter of 0.5 cm sensibility 92.8%, specificity 77.3%, diagnostic accuracy 77.3%—US with a cut off point of 1 cm sensibility 82.1%, specificity 80%, diagnostic accuracy 81.1%—US with a cut off point of 1 cm, also considering round shape of multiplicity of the adenopathy: sensibility 82.1%, speci- ficity 80%, diagnostic accuracy 81.1%—CT with cut off point 0.5 cm: sensibility 92.8%, specificity 32%, diagnostic accuracy 64.1%—CT with cut off point 1 cm: sensibility 85.7%, specificity 64%, diagnostic accuracy 75.4%—CT with cut off point 1 cm, also considering central necrosis, extracapsular spread, multi- plicity of adenopathy: sensibility 89.2%, specificity 60%, diag- nostic accuracy 75.5%.
Conclusions: (a) A neck positive to palpation must be submitted to neck dissection (81.1% possibility of having a metastases); (b) a neck negative to palpation must be further investigated using the US and CT cut off point of 1 cm; (c) the combined use of US and TC does not offer remarkable advantages in detection of metastases
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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