1,721,001 research outputs found
Correlation Doppler ultrasound index vascular on kidneys, penis, and digital arteries in patient with systemic sclerosis: what obstacles?
Full text linkIt has been known since 1990 and specifically for Systemic Scle-rosis in renal involvement since 1995 the possibility of identifying a variation of the resistivity index during illness.The study on which we want to pay attention shows an innovative and interesting correlation in the possible erectile dysfunction of the penis (ED) in patients with systemic sclerosis (SSc) about Doppler ultrasound indices of penis and kidneys and digital arteries in male with systemic sclerosis (11).Already the authors have reported a limit and an opening to a possible deepening for a study with more extensive case studies and the deepening with the pharmaco stimulation to evaluate veno-occlusive function. We would like to introduce a reflection on these investigations in addition to the problems of concurrent erectile dysfunctions because all the diseases that see an implication of the male genital sphere in primis are generally difficult to investigate for intercurrent psycho-sociological problems (15). Well-explored and well defined is the damage that involves the vascular trophism of the hand and fingers.The article is about five years ago but the argument for the de-licacy and complexity of collecting and correlating the laboratory, imaging data and the evolution of the disease at the level of life in the private sphere has a character of current interest. While we congra-tulate the courage, we think it is important to increase these studies, especially because the SSc is still highly disabling and ED related are poorly understood
Magnetic resonance imaging of the anatomy of the parotid gland
No full textMagnetic Resonance Imaging of the anatomy of the parotid gland.
In this work are been examined the parotid gland of 30 patients (20 male, 10 female) o/ this eighteen voluntary and 12 arrived at our observation /or SNC pathology.
It is been used as a superconductive magnet Philips 'gyroscan' at 1,5 T with head coi! by 35 cm and supeificial and circular coil by 20 cm. The multiplanar scan was executed with TR = 700-2000 ms and TE = 30-90 ms. The RM is been shown very accurate in the anatomic study o/ the parotid gland that appear o/ signal modest hyperintensity in the Tl -weighted images and hyperintense in the T2-weighted images
/or her high contents of water that it is due to the gland part and to the stroma!
fatty tissue. In 90% of the case studied we show the intraparotid way of the facial nerve in every sequence that we used, like a structure hypointense with respect to the neighboring parenchima
Role of imaging in allergic rhinology
No full textRhinitis is an underestimated clinical condition, which has a considerable impact on the quality of life of the affected patients. The subject of this review focuses on three fundamental aspects: the development of knowledge concerning anatomic landmarks, the development of radiological imaging technology, and developments that can make a difference in the treatment of allergic rhinitis. The anatomical study of paranasal sinuses has been conducted since the time of the ancient Egyptians. Development of radiological equipment from the early 1900s has helped to improve information on the morphology of paranasal sinuses, sufficient to be considered valuable information regarding frontal anatomy and its variability. Imaging has become increasingly important in the diagnosis and treatment of inflammatory diseases of the paranasal sinuses. In recent decades, radiology has helped to study this region as we have progressed from plain radiography to high-resolution Computed Tomography (HRCT). Subsequently, from radiologic imaging, digital volume tomography (DVT) has been developed, in high resolution and narrow section width. Currently, experience with third generation Cone-Beam Computed Tomography (CBCT) technologies provides useful information about bones, and it is now possible to highlight anatomical variants that involve bone structures. We still lack the ability to make a qualitative evaluation of soft tissues, as there are no Hounsfield levels in CBCT. However, this is a new area of research, and its application is evolving in an interesting manner, especially for soft-tissue allergic-inflammatory diseases
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
ENT tests for assessing the allergic patient
No full textAllergic rhinitis (AR) is a disease that afflicts a large percentage of the world population. It concerns both allergists and otolaryngologists, therefore it is important for both specialists to be aware of the characteristics of a patient who suffers from AR. Often, patients complain of nasal breathing difficulty only, initially not reporting any other symptoms typical of AR. In this brief review, the most important investigations, physical examination, nasal endoscopy, nasal peak flow and rhinomanometry, are described. All these investigations allow us not only to make the correct diagnosis, but also to monitor the course of the disease and the effects of therapy
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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