1,720,972 research outputs found
La tomografia computerizzata nella valutazione del coinvolgimento mediastinico da carcinoma polmonare.
No full textUltrasound and computed tomography in staging of bladder tumours.
No full textEighty-seven patients with proven bladder tumours were retrospectively reviewed with ultrasound (US) and computed tomography (CT), in order to define the stage of the neoplasm. The tumours were divided into three groups with respect to the TNM classification system. Results indicate that US could predict an exact staging of the bladder tumours in 80.6% of cases in the first group (P1), 68.9% of cases in the second group (P2 - P3), and 90.0% of cases in the third group (P4). CT could predict an exact staging in 61.3% of the bladder tumours in the first group, 91.1% in the second group, and 90.0% in the third group. This finding suggests that the capability of US in detecting bladder tumours in stage P1 may avoid the use of CT, while in subsequent stages CT becomes valuable for the evaluation of extravesical invasions and lymph node metastasis
Spinal subarachnoid hematomas: our experience and literature review
No full textSpinal subarachnoid hematomas are unusual and difficult to diagnose and the outcome of treatment is influenced by the lesions that frequently accompany them. To clarify the neuroradiological diagnostic aspects of spinal subarachnoid hematoma as well as the results of treatment. Only recently has subarachnoid hematoma been clearly distinguished from more common subarachnoid hemorrhage and its characteristics have still not been dealt with in detail. METHODS: A total of 69 cases (3 personal case, 66 published cases) were revised in terms of etiology, diagnostic imaging and the results of both surgical and conservative treatment. The most common causes of spinal subarachnoid hematoma are coagulopathies (either pharmacologically-induced or resulting from systemic diseases) (40.5%), lumbar puncture for diagnostic or anesthesiological purposes (44.9%) and traumatic injuries (15.9%): these factors may be present singly or variously combined. They may be spontaneous (17.3%) or, in rare cases, associated with aortic coarctation or degenerative vascular diseases. Overall mortality is 25.7%. In the 50 cases in whom long-term follow-up was possible, the outcome of treatment, which is almost exclusively always surgical, was good in 93.5% of 31 patients in whom neurological status on admission was satisfactory and in 15.8% of 19 cases with severe neurological deficits
[Magnetic resonance of the encephalon in 17 patients with ocular Behçet's disease].
No full textBehçet's disease is a chronic relapsing disorder of unknown etiology characterized by oral aphthous ulcerations, uveitis, genital ulcerations and bone lesions. A variety of other signs including polyarthritis, vascular conditions (blood vessel occlusions and aneurysms), epididymitis, gastrointestinal, pulmonary and heart lesions may also occur. Central nervous system (CNS) involvement is reported in 10-49% of cases and it is the first symptom of the disease in 5% of subjects. The neuro-Behçet's syndrome may appear as a brainstem syndrome, meningoencephalitis and an organic confusional syndrome or dementia. Cranial hypertension, mostly related to cerebral venous thrombosis, is also present in neuro-Behçet's disease and its incidence is reported in up to 10% of Behçet's patients. MRI is reportedly the most sensitive neuroradiologic approach to detect the focal lesions related to neuro-Behçet's disease and several single cases or series of Behçet's patients with neurologic signs have been examined with MRI. We used MRI to investigate CNS involvement in Behçet's disease patients with and without previous neurologic signs. MRI was carried out on 17 patients with ocular Behçet's disease without neurologic symptoms to assess the possible subclinical involvement of the CNS. Cerebrospinal fluid spaces were enlarged in 8 patients and 5 patients exhibited cortical atrophy. PD and T2-weighted hypersignal foci were demonstrated in parietal, frontal, subcortical and periventricular white matter in 6 subjects. Neuroradiologic abnormalities were found only in the patients with complete disease and with the disease diagnosed more than 10 years earlier. Even though the pathogenesis of these neuroradiologic abnormalities and their correlation with Behçet's disease remain to be clarified, our study suggests the possibility of subclinical CNS involvement in these patients, which may affect the therapeutic approach and their prognosis
Previsione di exeresi delle masse mediastiniche in base ai reperti della tomografia computerizzata.
No full text
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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