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Endovascular Treatment of Pulmonary and Cerebral Arteriovenous Malformations in Patients Affected by Hereditary Haemorrhagic Teleangiectasia
No full textGlue Embolization in the Management of Rectus Sheath Hematomas
No full textobjective this study aims to describe the results achieved in the management of rectus sheath hematoma (RSH) using glue embolization. method data about all consecutive patients presenting with RSH, between January 2005 and december 2020 were retrospectively reviewed. RSHs were classified according to the berna CT scan classification. clinical and technical outcomes were evaluated during in-hospital period and 1-month follow-up. results among 74 patients presenting with RSH, CTA revealed an active bleeding in 61 (n = 42, 69% women; median age = 68.8 y range: 47-91). 19 cases of type 1 RSH (25.7%), under anticoagulation therapy and hemodynamically stable, were successfully managed conservatively. conversely, endovascular embolization with cyanoacrylate glue diluted with ethiodized oil (lipiodol ultrafluid, guerbet, france) was needed in n = 42 (56.8%) patients, in 16 cases after failure of conservative management; a single session of percutaneous glue embolization was adequate to achieve technical and clinical success in all patients with stabilization or progressive improvement of hemoglobin values after procedure (7.1 + 1.8 g/dL pre-procedure vs 11.1 + 1.6 g/dL post-procedure). no major complications occurred. Two minor complications were reported: 1 case (2.4%) of puncture site-related complication (local self-limiting hematoma) and 1 case (2.4%) of post-embolization syndrome (abdominal pain) spontaneously regressive. the median hospital stay was 7 d. at 30-day follow-up, 2 patients (2.7%) died of multiorgan failure. conclusions In the management of RSH, glue embolization was shown to be safe and efficacious. glue allowed the immediate occlusion of both the "front and back doors" of bleeding without the need to reach the bleeding point, preventing potentially life-threatening recurrence
Analytic morphometry of cerebral ventricular system on RM in patients with cerebral atrophy
No full text
Fetal magnetic resonance studies: 5-year experience [La RM fetale: Esperienza di 5 anni]
No full textRescue Stenting Using Neuroform Atlas Stent During Coiling Protrusion for Ruptured Intracranial Aneurysms
No full text- BACKGROUND: Endovascular coiling is generally
considered as an effective treatment option for ruptured
intracranial aneurysms. Increasing operator experience
and quality of tools determined an improvement of endovascular
cerebral aneurysms’ treatment. However,
procedure-related complications still occur.
The purpose of this study is to report a series of rescue
stenting procedures with the Neuroform Atlas (NA) opencell
stent, for intraprocedural complications during coil
embolization in patients with ruptured intracranial
aneurysms.
- METHODS: Between April 2016 and January 2018, 12
consecutive coil protrusions that occurred during ruptured
aneurysms’ embolizations were rescued using NA stenting
together with tirofiban therapy.
Follow-up was performed with initial magnetic resonance
angiography (MRA) at 1 month and then MRA plus
standard digital subtraction angiography at 11e13 months
after the procedure.
- RESULTS: Technical success was achieved in 100% of
patients. No NA stent delivery/deployment complication
occurred. Initial MRA showed complete occlusion of the
aneurysm, with evidence of blood flow into parent vessels
in 12 out of 12 cases.
At 11e13 months, MRA and digital subtraction angiography
showed 10 complete occlusion cases and 1 partial
occlusion case. At 2 months, 1 death occurred due to
subarachnoid hemorrhage.
-CONCLUSIONS: The open-cell NA stent represents a
rescue option for coil protrusion during endovascular
treatment of ruptured intracranial aneurysms allowing
regular restoration of blood flow and minimizing thromboembolic
events
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
Reliability of positive diagnosis of pulmonary arteriovenous malformations (PAVMS) with CT multicycle amn echo-bubble compared to angyography: preliminary results
No full textVariations 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
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