8 research outputs found

    MÉTODO COMPUTACIONAL PARA MEDIÇÃO AUTOMÁTICA DO DIÂMETRO LIMBAR

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    The measurement of the limbus diameter in millimeters isuseful for ophthalmologists in various tests, such as thosethat enable the detection of congenital glaucoma. Some examsrequire the patient to interact with the doctor, providinginformation during the exam. Patients who cannotcollaborate, such as children aged 0-3, need to be sedatedto allow the specialist to check the diameter of the limbus.This measurement is not always accurate, because in medicalpractice it is common to use a ruler close to the eye to gaugethe diameter of the limbus. In this context, it is appropriateto develop a computational solution that avoids the useof invasive techniques in patients, also avoiding the need tosedate them for such examinations, as well as improving theaccuracy of the measurement. In this work, a computationalmethod is proposed for the automatic detection of limbus inpatient images and for the calculation of its diameter in millimeters.The results obtained by the developed method arecompatible with the values obtained by the manual measurementmethod. The performance obtained by the developedtechnique indicates that the proposed methodology has potentialfor application in ophthalmic officés.A medida em milı́metros do diâmetro do limbo é útil para os médicos oftalmologistas em diversos exames, como os que possibilitam a detecção do glaucoma congênito. Alguns exames precisam que o paciente interaja com o médico, fornecendo informações durante a realização do exame. Os pacientes que não podem colaborar, como crianças de 0 a 3 anos, precisam ser sedados para permitir que o especialista verifique o diâmetro do limbo. Esta medida nem sempre é precisa, pois na prática médica, é comum a utilização de uma régua próxima ao olho para aferir o diâmetro do limbo. Neste contexto, faz-se oportuno o desenvolvimento de uma solução computacional que evite a utilização de técnicas invasivas nos pacientes, evitando também a necessidade de sedá-los para a realização de tais exames, assim como melhorando a precisão da medida. Neste trabalho, é proposto um método computacional para a detecção automática do limbo em imagens de pacientes e para o cálculo do seu diâmetro em milı́metros. Os resultados obtidos através do método desenvolvido são compatı́veis com os valores obtidos pelo método manual de medição. O desempenho obtido pela técnica desenvolvida indica que a metodologia proposta tem potencial de aplicação em consultórios oftalmológicos

    Sutura de tração permanente para tratamento de paralisia congênita de III nervo

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    Resumo A paralisia do terceiro nervo craniano representa o estrabismo paralítico de tratamento mais complexo e desafiador. Os casos de paralisia completa III par incitam o uso de certas técnicas de cirurgia de estrabismo destinadas a manter o olho voltado para a posição primária do olhar (PPO). Entretanto, as possibilidades terapêuticas são limitadas e complexas e o tratamento cirúrgico tende a hipocorreção e recorrências frequentes a longo prazo.O envolvimento completo e congênito do terceiro nervo craniano requer cirurgias para a exotropia, hipotropia e ptose.Dentre as técnicas cirúrgicas já descritas, optou-se pela realização de uma modificação da técnica cirúrgica de recuo-ressecção, que deu-se em único tempo cirúrgico, sendo suficiente para alcançar o objetivo estético. Este trabalho relata o resultado positivoda manutenção de sutura de tração à carúncula para tratamento cirúrgico de estrabismo paralítico congênito de nervo oculomotor de longa data

    Supplementary Material for: Enhancing LGPD Compliance: Evaluating a Checklist for Assessing Software Systems' Adherence to LGPD Quality Attributes within a Government Office

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    The objective of establishing the Brazilian General Data Protection Law (LGPD) was to introduce regulations for organizations regarding the collection, transmission, and storage of individuals' personal data. However, understanding the LGPD poses a significant challenge for requirements analysts, particularly in extracting and operationalizing privacy requirements. This study proposes to assess and enhance an existing checklist known as LGPD-Check, which serves as a method for evaluating software systems' compliance with the quality attributes specified by the LGPD. The assessment checklist consists of different attributes distributed among several evaluation categories, including data transparency, data subject's consent, data subject's rights, data security, and controller's responsibility. To evaluate the checklist's effectiveness, it was applied within a government office, examining various web applications, followed by a survey involving eight IT professionals. Preliminary findings indicate that the current version of the checklist facilitates the identification of issues related to software systems' compliance with the LGPD. However, as the evaluation was limited to a single office, the findings lack generalizability. Therefore, replication studies are necessary to determine whether these outcomes hold true across diverse organizations and solutions.LGPD-Chec

    Brazilian Flora 2020: Leveraging the power of a collaborative scientific network

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    International audienceThe shortage of reliable primary taxonomic data limits the description of biological taxa and the understanding of biodiversity patterns and processes, complicating biogeographical, ecological, and evolutionary studies. This deficit creates a significant taxonomic impediment to biodiversity research and conservation planning. The taxonomic impediment and the biodiversity crisis are widely recognized, highlighting the urgent need for reliable taxonomic data. Over the past decade, numerous countries worldwide have devoted considerable effort to Target 1 of the Global Strategy for Plant Conservation (GSPC), which called for the preparation of a working list of all known plant species by 2010 and an online world Flora by 2020. Brazil is a megadiverse country, home to more of the world's known plant species than any other country. Despite that, Flora Brasiliensis, concluded in 1906, was the last comprehensive treatment of the Brazilian flora. The lack of accurate estimates of the number of species of algae, fungi, and plants occurring in Brazil contributes to the prevailing taxonomic impediment and delays progress towards the GSPC targets. Over the past 12 years, a legion of taxonomists motivated to meet Target 1 of the GSPC, worked together to gather and integrate knowledge on the algal, plant, and fungal diversity of Brazil. Overall, a team of about 980 taxonomists joined efforts in a highly collaborative project that used cybertaxonomy to prepare an updated Flora of Brazil, showing the power of scientific collaboration to reach ambitious goals. This paper presents an overview of the Brazilian Flora 2020 and provides taxonomic and spatial updates on the algae, fungi, and plants found in one of the world's most biodiverse countries. We further identify collection gaps and summarize future goals that extend beyond 2020. Our results show that Brazil is home to 46,975 native species of algae, fungi, and plants, of which 19,669 are endemic to the country. The data compiled to date suggests that the Atlantic Rainforest might be the most diverse Brazilian domain for all plant groups except gymnosperms, which are most diverse in the Amazon. However, scientific knowledge of Brazilian diversity is still unequally distributed, with the Atlantic Rainforest and the Cerrado being the most intensively sampled and studied biomes in the country. In times of “scientific reductionism”, with botanical and mycological sciences suffering pervasive depreciation in recent decades, the first online Flora of Brazil 2020 significantly enhanced the quality and quantity of taxonomic data available for algae, fungi, and plants from Brazil. This project also made all the information freely available online, providing a firm foundation for future research and for the management, conservation, and sustainable use of the Brazilian funga and flora
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