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Search Results: 1 - 10 of 563632 matches for " Paulo M. de Azevedo;Elias Jr "
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Radiological reports: a comparison between the transmission efficiency of information in free text and in structured reports
Barbosa, Flavio;Maciel, Lea Maria Zanini;Vieira, Elizabeth Melmi;Marques, Paulo M. de Azevedo;Elias Jr, Jorge;Muglia, Valdair Francisco;
Clinics , 2010, DOI: 10.1590/S1807-59322010000100004
Abstract: introduction: this work proposes to improve the transmission of information between requiring physicians and radiologists. objectives: evaluate the implementation of a structured report (sr) in a university hospital. methods: a model of a structured report for thyroid sonography was developed according to information gathered from radiologists and endocrinologists working in this field. the report was based on a web platform and installed as a part of a radiological information system (ris) and a hospital information system (his). the time for the report generation under the two forms was evaluated over a four-month period, two months for each method. after this period, radiologists and requiring physicians were questioned about the two methods of reporting. results: for free text, 98 sonograms were reported to have thyroids with nodules in an average time of 8.71 (+/-4.11) minutes, and 59 sonograms of thyroids without nodules were reported in an average time of 4.54 (+/- 3.97) minutes. for sr, 73 sonograms in an average time of 6.08 (+/-3.8) minutes for thyroids with nodules and 3.67 (+/-2.51) minutes for thyroids without nodules. most of the radiologists (76.2%) preferred the sr, as originally created or with suggested changes. among endocrinologists, 80% preferred the sr. discussion: from the requiring physicians' perspective, the sr enabled standardization and improved information transmission. this information is valuable because physicians need reports prepared by radiologists. conclusions: the implementation of a sr in a university hospital, under an ris/his system, was viable. radiologists and endocrinologists preferred the sr when compared to free text, and both agreed that the former improved the transmission of information.
Caracteriza??o de les?es intersticiais de pulm?o em radiograma de tórax utilizando análise local de textura
Martins, Elias Ribeiro da Silva;Azevedo-Marques, Paulo Mazzoncini de;Oliveira, Lucas Ferrari de;Pereira Jr., Roberto Rodrigues;Trad, Clóvis Sim?o;
Radiologia Brasileira , 2005, DOI: 10.1590/S0100-39842005000600008
Abstract: objective: to characterize interstitial lesions in anterior-posterior chest x-rays based on the analysis of textural statistical features that allow the detection of abnormalities with diffuse pattern. materials and methods: image analysis begins with the semiautomatic segmentation of the lungs, marking the external contour of the lung manually followed by an automatic division of each lung in six regions. the data base of images used in this study consisted of 482 regions obtained from examinations in which lesions were detected and 324 regions from normal examinations. textural features were automatically extracted from each area and the selection of the best set of features was made based on the jeffries-matusita distance. the regions were classified as normal or suspected using the k nearest-neighbor method and half-half, and cross-correlation methodologies were used for training the classifier. results: results were assessed based on the value of the area under the roc (receiver operating characteristic) curve that indicates an ideal response for an area equal to 1. the results showed an area under the roc curve (az) of 0.887, sensitivity of 0.804, and specificity of 0.793. conclusion: these results indicate that the implemented system has a good potential for computer-aided diagnosis of interstitial lung lesions.
Analysis of Tracheal Secretion in Healthy Horses Undergoing a Vaquejada Simulation Test  [PDF]
Natália Matos Souza Azevedo, Márlon de Vasconcelos Azevedo, Paulo Fernandes de Lima, Hélio Cordeiro Manso Filho
Open Journal of Veterinary Medicine (OJVM) , 2014, DOI: 10.4236/ojvm.2014.410027
Abstract: This study aimed to evaluate the occurrence of EIPH in vaquejada horses via endoscopy and tracheal lavage and citology. We used eight Quarter-mile horses that usually perform at vaquejadas. Clinical examination was carried out before the race. After the race, endoscopy and tracheal lavage with 20 ml of saline via the service channel of the endoscope were performed. The samples were sent to the laboratory for processing and confection of the slides. Of the eight horses (four pull and four helper horses), six had hemosiderophages in their tracheal aspirates, confirming the existence of pulmonary hemorrhage after exercise. No difference was observed between the analyzed parameters between the two groups of vaquejada horses (P > 0.05). Tracheal lavage and endoscopy can be used for evaluating this important disease in animal athletes.
Computational Environment for Radiology and Image-Diagnosis Teaching: A Proposal Using Systems Methodology
Marília Guimar?es Pinheiro,Luis Ricardo Figueiredo,Paulo Mazzonccini Azevedo-Marques,Jorge Elias-Jr
International Journal of Emerging Technologies in Learning (iJET) , 2009, DOI: 10.3991/ijet.v4i1.651
Abstract: Defining a computational environment for radiology and image-diagnosis education requires the development of a model that covers the resident doctor’s training necessities and creates the mechanisms necessary for the construction of this environment, especially integrating the various systems in use or in development, in a hospital school. This work presents a proposal to define strategies for the creation of a computational environment for radiology and image-diagnosis teaching, specifically aimed towards the education of the resident physician in this area. The Soft Systems Methodology (SSM) was used to elaborate a comprehensive model under a systemic focus and bring up actions for its implementation. Initially, the current radiology teaching structure will be contextualized, and information systems that could be applied to support this type of activity will be discussed. The next step will be the revision of the SSM and the application of each step proposed by this methodology within the medical residency context of a large Brazilian hospital school. This residency-education activity survey was performed through interviews, questionnaires and the review of the norms, criteria and minimum requirements for the accreditation of medical residency programs in Brazil. Considering the complexity of the doctor-training environment and the diversity of computer systems under development to support it, the systemic approach helps the understanding and can guide the necessary integration. An integrated-environment frame, and its action plan, is proposed for radiology and image-diagnosis teaching. Finally, the strategies identified for its implementation are discussed.
Implanta??o de um mini-pacs (sistema de arquivamento e distribui??o de imagens) em hospital universitário
Azevedo-Marques, Paulo Mazzoncini de;Trad, Clóvis Sim?o;Elias Júnior, Jorge;Santos, Antonio Carlos;
Radiologia Brasileira , 2001, DOI: 10.1590/S0100-39842001000400009
Abstract: this paper describes the implementation of a mini-pacs (picture archiving and communication system) at a university hospital ("hospital das clínicas da faculdade de medicina de ribeir?o preto da universidade de s?o paulo"), as a component of a project for a filmless radiology facility.
Implanta o de um mini-pacs (sistema de arquivamento e distribui o de imagens) em hospital universitário
Azevedo-Marques Paulo Mazzoncini de,Trad Clóvis Sim?o,Elias Júnior Jorge,Santos Antonio Carlos
Radiologia Brasileira , 2001,
Abstract: Este trabalho apresenta a implementa o de um mini-PACS (sistema de arquivamento e comunica o de imagens) que está sendo estruturado junto ao Servi o de Radiodiagnóstico do Hospital das Clínicas da Faculdade de Medicina de Ribeir o Preto da Universidade de S o Paulo, como parte do projeto de um servi o de radiologia digital ("filmless").
Renal Function after Major Uro-Oncologic Surgery and Dexmedetomidine Infusion  [PDF]
Marcus Vinicius M. Novaes, Paulo Sergio G. Lavinas, Grace Haber D. Pires, Ana Claudia G. de Carvalho, Renata M. B. Lopes, Regina El Dib, Paulo do Nascimento Jr.
Open Journal of Anesthesiology (OJAnes) , 2013, DOI: 10.4236/ojanes.2013.38076
Abstract:

Objective: Acute kidney injury in major surgery is associated with increased postoperative mortality. This study aimed to evaluate renal function after major urologic surgery and intraoperative dexmedetomidine infusion. Methods: Thirty oncologic patients with normal renal function scheduled for prostatectomy or nephrectomy, anesthetized with combined epidural and general anesthesia, were randomized to receive either intraoperative blind infusion of dexmedetomidine (Dexmedetomidine Group, n = 15, 0.5 μg/kg load dose plus 0.7 μg/kg/h) or 0.9% saline (Control Group, n = 15) until the end of surgery. Intraoperative and cumulative 24-hour diuresis, serum creatinine (SCr), calculated creatinine clearance (ClCr) and serum cystatin C (SCys) at postoperative days 1, 2 and 3 and 2 weeks after surgery were evaluated. Results: Mean ± standard deviation values for intraoperative diuresis in Dexmedetomidine and Control Groups were 566 ± 396 mL and 298 ± 153 mL, respectively (p = 0.014). Cumulative 24-hour diuresis in Dexmedetomidine and Control Groups was 1947 ± 266 mL and 1748 ± 237 mL, respectively (p = 0.91). Mean values of SCr, ClCr and SCys were not

Otimiza??o da dose em exames de rotina em tomografia computadorizada: estudo de viabilidade em um Hospital Universitário
Dalmazo, Juciléia;Elias Júnior, Jorge;Brocchi, Marco Aurélio Corte;Costa, Paulo Roberto;Azevedo-Marques, Paulo Mazzoncini de;
Radiologia Brasileira , 2010, DOI: 10.1590/S0100-39842010000400008
Abstract: objective: to study the feasibility of reducing radiation dose in protocols for acquisition of helical computed tomography images in a university hospital. materials and methods: a survey of radiation doses in computed tomography protocols was performed with phantoms and ionization chamber. changes in kvp and mas were proposed, determining the average noise. protocols with noise values 1% were submitted to qualitative assessment of contrast and spatial resolution by three observers. results: tests of variations were performed with 22 protocols for pediatric skulls, 26 for adult skulls, 28 for abdomen, and 18 for chest. the reduction in dose achieved ranged between 7.4% and13% for pediatric skull, 3.8% and 25% for adult skull, 9.6% and 34.3% for abdomen, 6.4% and 12% for chest. it was also noted that the use of windowing and zoom tools supported the acceptance of images by the observers. conclusion: radiation dose levels can be reduced by up to 34.4% in comparison with routine protocols, keeping the noise at acceptable levels. the use of digital manipulation tools allowed the acceptance of images with higher noise levels, thus resulting in radiation dose reduction.
Resultados de los primeros casos de craneoplastia con tela de titanio y colgajo galeal bipediculado postraumatismo craneano Resultados dos primeiros casos da cranioplastia com tela de titanio e retalho galeal bipediculado pós-trauma cranio-encefálico Results of first cases of craneoplasty with titanium mesh and galeal bipediculated flap after craneal trauma
L. Dos Santos Fonseca,H. Cirne Azevedo Jr.,M.A. Amorim de Paiva Jr.,O. Batista Becerra
Cirugía Plástica Ibero-Latinoamericana , 2010,
Abstract: La causa más frecuente de una solución de continuidad de los huesos de la calota craneana es un traumatismo craneoencefálico grave. La reparación de la misma es lo que conocemos como craneoplastia. El objetivo de nuestro artículo es presentar nuestros primeros resultados de craneoplastia con tela de titanio y colgajo galeal bipediculado. A través de un estudio retrospectivo, descriptivo, tipo serie de casos, relatamos los resultados de nuestra experiencia en craneoplastia con tela de titanio y colgajo sobre 10 pacientes operados entre Enero y Octubre de 2007, tras valoración con Tomografía Computerizada, de los cuales el 90% fueron de sexo masculino y con una edad media de 29,9 a os. El tiempo medio de internamiento hospitalario fue de 10,3 días. Tuvimos un caso de complicación y una reintervención por desplazamiento de la tela de titanio a los 4 meses. Todos los pacientes quedaron satisfechos con los resultados. Como conclusión, la craneoplastia con tela de titanio asociada a colgajo galeal bipediculado es un procedimiento eficaz y viable dentro de la red pública hospitalaria. A falta de continuidade entre ossos da calota craniana é mais frequentemente causada por trauma cranio-encefálico grave. A repara o dessas deformidades é conhecida como cranioplastia. Objetivo: Avaliar os resultados dos primeiros casos da cranioplastia com tela de titanio e retalho galeal bipediculado. Por meio de estudo retrospectivo, descritivo, tipo série de casos, relatam-se os resultados de cranioplastia com tela de titanio e retalho a que 10 pacientes foram submetidos, entre Janeiro a Outubro de 2007, após avalia o por tomografia computadorizada, sendo 90% do sexo masculino, com média de idade de 29,9 anos. O tempo médio de internamento foi de 10,3 dias. Houve uma complica o e uma reopera o por deslocamento da tela após quatro meses. Todos os pacientes ficaram satisfeitos com os resultados. Conclus o: A cranioplastia com tela de titanio associada ao retalho galeal bipediculado é um procedimento eficaz e viável na rede pública hospitalar. The discontinuity of skull cap bones is most frequently caused by severe crane-encephalic trauma. The repair of these deformities is known as cranioplasty. In our paper we evaluate first results of cranioplasty with titanium meshes and galeal bipediculated remnant, according to a retrospective, series of cases, one described the results of cranioplasty with titanium meshes and remnant involving 10 patients attempted from January to October 2007, after pre-surgery evaluation by computerized tomography. Ninety per cent of patients were ma
Acute toxoplasmosis infection in a patient with ankylosing spondylitis treated with adalimumab: a case report
V.F. Azevedo,C.F. Pietrovski,M. de Almeida Santos Jr
Reumatismo , 2011, DOI: 10.4081/reumatismo.2010.283
Abstract: Ankylosing spondylitis (AS) is a chronic inflammatory disease that affects the axial skeleton, often beginning in the sacroiliac joints, but accompanied also by other signs, including enthesitis, lung fibrosis and eye involvement. AS generally occurs in the second or third decade of life with inflammatory low back pain and has a strong relation with HLA-B27. The objective of the treatment until the end of the 90’s was to ameliorate pain and stiffness and preserve function (1). Nonselective nonsteroidal antiinflammatory drugs (NSAIDs), cyclooxygenase-2 selective inhibitors, and nonpharmalogic interventions, such as physiotherapy, exercise, education, and lifestyle modifications were the basis of the management. Therapy with agents like sulphasalazine was administered for peripheral arthritis (1, 2)...
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