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au:Lins, Carolina Freitas

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Metallic artifact suppression with MAVRIC-SL in magnetic resonance imaging for assessing chronic pain after hip or knee arthroplasty
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Rios, Gustavo Mota

; Lins, Carolina Freitas

; Quadros Junior, Milson Carvalho

; Nery, Raphaela Lisboa Andrade

; Trindade, Ronald Meira Castro

; Matos, Marcos Almeida

Radiologia Brasileira

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sep 2023, Volume 56 N. 5 Pages 255 - 262

Abstract: En Pt | Text: En Pt | PDF: En | PDF: Pt

Abstract Objective: To analyze the association between osteolysis at the prosthesis interfaces, as determined by magnetic resonance imaging (MRI) with multiacquisition variable-resonance image combination selective (MAVRIC-SL) sequences, and clinical severity after knee or hip arthroplasty, as well as to assess interobserver and intraobserver agreement on periprosthetic bone resorption. Materials and Methods: This was a cross-sectional study of 47 patients (49 joints) under postoperative follow-up after knee or hip arthroplasty, with chronic pain, between March 2019 and August 2020. All of the patients completed the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) questionnaire. The component interfaces were evaluated and ordered into two groups: osseointegrated and osteolytic. Nonparametric tests were used. Results: There were significant differences between the two groups in terms of the mean WOMAC scores: total (p = 0.010); stiffness domain (p = 0.047); and function (p = 0.011) domains. There was substantial interobserver and intraobserver agreement for most analyses of the components. Conclusion: Periprosthetic osteolysis appears to be associated with clinical complaints of pain in the post-arthroplasty scenario, and MAVRIC-SL provides reproducible assessments. It could prove to be an important tool for orthopedists to use in the evaluation of challenging cases of chronic pain after arthroplasty.

Resumo Objetivo: Analisar associação entre osteólise nas interfaces protéticas por ressonância magnética com sequências MAVRIC-SL e a gravidade clínica dos pacientes submetidos a artroplastias de joelho ou quadril. Determinar concordância intraobservador e interobservador na reabsorção óssea peri-implante. Materiais e Métodos: Foi realizado estudo transversal entre março de 2019 e agosto de 2020, com 47 pacientes (49 articulações) em seguimento pós-operatório de artroplastias de joelho ou quadril, com dor crônica, que responderam ao questionário WOMAC. As interfaces dos componentes foram avaliadas e definiram dois grupos: osteointegrado e osteólise. Testes não paramétricos foram usados. Resultados: Houve diferença significativa na média do escore WOMAC entre os grupos (p = 0,010), assim como nos domínios rigidez (p = 0,047) e função (p = 0,011). Houve concordância substancial interobservador e intraobservador para a maioria dos componentes analisados. Conclusão: Osteólise periprótese parece estar associada com a queixa clínica de dor pós-artroplastia, com avaliação reprodutível pela MAVRIC-SL. Isto pode ser uma importante ferramenta para o ortopedista na avaliação de casos desafiadores de dor crônica pós-artroplastia.

https://doi.org/10.1590/0100-3984.2023.0026

Tibial edema in osteomeniscal impingement: how can we contribute? impingement contribute
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Lins, Carolina Freitas

; Nogueira-Barbosa, Marcello Henrique

Radiologia Brasileira

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jun 2023, Volume 56 N. 3 Pages IX - X

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

https://doi.org/10.1590/0100-3984.2023.56.3e3-en

Metallic artifact suppression with MAVRIC-SL in magnetic resonance imaging for assessing chronic pain after hip or knee arthroplasty
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Rios, Gustavo Mota

; Lins, Carolina Freitas

; Quadros Junior, Milson Carvalho

; Nery, Raphaela Lisboa Andrade

; Trindade, Ronald Meira Castro

; Matos, Marcos Almeida

Radiologia Brasileira

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2023, N. ahead

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

https://doi.org/10.1590/0100-3984.2023.0026

Lignin-modified road marking paint: weathering aging studies
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Pereira, Amanda Petronilha

; Ribeiro, Júlia Lopes

; Oliveira, Ana Carolina Ferreira

; Vasconcelos, Claudia Karina Barbosa

; Viana, Marcelo Machado

; Lins, Vanessa de Freitas Cunha

REM - International Engineering Journal

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jun 2021, Volume 74 N. 2 Pages 225 - 233

Abstract: En | Text: En | PDF: En

Abstract The accelerated artificial aging with ultraviolet radiation, viscosity, density, no-pick-up time, flexibility, and abrasion resistance of lignin-modified road marking paint were evaluated. The addition of lignin did not cause significant changes in the physical chemistry, flexibility and no-pick-time test compared to the precursor paint. The addition of 1.00 wt. % of lignin increased the abrasion resistance by 36%. The Fourier Transform Infrared technique performed before and after exposure to Weather-o-meter aging chamber has shown the cleavage of ester groups that are present in acrylic-based resin. The incorporation of 0.10 wt.%, 0.25 wt.%, and 1.00 wt.% increased the photodegradation resistance of the road marking paint inhibiting the ester group and side-chain scissions, since the C-O and C=O band intensity increased after irradiation. The introduction of lignin delayed the yellowing of the aged samples and improved mechanical and photophysical properties besides being a good strategy for the biomass waste utilization of the paper industry.

https://doi.org/10.1590/0370-44672020740113 350 downloads

Applications of the Dixon technique in the evaluation of the musculoskeletal system
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Lins, Carolina Freitas

; Salmon, Carlos Ernesto Garrido

; Nogueira-Barbosa, Marcello Henrique

Radiologia Brasileira

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feb 2021, Volume 54 N. 1 Pages 33 - 42

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo A aquisição de imagens com supressão do sinal da gordura é um recurso de grande utilidade diagnóstica, existindo várias sequências capazes de realizá-la. A técnica Dixon, ao contrário de outras técnicas de supressão de gordura, permite suprimir a contribuição do sinal de gordura no pós-processamento e não durante a aquisição, além de permitir a visualização de mapas com a distribuição da água e da gordura. Esta revisão sobre a técnica Dixon almeja ilustrar os princípios físicos básicos, comparar a técnica com outras sequências de ressonância magnética para supressão ou quantificação de gordura, e descrever suas aplicações no estudo de doenças do sistema musculoesquelético. Muitas variantes da técnica Dixon foram desenvolvidas, proporcionando separação mais consistente dos sinais de gordura e água e permitindo correção de muitos fatores de confusão. Permite obter supressão homogênea de gordura, podendo ser adquirida de forma combinada com várias outras sequências, bem como com diferentes ponderações. Esta técnica possibilita também a obtenção de imagens com e sem supressão de gordura a partir de uma única aquisição. Adicionalmente, a técnica Dixon pode ser utilizada como recurso quantitativo, pois permite a mensuração do porcentual de gordura e, em versões mais atualizadas, consegue quantificar ferro tecidual.

Abstract The acquisition of images with suppression of the fat signal is very useful in clinical practice and can be achieved in a variety of sequences. The Dixon technique, unlike other fat suppression techniques, allows the signal of fat to be suppressed in the postprocessing rather than during acquisition, as well as allowing the visualization of maps showing the distribution of water and fat. This review of the Dixon technique aims to illustrate the basic physical principles, to compare the technique with other magnetic resonance imaging sequences for fat suppression or fat quantification, and to describe its applications in the study of diseases of the musculoskeletal system. Many variants of the Dixon technique have been developed, providing more consistent separation of the fat and water signals, as well as allowing correction for many confounding factors. It allows homogeneous fat suppression, being able to be acquired in combination with several other sequences, as well as with different weightings. The technique also makes it possible to obtain images with and without fat suppression from a single acquisition. In addition, the Dixon technique can be used as a quantitative method, allowing the proportion of tissue fat to be determined, and, in more updated versions, can quantify tissue iron.

https://doi.org/10.1590/0100-3984.2019.0086 2121 downloads

Incidence, characteristics and long-term outcomes of patients with diabetic ketoacidosis: a prospective prognosis cohort study in an emergency department
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Nunes, Rachel Teixeira Leal

; Mota, Carolina Frade Magalhães Girardin Pimentel

; Lins, Paulo Ricardo Gessolo

; Reis, Fernanda Salles

; Resende, Thais Castanheira de Freitas

; Barberino, Ludmila de Andrade

; Silva, Pedro Henrique Luiz da

; Gois, Aecio Flavio Teixeira de

Sao Paulo Medical Journal

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feb 2021, Volume 139 N. 1 Pages 10 - 17

Abstract: En | Text: En | PDF: En

ABSTRACT BACKGROUND: Diabetic ketoacidosis is the most frequent hyperglycemic complication in the evolution of diabetes mellitus. Common precipitating factors include newly diagnosed diabetes mellitus, noncompliance with therapy and infections. However, few studies have been conducted in Brazil and none were prospective in design. OBJECTIVE: To describe the incidence, clinical and laboratory characteristics and precipitating factors of diabetic ketoacidosis among emergency department patients in a tertiary-level teaching hospital in Brazil. We also aimed to identify immediate and long-term mortality within two years. DESIGN AND SETTING: Prospective prognosis cohort study conduct at a tertiary-level teaching hospital in São Paulo, Brazil. METHODS: All patients > 12 years old presenting diabetic ketoacidosis who were admitted to the emergency department from June 2015 to May 2016 were invited to participate. RESULTS: The incidence of diabetic ketoacidosis per 1,000 admissions was 8.7. Treatment noncompliance and infection were the most common causes of diabetic ketoacidosis. The immediate mortality rate was 5.8%, while the six-month, one-year and two-year mortality rates were 9.6%, 13.5% and 19.2%, respectively. Death occurring within two years was associated with age, type 2 diabetes, hypoalbuminemia, infection at presentation and higher sequential organ failure assessment (SOFA) score at admission. CONCLUSIONS: Diabetic ketoacidosis among patients presenting to the emergency department was relatively frequent in our hospital. Treatment noncompliance and infection were major precipitating factors and presence of diabetic ketoacidosis was associated with immediate and long-term risk of death.

https://doi.org/10.1590/1516-3180.2020.0285.r1.21102020 576 downloads

What do Cochrane systematic reviews say about new practices on integrative medicine?
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Riera, Rachel

; Braga, Vinícius Lopes

; Rocha, Luana Pompeu dos Santos

; Bernardo, Daniel Damasceno

; Andrade, Luísa Avelar Fernandes de

; Hsu, Jessica Chiu

; Silva, Luciana Di Giovanni Marques da

; Suetsugu, Rodrigo Cesar de Sá

; Dittrich, Nicole Hosni

; Lima, Lucas Riguete Pereira de

; Silveira, Vicente Penido da

; Kruglensky, Barbara Caon

; Leonel, Letícia de Freitas

; Barros, Edivando de Moura

; Costa, Anderson Adriano Leal Freitas da

; Quintella, Miguel Lins

; Pacheco, Rafael Leite

; Cruz, Carolina de Oliveira

; Martimbianco, Ana Luiza Cabrera

; Pachito, Daniela Vianna

; Mozetic, Vania

; Teixeira, Tatiana de Bruyn Ferraz

; Torloni, Maria Regina

; Atallah, Alvaro Nagib

Sao Paulo Medical Journal

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may 2018, Volume 136 N. 3 Pages 251 - 261

Abstract: En | Text: En | PDF: En

ABSTRACT BACKGROUND: This study identified and summarized all Cochrane systematic reviews (SRs) on the effects of ten integrative practices that were recently added to the Brazilian public healthcare system (SUS). DESIGN AND SETTING: Review of systematic reviews, conducted in the Discipline of Evidence-Based Medicine, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (Unifesp). METHODS: Review of Cochrane SRs on the following interventions were identified, summarized and critically assessed: apitherapy, aromatherapy, bioenergetics, family constellation, flower therapy, chromotherapy, geotherapy, hypnotherapy, hand imposition or ozone therapy. RESULTS: We included a total of 16 SRs: 4 on apitherapy, 4 on aromatherapy, 6 on hypnotherapy and 2 on ozone therapy. No Cochrane SR was found regarding bioenergetics, family constellation, chromotherapy, clay therapy, flower therapy or hand imposition. The only high-quality evidence was in relation to the potential benefit of apitherapy, specifically regarding some benefits from honey dressings for partial healing of burn wounds, for reduction of coughing among children with acute coughs and for preventing allergic reactions to insect stings. CONCLUSION: Except for some specific uses of apitherapy (honey for burn wounds and for acute coughs and bee venom for allergic reactions to insect stings), the use of ten integrative practices that have recently been incorporated into SUS does not seem to be supported by evidence from Cochrane SRs.

https://doi.org/10.1590/1516-3180.2018.0172170418 2326 downloads

Microstructural Evolution of a Pearlitic Steel Subjected to Thermomechanical Processing
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Duarte, Ana Carolina Ribeiro

; Mendes, Rachel Santos

; Fontana, Manuela

; Silva, Fabiane Roberta Freitas da

; Castro, Gabriel Gonçalves Pessoa de

; Lins, Jefferson Fabrício Cardoso

Materials Research

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2018, Volume 21 N. 2 elocation e20161065

Abstract: En | Text: En | PDF: En

The microstructural alterations suffered during the process of drawing deformation and subsequent annealing of pearlitic steel wires, were evaluated by scanning electron microscopy and atomic force microscopy. The deformed material showed the curling structure in cross section while, in the longitudinal section, the lamellae was aligned with the drawing direction. The microstructural characterization of deformed samples also allowed observing an interlamellar spacing reduction and the intermediate lamellae alignment process. After the heat treatment at 1000ºC for 5 min the microstructure was restored, however, few recrystallized grains were observed. The recovery was the dominant phenomenon, due to factors associated with curling structure that inhibited recrystallization.

https://doi.org/10.1590/1980-5373-mr-2016-1065 1219 downloads

Economic analysis, performance, and feed efficiency in feedlot lambs
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Lima, Natália Ludmila Lins

; Ribeiro, Carolina Resende de Freitas

; Sá, Hemilly Cristina Menezes de

; Leopoldino-Júnior, Izac

; Cavalcanti, Luigi Francis Lima

; Santana, Ronan Aparecido Valadares

; Furusho-Garcia, Iraides Ferreira

; Pereira, Idalmo Garcia

Revista Brasileira de Zootecnia

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oct 2017, Volume 46 N. 10 Pages 821 - 829

Abstract: En | Text: En | PDF: En

ABSTRACT The objective of this study was to evaluate residual feed intake (RFI), residual intake and body weight gain (RIG) and their relationship with other traits of efficiency, performance, and economic analysis of sheep. Lambs (n = 102) were evaluated during 56 days and a herd consisting of 500 ewes was simulated with the mean of dry matter intake (DMI) and final body weight of the lambs, the same as that of the experimental lambs. The lambs were fed hay-based diet of Tifton 85 (Cynodon spp.), corn, and soybean in the voluminous:concentrate ratio of 35:65. Residual feed intake and RIG were correlated with DMI, feed conversion ratio, and feed efficiency. Residual intake and body weight gain were positively correlated with average daily gain, relative growth rate, and Kleiber's rate. The most efficient production systems (lower RFI and higher RIG) had lower costs and higher profit margins. The net present value (NPV) and internal rate of return (IRR) were higher in systems with more efficient lambs. In systems with less efficient lambs, NPV and IRR were negative and lower, respectively. Efficient animals for RFI and RIG showed satisfactory performance and better economic results.

https://doi.org/10.1590/s1806-92902017001000005 2819 downloads

10.

Formato da onda do jato ureteral ao estudo Doppler espectral: comparação interobservadores. Estudo prospectivo em crianças assintomáticas
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Lins, Carolina Freitas

; Lima, Gabriela Ferreira

; Muniz Filho, Adonis Born

; Ribeiro Neto, João Vicente

; Albuquerque, Silvio Cavalcanti de

; Silva, Eduardo Just da Costa e

Radiologia Brasileira

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feb 2010, Volume 43 N. 1 Pages 35 - 38

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

OBJETIVO: Diagnóstico precoce de distúrbios miccionais pode diminuir as repercussões sociais e psicológicas e evitar lesões renais. O jato ureteral pode ser avaliado por estudo Doppler, método que apresenta boa associação com dados clínicos dos pacientes no que diz respeito ao diagnóstico de disfunção miccional. O objetivo deste estudo é avaliar a concordância interobservadores entre os tipos de jato ureteral. MATERIAIS E MÉTODOS: Estudo prospectivo de concordância interobservadores. Um total de 41 pacientes foi examinado sequencialmente por dois médicos ultrassonografistas. Para cada paciente, três curvas dopplerfluxométricas foram obtidas de jatos consecutivos de cada ureter. O número de picos em cada curva foi observado e classificado. A velocidade máxima do maior pico de cada onda foi observada. Coeficientes kappa (κ) foram calculados. RESULTADOS: A concordância interobservadores foi moderada (κ = 0,48; intervalo de confiança 95%: 0,36-0,60). O padrão platô foi o mais frequente. As velocidades máximas dos ureteres, medidas pelos dois observadores, foram de 32,37 cm/s e 35,63 cm/s, respectivamente. CONCLUSÃO: O exame das curvas dopplerfluxométricas do jato ureteral é método que demonstrou moderada concordância interobservadores.

OBJECTIVE: Early diagnosis of voiding dysfunction can minimize social and psychological repercussions and avoid renal lesions. The ureteric jet can be evaluated by color Doppler, and a good correlation has been observed between this method and patients' clinical data in the diagnosis of voiding dysfunction. This study was aimed at evaluating the interobserver agreement in the assessment of the ureteral jet in asymptomatic children. MATERIALS AND METHODS: Interobserver agreement was prospectively evaluated. A total of 41 patients were sequentially evaluated by two medical sonographers. For each patient, three consecutive Doppler waveforms were obtained from each of the two ureteral jets. The number of peaks on each wave was observed and classified. The maximum velocity of the highest peak of each waveform was also observed. Kappa coefficients (κ) were calculated. RESULTS: Moderate interobserver agreement was observed (κ = 0.48; 95% confidence interval: 0.36-0.60). Most frequently a plateau pattern was observed for the ureteric jet. Maximum velocities measured by the two observers were respectively 32.37 cm/s and 35.63 cm/s. CONCLUSION: Moderate interobserver agreement was observed in the evaluation of the ureteric jet by means of color Doppler.

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