18 documents found, page 1 of 2
Magnetic resonance imaging of skull and brain parameters in fetuses with intrau...
Oliveira Júnior,Ronaldo Eustáquio de; Teixeira,Sara Reis; Santana,Eduardo Félix Martins; Elias Junior,Jorge; Costa,Fabricio da SilvaAbstract Objective: To compare fetuses with intrauterine growth restriction (IUGR) and those with normal growth, in terms of skull and brain measurements obtained by magnetic resonance imaging (MRI). Materials and Methods: This was a prospective cohort study including 26 single fetuses (13 with IUGR and 13 with normal growth), evaluated from 26 to 38 weeks of gestation. Using MRI, we measured skull and brain bi...
The ABCD of portal vein thrombosis: a systematic approach
Minoda,Alexandre Makoto; Cadete,Raissa Brito Fernandes; Teixeira,Sara Reis; Muglia,Valdair Francisco; Elias Junior,Jorge; Melo-Leite,Andréa Farias deAbstract Portal vein thrombosis refers to complete or partial obstruction of the portal venous system, in the intrahepatic or extrahepatic venous tract or even in the splenic or superior mesenteric veins. This common and potentially fatal condition can develop in various clinical contexts, especially those of liver cirrhosis, hepatocellular carcinoma, and other solid tumors. Certain characteristics, such as the...
Reproducibility of abdominal fat assessment by ultrasound and computed tomography
Mauad,Fernando Marum; Chagas-Neto,Francisco Abaeté; Benedeti,Augusto César Garcia Saab; Nogueira-Barbosa,Marcello Henrique; Muglia,Valdair FranciscoAbstract Objective: To test the accuracy and reproducibility of ultrasound and computed tomography (CT) for the quantification of abdominal fat in correlation with the anthropometric, clinical, and biochemical assessments. Materials and Methods: Using ultrasound and CT, we determined the thickness of subcutaneous and intra-abdominal fat in 101 subjects-of whom 39 (38.6%) were men and 62 (61.4%) were women-with ...
Acquired portosystemic collaterals: anatomy and imaging
Leite,Andréa Farias de Melo; Mota Jr.,Américo; Chagas-Neto,Francisco Abaeté; Teixeira,Sara Reis; Elias Junior,Jorge; Muglia,Valdair FranciscoAbstract Portosystemic shunts are enlarged vessels that form collateral pathological pathways between the splanchnic circulation and the systemic circulation. Although their causes are multifactorial, portosystemic shunts all have one mechanism in common-increased portal venous pressure, which diverts the blood flow from the gastrointestinal tract to the systemic circulation. Congenital and acquired collateral ...
Apparent diffusion coefficient of normal adrenal glands
Teixeira,Sara Reis; Elias,Paula Condé Lamparelli; Leite,Andrea Farias de Melo; Oliveira,Tatiane Mendes Gonçalves de; Muglia,Valdair FranciscoAbstract Objective: To assess the feasibility and reliability of apparent diffusion coefficient (ADC) measurements of normal adrenal glands. Materials and methods: This was a retrospective study involving 32 healthy subjects, divided into two groups: prepubertal (PreP, n = 12), aged from 2 months to 12.5 years (4 males; 8 females); and postpubertal (PostP, n = 20), aged from 11.9 to 61 years (5 males; 15 female...
Whole-body magnetic resonance imaging in children: state of the art
Teixeira,Sara Reis; Elias Junior,Jorge; Nogueira-Barbosa,Marcello Henrique; Guimarães,Marcos Duarte; Marchiori,Edson; Santos,Marcel KoenigkamWhole-body imaging in children was classically performed with radiography, positron-emission tomography, either combined or not with computed tomography, the latter with the disadvantage of exposure to ionizing radiation. Whole-body magnetic resonance imaging (MRI), in association with the recently developed metabolic and functional techniques such as diffusion-weighted imaging, has brought the advantage of a c...
Chest magnetic resonance imaging: a protocol suggestion
Hochhegger,Bruno; Souza,Vinícius Valério Silveira de; Marchiori,Edson; Irion,Klaus Loureiro; Souza Jr.,Arthur Soares; Elias Junior,JorgeAbstract In the recent years, with the development of ultrafast sequences, magnetic resonance imaging (MRI) has been established as a valuable diagnostic modality in body imaging. Because of improvements in speed and image quality, MRI is now ready for routine clinical use also in the study of pulmonary diseases. The main advantage of MRI of the lungs is its unique combination of morphological and functional as...
A computational tool as support in B-mode ultrasound diagnostic quality control
Senra Filho,Antonio Carlos da Silva; Rodrigues,Erbe Pandini; Elias Junior,Jorge; Carneiro,Antonio Adilton OliveiraINTRODUCTION: The quality control (QC) of biomedical equipment is a very important process for the quality assurance of the instruments used in diagnoses and treatments. Ultrasound diagnostic imaging is one of the most widely used techniques for diagnostic imaging in hospitals and medical clinics. However, the time required to complete several B-mode imaging QC tests in ultrasound equipment is very critical for...
Avaliação por imagem dos gossipibomas abdominais
Chagas Neto,Francisco Abaeté das; Agnollitto,Paulo Moraes; Mauad,Fernando Marum; Barreto,André Rodrigues Façanha; Muglia,Valdair FranciscoO termo gossipiboma é usado para descrever uma massa formada a partir de uma matriz de algodão cercada por uma reação inflamatória/granulomatosa. Sua incidência é estimada em 0,15% a 0,2%. O corpo estranho na cavidade abdominal pode servir de nicho para a proliferação de microrganismos e agir como foco primário para formação de abscessos e de peritonite. Vários estudos têm demonstrado a importância da correlaçã...
Avaliação e seguimento de pacientes adultos com síndrome do intestino curto pel...
Chagas Neto,Francisco Abaeté das; Barreto,André Rodrigues Façanha; Muglia,Valdair Francisco; Elias Junior,Jorge; Bellucci,Ângela DeleteA síndrome do intestino curto é definida pela incapacidade da superfície do intestino delgado em manter as condições adequadas de absorção de nutrientes, ocasionando deficiências nutricionais. Em adultos, as principais causas de síndrome do intestino curto são as ressecções cirúrgicas amplas ou múltiplas, secundárias a infarto mesentérico, doença de Crohn e enterite actínica. Além de avaliar o tempo de trânsito...