Ultrasonography Doppler
Mostrando 37-48 de 119 artigos, teses e dissertações.
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37. Can Doppler or contrast-enhanced ultrasound analysis add diagnostically important information about the nature of breast lesions?
OBJECTIVES: Despite evidence suggesting that Doppler ultrasonography can help to differentiate between benign and malignant breast lesions, it is rarely applied in clinical practice. The aim of this study was to determine whether certain vascular features of breast masses observed by duplex Doppler and color Doppler ultrasonography (before and/or after micr
Clinics. Publicado em: 2014-02
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38. Is painless synovitis different from painful synovitis? A controlled, ultrasound, radiographic, clinical trial
OBJECTIVE: This study compares the clinical, ultrasonography, radiography, and laboratory outcomes of painless and painful chronic synovitis in patients with established rheumatoid arthritis. METHODS: This cross-sectional study involved 60 patients with rheumatoid arthritis and synovitis in the metacarpophalangeal joints; 30 of the patients did not experi
Clinics. Publicado em: 2014-02
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39. Contribuição da medida do volume de fluxo da artéria mesentérica superior pelo Doppler na caracterização da atividade inflamatória em pacientes com doença de Crohn
Objective To investigate superior mesenteric artery flow measurement by Doppler ultrasonography as a means of characterizing inflammatory activity in Crohn's disease. Materials and Methods Forty patients were examined and divided into two groups – disease activity and remission – according to their Crohn's disease activity index score. Mean superior mes
Radiol Bras. Publicado em: 2013-10
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40. Evaluation with Doppler vascular ultrasound in postoperative endovascular treatment of abdominal aortic aneurysm: a prospective comparative study with angiotomography
BACKGROUND: Diagnosis of abdominal aortic aneurysm (AAA) is usually incidental, and surgical treatment, when indicated, may be open or endovascular. The drawbacks of computed angiotomography (CTA) and the advantages of Doppler ultrasonography have led to the development of alternative follow-up protocols, comparing the two methods. OBJECTIVE: To determ
J. vasc. bras.. Publicado em: 2013-06
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41. Autorregulação encefálica durante manobra de preensão manual avaliada pela técnica de autorregressão de médias móveis através do Doppler transcraniano / Cerebral hemodynamic changes assessed by transcranial Doppler ultrasonography during handgrip maneuver
We investigated the effect of handgrip (HG) maneuver on time-varying estimates of dynamic cerebral autoregulation (CA), using the autoregressive moving average (ARMA) technique. Twelve healthy subjects were recruited to perform HG maneuver during 3 minutes with 30% of maximum contraction force. Cerebral blood flow velocity, end-tidal CO2 pressure (PETCO2), a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/08/2012
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42. Intervalos de referência condicionais de parâmetros dopplervelocimétricos maternofetais = : Conditional reference intervals of materno-fetal Doppler parameters / Conditional reference intervals of materno-fetal Doppler parameters
Objetivos: Determinar intervalos de referência condicionais (longitudinais) para os valores de índices de pulsatilidade (IP) nos fluxos da artéria umbilical (AU), cerebral média (ACM), ducto venoso (DV) e IP médio das artérias uterinas (AUT), por meio da avaliação de gestantes de baixo risco de uma amostra da população brasileira. Métodos: Estudo
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/08/2012
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43. Doppler venoso fetal na insuficiência placentária: relação com o pH no nascimento / Fetal venous Doppler in pregnancies with placental dysfunction: correlation with pH at birth
OBJECTIVE: This study, conducted in high-risk pregnancies with placental insufficiency, aims to avaliate blood flow in the fetal left portal vein (LPV), umbilical vein (UV) and ductus venosus (DV), and establish which parameters are associated with acidemia at birth. METHOD: A prospective research involving 58 pregnant women, classified according to the pres
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/04/2012
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44. Ultrassonografia e CA-125 como preditores de malignidade em mulheres com tumores anexiais / Ultrasonography and CA-125 as predictors of malignancy in women with adnexal tumors
Introduction: Ovarian cancer is the deadliest gynecologic neoplasm and it is the fifth leading cause of cancer-related deaths in women. The survival rate is low, not exceeding 40% after 5 years and is directly related to tumor stage at the time of diagnosis. To date there is still no screening method that is effective at reducing mortality from this neoplasm
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/02/2012
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45. The role of the resistive index in Hashimoto's thyroiditis: a Sonographic pilot study in children
OBJECTIVE: The role of Doppler ultrasonography in the diagnosis of diffuse thyroid diseases is not well established. In particular, Doppler ultrasonography findings in children with Hashimoto's thyroiditis are very limited. We examined gray-scale and Doppler ultrasound findings in Hashimoto's thyroiditis in children in an attempt to understand the feasibilit
Clinics. Publicado em: 2012-11
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46. Evaluation of the resistive index of prostatic blood flow in benign prostatic hyperplasia
OBJECTIVE: The aim of this work is to study the resistive index (RI) of prostatic blood flow by transrectal power Doppler sonography in benign prostatic hyperplasia (BPH) to determine its correlation with other parameters of BPH. MATERIALS AND METHODS: Eighty-two male patients aged 52-86 years with lower urinary tract symptoms (LUTS) due to BPH were included
International braz j urol. Publicado em: 2012-04
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47. Is the measurement of inferior thyroid artery blood flow velocity by color-flow Doppler ultrasonography useful for differential diagnosis between gestational transient thyrotoxicosis and Graves' disease? A prospective study
OBJECTIVE: To determine the role of peak systolic velocity, end-diastolic velocity and resistance indices of both the right and left inferior thyroid arteries measured by color-flow Doppler ultrasonography for a differential diagnosis between gestational transient thyrotoxicosis and Graves' disease during pregnancy. METHODS: The right and left inferior thyro
Clinics. Publicado em: 2012
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48. Abnormal transcranial Döppler ultrasonography in children with sickle cell disease
BACKGROUND: Stroke is a potentially fatal complication of sickle cell disease in children between 2-16 years and transcranial Döppler has been recommended as a screening method in these cases. OBJECTIVE: The main goal of this study was to correlate transcranial Döppler results to complications related to stroke in sickle cell disease and baseline character
Rev. Bras. Hematol. Hemoter.. Publicado em: 2012