Repositório Institucional - Unifesp :: Navegando por Palavras-chave "ultrasound"

Navegando por Palavras-chave "ultrasound"

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Assessment of fetal lung maturity by ultrasound: objective study using gray-scale histogram
(Informa Healthcare, 2015-04-01) Avritscher Beck, Ana Paula [UNIFESP]; Araujo Junior, Edward [UNIFESP]; Figueiredo Stochero Leslie, Ana Teresa [UNIFESP]; Camano, Luiz [UNIFESP]; Moron, Antonio Fernandes [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
Objective: To evaluate lung maturity using ultrasound (US), comparing the subjective and gray-scale histogram (GSH) techniques.Methods: A total of 77 single pregnancies were evaluated and divided into the following two groups: 11 women of gestational age 28 to 35 + 6 weeks and 66 women >= 36 weeks. the women underwent to emergency or planned cesarean section, according to fetal-maternal indications. the US was performed on the mean sagittal plane of the fetal torso, in order to observe the lung and hepatic areas. Fetal lung maturity was evaluated subjectively and through GSH. After delivery, the incidence of respiratory distress in the newborn was evaluated. the analyses were considered to be correct or incorrect, and comparisons were made using the McNemar test. in order to compare lung/hepatic echogenicity using GSH in groups with and without respiratory distress, the Student's t-test was used.Results: the subjective evaluation identified 41 cases (53.2%) correctly and 36 (46.8%) incorrectly, while GSH found 58 (75.3%) correctly and 19 (24.7%) incorrectly (p = 0.006). There was a significant difference in mean lung/hepatic echogenicity between the groups with and without respiratory distress (1.05 versus 1.26; p = 0.002). in the group of 28 to 35 + 6 weeks, GSH presented sensitivity, specificity and accuracy in predicting respiratory distress of 61.9%, 89.1% and 81.6%, respectively.Conclusion: the evaluation of fetal lung maturity through GSH was more effective than the subjective method in predicting respiratory distress among newborns.
Acesso aberto (Open Access)
Avaliação do ombro em pacientes portadores de espondilite anquilosante por meio de ultra-som
(Sociedade Brasileira de Reumatologia, 2008-04-01) Yoshida Junior, Ciro; Kubota, Edson Shinji [UNIFESP]; Torres, Themis Mizerkowski [UNIFESP]; Ciconelli, Rozana Mesquita [UNIFESP]; Fernandes, Artur da Rocha Correa [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
PURPOSE: To describe shoulder involvement and its prevalence with ultrasound in patients with ankylosing spondylitis and correlate the findings with age and duration of disease. METHODS: Ultrasound scans of both shoulders were performed in thirty five selected patients with clinical diagnosis of ankylosing spondylitis. Rotator cuff texture and thickness were evaluated as well as the biceps tendon, acromioclavicular joint, humeral head tuberosities, subacromial-subdeltoid bursa, and posterior glenohumeral joint. Besides the prevalence of shoulder involvement, information about presence of pain and duration of disease were registered. The data were compared with age and duration of disease using chi-square and Student's t tests. RESULTS: The prevalence of rotator cuff disease was 20%; with 10% of tendinosis/tendon calcification and 10% of partial/full thickness tears. The mean rotator cuff thickness was 5.8 mm. Irregularities of the humeral head tuberosities were present in 84.3% of shoulders and acromioclavicular irregularities were present in 54.3% of shoulders. CONCLUSION: There was no change in rotator cuff thickness related with duration of disease. Bony irregularities in humeral head tuberosities and acromioclavicular joint were the main finding associated with duration of disease. There was no relation between duration of disease and presence of tendinous disease.
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Chromosomal and cardiac anomalies in fetuses with intracardiac echogenic foci
(Elsevier B.V., 2006-11-01) Goncalves, T. R. M.; Zamith, M. M.; Murta, C. G. V.; Bussamra, L. C.; Torloni, M. R.; Moron, A. F.; Hosp & Maternidade Santa Joana; Universidade Federal de São Paulo (UNIFESP)
Objective: To evaluate the prevalence of intracardiac echogenic foci (ICEF) and the association between ICEF and chromosomal and cardiac anomalies in Brazilian women. Methods: in a cross-sectional observational study, 373 of the 23,360 genetic sonograms performed at a private maternal-fetal medicine clinic over 5 years showed intracardiac echogenic foci (ICEF). These 373 sonograms were reviewed for chromosomal and cardiac anomalies and associations were analyzed using the chi(2) test or the Fisher exact test. P < 0.05 was considered significant. Results: the prevalence of ICEF was 1.7%. Cardiac anomalies were detected in 10 sonograms (2.7%) and chromosomal anomalies in 14 (3.7%). There were cardiac defects in 6 (1.7%) of the 359 euploid fetuses with isolated ICEF of the 373 women who had fetuses with ICEF, 295 were younger than 35 years and 78 were 35 years or older. There were 6 fetuses (2.1%) with aneuploidy in the younger group and 8 (10.3%) in the older group. Conclusion: the prevalence of ICEF was 1.7%, and there was an association between cardiac and chromosomal anomalies. Women carrying fetuses with ICEF should be offered fetal echocardiography and karyotyping. (c) 2006 International Federation of Gynecology and Obstetrics. Published by Elsevier Ireland Ltd. All rights reserved.
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Comparison of two- and three-dimensional ultrasonography in lung volume measurement of normal fetuses
(Walter de Gruyter Gmbh, 2007-01-01) Araujo, Edward; Machado Nardozza, Luciano Marcondes; Pires, Claudio Rodrigues; Guimaraes Filho, Helio Antonio; Moron, Antonio Fernandes; Universidade Federal de São Paulo (UNIFESP)
Aim: the purpose of this study was to compare the two-and three-dimensional methods for measuring fetal lung volume of normal fetuses.Methods: A cross-sectional study was performed with 51 normal pregnant women between 20 and 35 weeks. the ellipsoid formula (X*Y*Z*0.52) was used for volume calculation with the two-dimensional (2D) method. With the VOCAL (TM) (Virtual Organ Computer-aided Analysis) method, a rotation angle of 30 degrees was used. Intraclass correlation coefficient (ICC), paired Student's t-test. and Bland-Altman plots were used to compare the techniques. To calculate the intraobserver variability we used the ICC and compared the means between the two measures using the paired Student's p-test.Results: VOCAL (TM) and 2D methods were highly correlated (ICC = 0.919, and 0.873 for the right and left lungs, respectively), however, there was a disagreement. the fetal lung volume means calculated by the 2D method were always overestimated in relation to the means obtained by the VOCAL (TM), for the right lung (24.02 mL x 19.15 mL; P < 0.001), as well as for the left (16.03 mL x 13.77 mL; P = 0.002). As for the intraobserver variability, a good reproducibility was observed for the volume measurement of the left lung by the 2D technique (mean=0.40 mL.; P=0.57) and by the VOCAL (TM) (mean= -0.22 mL; P=0.63). the 2D method, however, presented low reproducibility for the right lung (mean = 1.73 mL; P = 0.31).Conclusion: the two-dimensional method had low agreement and low reproducibility in relation to the threedimensional method for measurement of fetal lung volume in normal fetuses.
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Conservative management of cervical pregnancy with embryonic heart activity by ultrasound-guided local injection: an eight case series
(Informa Healthcare, 2014-09-01) Elito Junior, Julio [UNIFESP]; Musiello, Rubens Bermudes [UNIFESP]; Araujo Junior, Edward [UNIFESP]; Souza, Eduardo [UNIFESP]; Fava, Jair Luiz [UNIFESP]; Guerzet, Eduardo Almeida [UNIFESP]; Camano, Luiz [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
Objective: To evaluate the efficacy of conservative management of cervical pregnancy with embryonic heart activity by ultrasound-guided local injection.Methods: Retrospective case series at University tertiary care Hospital. Eight patients diagnosed with cervical pregnancy with embryonic heart activity managed conservatively. the intervention was ultrasound-guided local injection of methotrexate (1 mg/kg) and potassium chloride (2 meq/mL). Measurements were occurrence of morbidity, necessity for further intervention, the initial titers of beta-hCG, interval of time in which the levels of beta-hCG became negative, period for regression of cervical pregnancy at ultrasound and future pregnancy.Results: All patients were treated successfully. the initial levels of beta-hCG ranged from 3013 to 71199 mUI/mL. One case evaluated with infection. There was no need for additional intervention in our series study. the interval of time for the levels of beta-hCG becomes negative range from 2 to 12 weeks. the period for the regression of the cervical pregnancy at ultrasound range from 3 to 14 weeks. in two cases intrauterine pregnancies occurred after the treatment.Conclusion: Conservative management of cervical pregnancy with embryonic heart activity by ultrasound-guided injection is an effective treatment avoiding the need of further intervention.
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Doppler assessment of uterine blood flow in recurrent pregnancy loss
(Elsevier B.V., 2007-08-01) Ferreira, A. M.; Pires, C. R.; Moron, A. F.; Araujo, E.; Traina, E.; Mattar, Rosiane [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
Objective: To compare uterine artery pulsatility index (PI) and flow velocity wave (FVW) patterns between women with no history of abortion and women with recurrent pregnancy loss of unexplained cause. Method: A cross-sectional study was conducted with 43 women with recurrent pregnancy loss and 43 women with no history of abortion and at least 1 child born at term (control group). Transvaginal ultrasonography with uterine artery Doppler evaluation was performed in the second phase of the menstrual cycle to calculate the PI and analyze the FVW pattern. Results: the women with recurrent pregnancy loss had a significantly higher uterine artery PI than those in the control group (2.71 +/- 0.54 and 2.30 +/- 0.44, respectively), as well as a higher incidence of FVWs of the A and B types. Conclusion: Compared with the control group, a higher PI and a higher incidence of FVW of the A and B typesand thus a higher uterine artery impedance-were found among women with recurrent pregnancy loss. (c) 2007 International Federation of Gynecology and Obstetrics. Published by Elsevier Ireland Ltd. ALL rights reserved.
Acesso aberto (Open Access)
Efeito do ultrassom e do dexapantenol na organização das fibras colágenas em lesão tegumentar
(Associação Brasileira de Pesquisa e Pós-Graduação em Fisioterapia, 2011-06-01) Guimarães, Gustavo Narvaes; Pires-de-Campos, Maria Silvia Mariani; Leonardi, Gislaine Ricci [UNIFESP]; Dib-Giusti, Helena Hanna Kalil; Polacow, Maria Luiza Ozores; Universidade Metodista de Piracicaba Faculdade de Ciências da Saúde; Universidade Estadual de Campinas (UNICAMP); Universidade Federal de São Paulo (UNIFESP); UNIARARAS
OBJECTIVE: To analyze the effect of ultrasound (US), dexpanthenol (d-P) and a combination of these treatments (US+d-P) on collagen fiber organization in tegumentary lesions in rats by birefringence analysis. METHODS: Wistar rats (50) were anesthetized (Thionembutal - Sodic = 50mg/Kg), 1cm² of dorsal region skin was removed, and the animals were divided into five groups: control (C), gel (G), US (3 MHz, 0.1 W/cm2, 1 minute, continuous), d-P (10%) and US+d-P. After daily treatment for 7 and 14 days, 6µm thick sections of lesioned areas were stained in picrosirius and measurements of the collagen birefringent area (µm²) were obtained using polarized light microscopy (Zeiss Axiolab-ZEISS- Germany) with histological image analysis software (KS 400 2.0 - Kontrol Eletronics, Munique, Germany). The means were compared by ANOVA followed by the Tukey test (p<0.05). RESULTS: The US+d-P group showed a significantly greater (p<0.001) birefringent area (1586.43±162.14) than the other experimental groups: C (139.36±35.35), US (317.55±129.9) and d-P (192.41±3657) by the 7th day of treatment, indicating acceleration of the wound healing process. By the 14th day of treatment, the US+d-P, US and d-P groups presented greater birefringence than the control group, but did not differ from each other. CONCLUSION: The combination of treatments (US+d-P) accelerated collagen fiber synthesis and organization in the early stages of cutaneous repair.
Acesso aberto (Open Access)
Epidemiological Risk Factors and Perinatal Outcomes of Congenital Anomalies
(Federacao Brasileira Soc Ginecologia & Obstetricia-Febrasgo, 2016) Garcia Almeida, Lissa Fernandes; Araujo Junior, Edward [UNIFESP]; Crott, Gerson Claudio; Okido, Marcos Masaru; Berezowski, Aderson Tadeu; Duarte, Geraldo; Marcolin, Alessandra Cristina
Objectives To identify the epidemiological risk factors for congenital anomalies (CAs) and the impact of these fetal malformations on the perinatal outcomes. Methods This prospective cohort study comprised 275 women whose fetuses had CAs. Maternal variables to establish potential risk factors for each group of CA and perinatal outcomes were evaluated. The primary outcome was CA. Secondary outcomes included: fetal growth restriction (FGR)
Acesso aberto (Open Access)
Equívocos diagnósticos envolvendo as tendinites: impacto médico, social, jurídico e econômico
(Sociedade Brasileira de Reumatologia, 2009-12-01) Siena, Cesar; Helfenstein Junior, Milton [UNIFESP]; Justiça Federal da 3ª região; Universidade Federal de São Paulo (UNIFESP)
Evidence of the clinical, social, and economic impact of mistaken diagnoses of tendonitis and other chronic painful disorders are analyzed. The objective of this review is to call attention to the possible diagnostic hyper valuation of tendonitis, especially those supposedly multiple or refractory, based on evidence. A review of the literature on chronic painful disorders, such as fibromyalgia, in the context of mistaken diagnosis of tendonitis, as well a review of false positive and ultrasonographic (US) scan diagnostic parameters, is presented. Evidence of therapeutic mistakes were found in 41% and diagnostic mistakes in 70 to 85% of the cases, with proven unpreparedness regarding those disorders in up to 93.7% of the physicians. The diverse repercussions of this epidemic of mistakes are discussed.
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Ethnic variation and variability of fetal nasal bone length at 11-15 weeks of gestation in a Brazilian population: preliminary results
(Springer, 2008-11-01) Cossi, Paulo Sergio [UNIFESP]; Bussamra, L. C. S. [UNIFESP]; Araujo, Edward [UNIFESP]; Machado Nardozza, Luciano Marcondes [UNIFESP]; Moron, Antonio Fernandes [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
Objective To evaluate the maternal ethnic influence and the intra and interobserver reproducibility of the nasal bone length measurement at 11-15 weeks of gestation in a Brazilian population.Methods A cross-sectional study with 171 normal pregnant women at 11-15 weeks was performed. Nasal bone was transabdominally measured in all cases. the patients were separated into three racial groups (White, Black and Asian) according to maternal ethnicity. the intraobserver variability was calculated through the repeated measurement of 55 fetuses by a single observer, and the interobserver variability was calculated through 44 measurements by two observers. the ANOVA test was used to compare the three racial groups. To calculate the variability, the intraobserver correlation coefficient (intra-CC), the interclass correlation coefficient (inter-CC) with 95% confidence interval, and the Bland-Altman plots were used.Results No statistically significant difference could be observed among the three races as for nasal bone length measurement (P = 0.934). the intraobserver variability was considered very good [intra-CC 0.92-IC 95% (0.902; 0.947)], as well as the interobserver variability [inter-CC 0.91-IC 95% (0.873; 0.940)].Conclusions There is no significant difference in nasal bone length measurement among the three races analyzed. Nasal bone length measurement is reproducible.
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Fetal meningeal hemangiopericytoma - Case report
(Amer Assoc Neurological Surgeons, 2002-11-01) Cavalheiro, S.; Sparapani, FVD; Moron, A. F.; Da Silva, M. C.; Stavale, J. N.; Universidade Federal de São Paulo (UNIFESP)
The authors present the case of a 34-week-old fetus with a meningeal hemangiopericytoma that was diagnosed in utero by using abdominal magnetic resonance imaging. After birth, the neonate underwent transfontanelle ultrasonography and computerized tomography scanning of the head, which confirmed the presence of an extradural hyperdense lesion. Six hours after birth the neonate underwent a craniotomy, which resulted in complete resection of the mass. the postoperative period was uneventful and the newborn was discharged 7 days later. At 2-year follow-up examination there was no evidence of recurrence of the lesion. the authors have found no mention in the literature of this entity diagnosed in the prenatal period.
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Fetal obstructive uropathy: is urine sampling useful for prenatal counselling?
(Wiley-Blackwell, 2006-01-01) Miguelez, J.; Bunduki, V; Yoshizaki, C. T.; Sadek, LDR; Koch, V; Peralta, CFA; Zugaib, M.; Universidade de São Paulo (USP); Universidade Federal de São Paulo (UNIFESP)
Objectives To evaluate whether fetal urinary sodium and chloride provide clinically useful information in addition to ultrasound in bilateral obstructive uropathy.Methods Sonographic features and urinary concentrations of sodium and chloride were evaluated in fetuses with bilateral obstructive uropathy. After a minimum of 12 months of postnatal follow-up, cases that developed increased serum creatinine (greater than 50 mu mol/L) were compared with those that did not.Results of the cases studied, 16/35 died perinatally, all showing anamnios and markedly elevated urinary electrolytes. of the survivors, ten maintained normal postnatal serum creatinine, whereas nine did not. the frequency of reduced amniotic fluid/olygohydramnios was higher in cases that developed increased serum creatinine (four out of nine) than in those that did not (nil). Sodium above the 95th percentile was 100% specific and 44% sensitive to predict an increased serum creatinine during early infancy, while chloride above the 95th percentile was 70% specific and 56% sensitive. All seven cases in which urinary sodium was elevated and/or amniotic fluid volume was reduced developed renal failure.Conclusion Urine sampling slightly improved renal function prediction, but this must be balanced against its fetal risks. Copyright (c) 2006 John Wiley & Sons, Ltd.
Acesso aberto (Open Access)
Função endotelial de adolescentes normotensos sem fatores de risco para hipertensão arterial
(Sociedade Brasileira de Pediatria, 2005-10-01) Andrade, Zélia M. de [UNIFESP]; Carvalhaes, João Tomás de Abreu [UNIFESP]; Taddei, Jose Augusto de Aguiar Carrazedo [UNIFESP]; Christofalo, Dejaldo M. J. [UNIFESP]; Ajzen, Sergio Aron [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
OBJECTIVE: To define standards for normal endothelial function in adolescents by high-resolution ultrasound measurement of endothelium-dependent vascular dilatation. METHODS: This was a cross-sectional, descriptive, observational study and part of the thematic project Clinical Study of Growth, Behavior, Arterial Hypertension, Obesity and Oral Health (ECCCHOS) that was developed by the Discipline of Nutrition at the Universidade Federal de São Paulo (UNIFESP). Thirty-one adolescents, eight male and 23 female, with no risk factors for systemic arterial hypertension were selected from 1,420 high school students. The students were daytime pupils at a school in the southeastern district of the city of São Paulo, the capital of São Paulo state, located in the Southeast region of Brazil. All results are presented in the form of means with standard deviations and percentiles. RESULTS: For male students, endothelium-dependant dilation 90 seconds after the cuff was released was 20.9±6,7% [mean ±1 standard deviation] with a 10th percentile of 12.5 and for females these figures were 18.8±12.9% with a 10th percentile of 6.6%. Values for the whole group of subjects were 19.3±11.7% and 6.7%, respectively. CONCLUSION: Endothelium-dependant vascular dilation of 6.7%, after 90 seconds, which corresponds to the 10th percentile, can be considered the lower limit of normality for this age group. Knowledge of this limit is important for the diagnosis of endothelium dysfunction that appears before cardiovascular disease.
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Hormonal influence on periurethral vessels in postmenopausal incontinent women using Doppler velocimetry analysis
(Elsevier B.V., 2007-03-20) Jarmy-Di Bella, Z. I. K.; Girao, M. J. B. C.; Di Bella, V.; Sartori, M. G. F.; Szejnfeld, J.; Baracat, E. C. [UNIFESP]; Lima, G. R.; Universidade Federal de São Paulo (UNIFESP)
The lack of estrogen affects the urinary tract mainly by diminishing vascular, muscular and epithelial trophism, resulting in negative effects on continence in postmenopausal women.Objective: Study the effect of hormone therapy (estrogen and progesterone) in periurethral vessels detected by Doppler velocimetric analysis using, as parameters, the number of vessels, resistance and pulsatility indexes, as well as the minimum diastolic value.Methods: Thirty-eight postmenopausal women with stress urinary incontinence were randomized into two groups. the first consisted of women receiving 3 months of estrogen therapy previous to 3 months of continuous estrogen and progesterone combined therapy. the second comprised of women receiving 3 months of continuous estrogen and progesterone therapy. Periurethral Doppler velocimetric analysis was done before hormone administration and during treatment in both groups.Results: We observed a statistically significant increased number of periurethral vessels during treatment in both groups. There was an increase in value of the mean minimum diastolic value during estrogen and progesterone therapy in Group 2. the resistance indexes diminished in both groups. However, they were not statistically significant.Conclusion: Hormonal therapy of short duration (3-6 months) had a positive effect on the urethral continence mechanism increasing the number of periurethral vessels either with estrogen alone or combined therapy (estrogen and progesterone). (c) 2006 Elsevier Ireland Ltd. All rights reserved.
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Imaging of haemophilic arthropathy in growing joints: pitfalls in ultrasound and MRI
(Wiley, 2017) Soliman, M.; Daruge, P.; Dertkigil, S. S. J.; De Avila Fernandes, E. [UNIFESP]; Negrao, J. R. [UNIFESP]; de Aguiar Vilela Mitraud, S. [UNIFESP]; Sakuma, E. T. I.; Fernandes, A. R. C. [UNIFESP]; Zhang, N.; Huo, A.; Li, Y. -J.; Zhou, F.; Rodrigues, B. M.; Mohanta, A.; Blanchette, V. S.; Doria, A. S.
The purpose of this review was to summarize the current knowledge on the utilization of magnetic resonance imaging (MRI) and ultrasound (US) for assessing arthropathy in children and adolescents with haemophilia and to recognize the limitations of each imaging modality and pitfalls in the diagnosis of soft tissue and osteochondral abnormalities. Awareness of MRI and US limitations and pitfalls in the assessment of joints in persons with haemophilia is essential for accurate diagnosis and optimal management of haemophilic arthropathy.
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Impact of pelvic magnetic resonance imaging findings in the indication of uterine artery embolization in the treatment of myoma
(Via Medica, 2017) Tenorio Brito Pires, Norma Maria; Godoi, Emmanuelle Tenorio; Oliveira, Dinaldo Cavalcanti; Soares Brandao, Simone Cristina; Abath, Carlos Coutinho; Pires, Pedro; Araujo Junior, Edward [UNIFESP]
Objective: To assess the impact of pelvic magnetic resonance imaging (MRI) findings in the indication for uterine-artery embolization in women with fibroids, as well as the correlation between MRI and ultrasound (US) examinations for diagnosing adenomyosis. Material and methods: A retrospective observational study was performed through the analysis of the medical records of 263 women referred for uterine-artery embolization as treatment for fibroids after undergoing US and MRI examinations. To compare uterine volume and fibroid measurement in US and MRI, the Wilcoxon test was used
Acesso aberto (Open Access)
Interobserver variability of ultrasound parameters in portal hypertension
(Instituto Oswaldo Cruz, Ministério da Saúde, 2010-07-01) Sebastianes, Patricia Moreno [UNIFESP]; Sales, Danilo Moulin [UNIFESP]; Santos, José Eduardo Mourão [UNIFESP]; Leão, Alberto Ribeiro de Souza [UNIFESP]; Costa, Juliana Dantas da [UNIFESP]; Takemoto, Kenji [UNIFESP]; Capobianco, Júlia [UNIFESP]; Bezerra, Alexandre Sérgio de Araújo; D'Ippolito, Giuseppe [UNIFESP]; Universidade Federal de São Paulo (UNIFESP); Universidade de Brasília Faculdade de Medicina
The aim of this study was to assess interobserver agreement of ultrasound parameters for portal hypertension in hepatosplenic mansonic schistosomiasis. Spleen size, diameter of the portal, splenic and superior mesenteric veins and presence of thrombosis and cavernous transformation were determined by three radiologists in blinded and independent fashion in 30 patients. Interobserver agreement was measured by the kappa index and intraclass correlation coefficient. Interobserver agreement was considered substantial (κ = 0.714-0.795) for portal vein thrombosis and perfect (κ = 1) for cavernous transformation. Interobserver agreement measured by the intraclass correlation coefficient was excellent for longitudinal diameter of the spleen (r = 0.828-0.869) and splenic index (r = 0.816-0.905) and varied from fair to almost perfect for diameter of the portal (r = 0.622-0.675), splenic (r = 0.573-0.913) and superior mesenteric (r = 0.525-0.607) veins. According to the results, ultrasound is a highly reproducible method for the main morphological parameters of portal hypertension in schistosomiasis patients.
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Magnetoelectric Contribution to Magnetoelastic Coupling in Pb(Fe1/2Nb1/2)O-3 Multiferroics Ceramics
(Taylor & Francis Ltd, 2011-01-01) Fraygola, B.; Frizon, N.; Lente, M. H. [UNIFESP]; Coelho, Adelino A.; Garcia, D.; Eiras, J. A.; Universidade Federal de São Carlos (UFSCar); Universidade Federal de São Paulo (UNIFESP); Universidade Estadual de Campinas (UNICAMP)
In this work, electrical permittivity, magnetic and anelastic measurements in lead iron niobate ceramics (PFN) were performed in the frequency and temperature range from 1 kHz to 10 MHz and from 15 K to 400 K, respectively. Anelastic results characterized unambiguously the magnetoelectric effect in the PFN, demonstrating that ME coupling arises indirectly via strain contribution rather than a direct coupling between electrical and magnetic order parameters.
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Neurological Outcome in Fetuses with Mild and Moderate Ventriculomegaly
(Federacao Brasileira Soc Ginecologia & Obstetricia-Febrasgo, 2016) Tonni, Gabriele; Vito, Ida; Palmisano, Marcella; Martins, Wellington de Paula; Araujo Junior, Edward [UNIFESP]
Introduction Ventriculomegaly (VM) is one the most frequent anomalies detected on prenatal ultrasound. Magnetic resonance imaging (MRI) may enhance diagnostic accuracy and prediction of developmental outcome in newborns. Purpose The aim of this study was to assess the correlation between ultrasound and MRI in fetuses with isolated mild and moderate VM. The secondary aim was to report the neurodevelopmental outcome at 4 years of age. Methods Fetuses with a prenatal ultrasound (brain scan) diagnosis of VM were identified over a 4-year period. Ventriculomegaly was defined as an atrial width of 1015 mm that was further divided as mild (10.1-12.0 mm) and moderate (12.1-15.0 mm). Fetuses with VM underwent antenatal as well as postnatal follow-ups by brain scan and MRI. Neurodevelopmental outcome was performed using the Griffiths Mental Development Scales and conducted, where indicated, until 4 years into the postnatal period. Results Sixty-two fetuses were identified. Ventriculomegaly was bilateral in 58% of cases. A stable dilatation was seen in 45% of cases, progression was seen in 13%, and regression of VM was seen in 4.5% respectively. Fetal MRI was performed in 54 fetuses and was concordant with brain scan findings in 85% of cases. Abnormal neurodevelopmental outcomes were seen in 9.6% of cases. Conclusion Fetuses in whom a progression of VM is seen are at a higher risk of developing an abnormal neurodevelopmental outcome. Although brain scan and MRI are substantially in agreement in defining the grade of ventricular dilatation, a low correlation was seen in the evaluation of VM associated with central nervous system (CNS) or non-CNS abnormalities.
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A new methodology for the measurement of the Wiberg angle in infants under 3 months
(Lippincott Williams & Wilkins, 2000-04-01) Milani, Carlo; Ishida, Akira; Laredo Filho, José; Dobashi, Eiffel T.; Universidade Federal de São Paulo (UNIFESP)
This article describes the measurement of the Wiberg center edge angle in infants under 3 months using sonographic images of their hips. In the literature review, there was no reference of the application of this angle in this particular age group. Thus, a methodology has been developed based upon the fact that, at this age, the acetabular roof constitutes a large portion of hyaline cartilage. In this way, it was concluded that it was not possible to apply the original Wiberg method since the center of the femoral head can be only estimated and not accurately determined in plain radiography. For this present study, 400 hips of 200 infants were analyzed. All these hips were classified as type 1a or 1b, according to Graf. The sonographic images were transferred to a Pentium computer through a video Spigot interface. The images were analyzed by software specially developed for this purpose. Since ultrasonography allows the exact recognition of the anatomical elements of the hip joint in young children, software provided the acetabular cartilaginous roof angle that corresponds to the center edge angle in adults. The authors believe that this method will be helpful in the early detection of morphological alterations in the hip joint.

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