Ultrasonic Diagnosis
Mostrando 1-12 de 19 artigos, teses e dissertações.
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1. Ultrasound Versus Contrast-Enhanced Magnetic Resonance Imaging for Subclinical Synovitis and Tenosynovitis: A Diagnostic Performance Study
OBJECTIVES: Radiographic manifestations of synovitis (e.g., erosions) can be observed only in the late stage of rheumatoid arthritis. Ultrasound is a noninvasive, cheap, and widely available technique that enables the evaluation of inflammatory changes in the peripheral joint. In the same way, dynamic contrast-enhanced magnetic resonance imaging (MRI) enabl
Clinics. Publicado em: 20/01/2020
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2. LINEAR ULTRASONIC MOTOR WITH TUBULAR GEOMETRY / MOTOR ULTRA-SÔNICO LINEAR COM GEOMETRIA TUBULAR
This work presents the study on a linear ultrasonic motor with tubular geometry for linear displacements. Similar topologies, reported elsewhere, are conceived for producing rotary motions. Due to some particular characteristics of this geometry, not explored yet, a new study on interaction between resonance modes in a hollow cylinder for linear movement gen
Publicado em: 2008
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3. Diferentes concentraÃÃes espermÃticas na inseminaÃÃo artificial intra-uterina em suÃnos / Different spermatic concentrations on the intrauterine artificial insemination in swine
The aim of this work was to evaluate the efficiency of the intrauterine insemination (IUI) in swine, considering the conception rate, farrowing rate, litter size (alive, stillborn and mummified) and pig born weight. In the IUI, the females had been inseminated at 24 and 48 hours after the oestrus detection, and had been used the inseminating doses with 500 m
Publicado em: 2007
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4. Sistema multicanal de geração e recepção de ondas ultra-sonicas para transdutor matricial linear / Multichannel system for generation and detection of ultrasonic waves with a linear array transducer
Ultrasound in medicine has gone through great evolution in the last few decades and has occupied important position as a tool for therapy and diagnosis. This is due to the ultrasound equipment be of relatively low-cost, ultrasound is a non-ionizing radiation, is a non-invasive imaging method, and the images are created and seen in real time. It is common the
Publicado em: 2006
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5. Variação do volume de liquido aminiotico de gestantes com atividade fisica moderada em imersão em agua
Objective - To evaluate possible changes in the amniotic fluid index (AFI) among pregnant women practicing moderate physical activity in water immersion. Method: a prospective study was performed, comparing the AFI pre and post immersion in water for physical activity. Pregnant women from the Pre Natal Outpatient Clinic in the hospital of the University of C
Publicado em: 2005
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6. Assessment of bony tissue by ultrasound for osteoporosis diagnosis. / Caracterização de tecido ósseo por ultra-som para o diagnóstico de osteoporose.
Ultrasonic assessment of bone for managing osteoporosis has been investigated as an alternative to radition-based bone densitometry technology. In contrast with the ionizing electromagnetic radiation of such clinical bone densitometric technique, ultrasound is a mechanical wave and thus interacts with bone in a fundamentally distinct manner. Ultrasound is vi
Publicado em: 1996
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7. SPEM, sistema pulso-eco microcontrolado para geração e medição de campos ultra-sonicos
In order to obtain more reliability in the processing of information obtained by ultrasound radiation, it is very important to understand the basic principIes of ultrasound wave generation, interaction with and propagation through different media. This can be partially achieved with suitable equipments and a good knowledge of its working conditions. In an ef
Publicado em: 1995
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8. Medida de parametros biomecânicos do olho com laser de baixa coerência. / Measuring biomechanical parameters of the eye using low coherence laser.
In this work we have developed a new method for biometric analysis of the eye. This analysis consists of measurements of biomechanical parameters, like thickness of the cornea, distance between the cornea and the crystalline lens, thickness of the crystalline lens and distance between the crystalline lens and the retina. In this new method we use the interfe
Publicado em: 1994
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9. Histological appearances of intracranial biopsies obtained using the Cavitron ultrasonic surgical aspirator.
The Cavitron ultrasonic surgical aspirator causes localised ultrasonic tissue fragmentation and has recently been used to remove intracranial tumours. We have examined tissue fragments from 17 operations in which the apparatus was used: in all cases a definitive diagnosis could be made from the material aspirated. This finding has not been previously describ
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10. Ultrasonic Diagnosis of Cerebrovascular Disease
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11. Left atrial myxomas in childhood: Presentation with emboli—diagnosis by ultrasonics
Three children with left atrial myxomas are described. All suffered major arterial occlusion with consequent permanent morbidity before the diagnosis was made and the tumour removed. Each child had had previous small embolic phenomena. In two, the diagnosis was made by ultrasound. In any child who has had an arterial embolus without obvious cause, a left atr
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12. Anti-Poly(glycerolphosphate) in Human Sera
Ultrasonic extracts from staphylococci contained red cell-sensitizing poly(glycerolphosphate)teichoic acid antigen. The antigen may contribute to the variability of precipitin reactions used in the diagnosis of Staphylococcus aureus infection.