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Interlimb relation during the double support phase of gait: An electromyographi...

The purpose of this study is to analyse the interlimb relation and the influence of mechanical energy on metabolic energy expenditure during gait. In total, 22 subjects were monitored as to electromyographic activity, ground reaction forces and VO2 consumption (metabolic power) during gait. The results demonstrate a moderate negative correlation between the activity of tibialis anterior, biceps femoris and vast...

Inter-speaker speech variability assessment using statistical deformable models...

The morphological and dynamic characterization of the vocal tract during speech production has been gaining greater attention due to the motivation of the latest improvements in Magnetic Resonance (MR) imaging; namely, with the use of higher magnetic fields, such as 3.0 Tesla. In this work, the automatic study of the vocal tract from 3.0 Tesla MR images was assessed through the application of statistical deform...

Analysis of ground reaction force and electromyographic activity of the gastroc...

Purpose: Mechanisms associated with energy expenditure during gait have been extensively researched and studied. According to the double-inverted pendulum model energy expenditure is higher during double support, as lower limbs need to work to redirect the centre of mass velocity. This study looks into how the ground reaction force (GRF) of one limb affects the muscle activity required by the medial gastrocnemi...

Medical device specificities: opportunities for a dedicated product development...

The medical sector, similarly to other industries as the aviation industry, has to comply with multiple regulations, guidelines and standards. In addition, there are multiple definitions for the expression ‘medical device’ and, before entering the market, manufacturers must demonstrate their product’s safety and effectiveness. In such a complex and demanding environment it is crucial to know t...

Evolution of the cost-effectiveness of Endovascular and Open Surgical Repair of...

Métodos de segmentação para modelação 3D do ouvido a partir de imagens

O objectivo principal deste artigo centra-se na apresentação de métodos de segmentação de imagem adequados para a construção de modelos geométricos 3D das estruturas do ouvido a partir de imagens médicas de Tomografia Computorizada (TC), sendo discutidas as vantagens e desvantagens de cada um. Os métodos são classificados de acordo com as técnicas utilizadas; nomeadamente, em métodos de thresholding, de cluster...

3D Models of Pelvic Floor Muscles Developed by Manual Segmentation to FEM

The female pelvic floor is an understudied region of the body from the biomechanical perspective. MRI has been used in the diagnostic evaluation of the pelvic floor dysfunctions. Static images show their morphology while dynamic images show the functional changes that occur on straining and contraction of the pelvic floor. In the present work, MR images contribute to generate 3D solids of pelvic floor muscles t...