Paula Martins

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Knowledge of the speech production mechanism is essential for the development of speech production models and theories. Magnetic Resonance Imaging delivers high quality images of soft tissues, has multiplanar capacity and allows for the visual-ization of the entire vocal tract. To our knowledge, there are no complete and systematic Magnetic Resonance(More)
Undernutrition is one of the most important public health problems, affecting more than 900 million individuals around the World. It is responsible for the highest mortality rate in children and has long-lasting physiologic effects, including an increased susceptibility to fat accumulation mostly in the central region of the body, lower fat oxidation, lower(More)
  • Paula Martins, Catarina Oliveira, Samuel Silva, António Teixeira
  • 2012
Given the dynamic pattern of the European Portuguese (EP) nasal vowels (i.e. gradual change from an oral configuration towards a nasal one), the acquisition of information on the velum movement over time is of extreme relevance. This study aims to analyse velar dynamics during the production of EP nasal vowels by using real-time resonance imaging (RT-MRI).(More)
Transposition of the great arteries (TGA), also referred to as complete transposition, is a congenital cardiac malformation characterised by atrioventricular concordance and ventriculoarterial (VA) discordance. The incidence is estimated at 1 in 3,500-5,000 live births, with a male-to-female ratio 1.5 to 3.2:1. In 50% of cases, the VA discordance is an(More)
There is increasing evidence that, in addition to velopharyn-geal coupling, lingual position may also change during production of phonemic nasal vowels. In order to investigate differences in oral articulation between European Portuguese (EP) nasal vowels and oral counterparts, imaging data (both static and real-time MRI) of several EP speakers (male and(More)
Congenital heart diseases are present in eight of every 1000 newborns. The diagnosis of those pathologies usually depends on the available imaging methods. A correct diagnosis requires a detailed observation of the heart chambers, wall motions, valves function, and quantitative evaluation of the cavity volumes. For that goal numerous automatic algorithms(More)