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Desenvolvimento de colimador retangular para uso com aparelhos de raios X em exames odontológicos
(2023-04-20)
Objectives: To develop an open project rectangular collimator to be attached to an intraoral dental X-ray unit, using recycled lead sheets as a radiation-absorbing element. Methods: The collimator was dimensioned for use ...
Associação entre a frequência cardíaca de repouso com a frequência cardíaca média no Holter 24h em pacientes com insuficiência cardíaca com fração de ejeção reduzida e ritmo sinusal
(2023-12-15)
Background: The importance of heart rate (HR) in heart failure with reduced ejection fraction (HFrEF) and sinus rhythm is well-recognised, but the optimal method for measurement remains debated.
Objectives: To compare HR ...
Comparação de métodos de aprendizado de máquina na predição de acidemia fetal
(2023-11-15)
Background: Fetal acidemia, characterized by an umbilical artery pH lower than 7.1, is the main cause of intrapartum asphyxia. The umbilical artery pH indicates comorbidities during the delivery as well as in the child's ...
