Sapientia
Repositório Científico da UAlg
Entradas recentes
Comparing total and regional bone density in male adolescents with different body mass
Publication . Pinheiro, João; Ribeiro, Luís Pedro; Silva, M.
During childhood and adolescence, the increase in bone density results in specific maturational changes to the skeleton. This is a crucial factor for healthy development and maintenance during adult life, but also a critical determinant of osteoporosis later in life.Subjects who reach a higher Peak Bone Mass after adolescence have a protective advantage against the inexorable decline in Bone Mineral Density (BMD) with advancing age. Approximately 60 to 80% of the variance in peak bone mass depends on genetic factors; other determinants include modifiable factors, such as diet and physical exercise.Childhood obesity is a growing problem around the world. In 2019, around 29.6% and 12% of Portuguese children were overweight and obese, respectively.
CT imaging: Analyzing jaw condyle bone density as a valuable indicator for age at death in archaeological studies
Publication . Pinheiro, João; Godinho, R.
The identification of attributes given by the skeleton of archaeology and anthropology presents challenges that qualitative or indirect methods show a considerable degree of standard error, both in children and mainly in adults.
TC de dupla energia: Uma nova ferramenta para a radiologia na região do Algarve
Publication . Pinheiro, João
Numa região com um dos parques mais antigos do país em termos de tecnologias da saúde, os profissionais de imagiologia devem ser formados sobre os potenciais benefícios clínicos da Tomografia Computorizada de Dupla Energia (TCDE) em relação à Tomografia Computorizada de Energia Única (TCEU). Para atingir este objetivo, o princípio básico, os métodos atuais de aquisição com vantagens e desvantagens e vários métodos de imagem específicos para materiais, como aplicações clínicas da TC de dupla energia, devem ser abordados detalhadamente. Numa região gravemente carente de resposta imagiológica aos seus pacientes, a implementação de um novo tomógrafo de dupla energia no Centro Hospitalar Universitário do Algarve (CHUA), traz novas possibilidades, mas também novos desafios para os profissionais de imagiologia. Portanto, nesta revisão, focamo-nos nos exames realizados, nas possibilidades e vantagens da TCDE e nas opções de pósprocessamento, e nos potenciais benefícios clínicos, principalmente para melhorar a compreensão dos profissionais e, assim, expandir o uso clínico da tomografia computadorizada de dupla energia. Os métodos atuais de aquisição de TCDE incluem tubos duplos com ou sem filtragem de feixe, comutação rápida de tensão, detector de camada dupla, técnica de filtro dividido e varredura sequencial. Os métodos de imagem específicos para materiais de dupla energia incluem imagens virtuais monoenergéticas ou monocromáticas, mapa de número atómico efetivo, imagens virtuais sem contraste, imagens virtuais sem cálcio, mapa de iodo, mapa de xénon inalado, imagens de ácido úrico, remoção automática de osso e análise de vasos pulmonares.
Exploring cork quality and density: a preliminary investigation employing computerized tomography
Publication . Pinheiro, João; Caldeira Lagem Abrantes, António Fernando; Brito, G.
Sample density was studied by placing an ROI (Region of Interest) to encompass as much usable material as possible in each sample, but not exceeding its limits, or to include the outer layer that is generally of no use (Table 1). The ROI was then evaluated using an average of the minimum to maximum density in the designated area of each of the samples, this process being carried out consistently in order to improve results and reduce measurement error.
Analysis of radiological examination request forms in a radiology department
Publication . Gonçalves, S. R.; Caldeira Lagem Abrantes, António Fernando; Ribeiro, Luís Pedro; do Espírito Santo Rodrigues, Sónia Isabel; Pinheiro, João; Magalhães Ribeiro, Anabela de; Almeida, R. P. P.
Clinical information in the Radiology department is an important tool to perform correct imaging studies, and adjust the exam to the anatomical region and clinical suspicion. Due to limited time and high workflow in diagnostic departments, immobilization devices, and communication barriers with patients, it may be difficult to identify the region under study, adjust the study to the patient's condition, and perform the scan properly.
Thus, the emergency room physicians and other medical referrals should provide as much information as possible so the radiographers, radiologists, and sonographers can perform the requested exam and clarify any clinical suspicion. Proper communication with clinicians before an examination is essential to provide patient-centered healthcare.
The present study aimed to evaluate the existence or absence of clinical information in the examination requests forms in a radiology department.