Browsing by Author "Silva, Teresa"
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- Changing negative perceptions of animals through teaching practice: a research in primary educationPublication . Almeida, António; García Fernández, Beatriz; Silva, TeresaThis research focused on whether teaching practice could improve children’s perceptions of animals with a bad image. For this purpose, children from the 5th year of schooling approached the topic “diversity of animals” differently. The experimental group, 50 children from three classes (25 boys and 25 girls) aged 10 to 13, adopted an approach more focused on the role of the ecosystem and benefits of the animals for humans. The control group, 53 pupils from another three classes (27 boys and 26 girls) within the same age range, adopted a more descriptive approach based on the morphology, physiology and behaviours of the different animals. A pre-test and a post-test were administered to identify children’s empathy with ten animals with a bad image and to assess both their attractiveness and dangerousness. The experimental group significantly increased their empathy with the ten animals and only the assessment of their dangerousness was less conclusive. Even so, the dangerousness of the shark and of the mouse decreased significantly in this group. The research seems to be important as an aid to the design of didactic approaches related to the present issue both in continuous and pre-service training courses for primary teachers.
- Radiotherapy setup displacements in breast cancer patients: 3D surface imaging experiencePublication . Sá, Ana Cravo; Fermento, Ana; Neves, Dalila; Ferreira, Sara; Silva, Teresa; Coelho, Carina Marques; Vaandering, Aude; Roma, Ana; Quaresma, Sérgio; Bonnarens, EmmanuelAim - In this study, we intend to compare two different setup procedures for female breast cancer patients. Background - Imaging in radiotherapy provides a precise localization of a tumour, increasing the accuracy of the treatment delivery in breast cancer. Materials and methods - Twenty breast cancer patients who underwent whole breast radiotherapy (WBRT) were selected for this study. Patients were divided into two groups of ten. Group one (G1) was positioned by tattoos and then the patient positioning was adjusted with the aid of AlignRT (Vision RT, London, UK). In group two (G2), patients were positioned only by tattoos. For both groups, the first 15 fractions were analyzed, a daily kilovoltage (kV) cone beam computed tomography (CBCT) image was made and then the rotational and translational displacements and, posteriorly, the systematic (Σ) and random (σ) errors were analyzed. Results - The comparison of CBCT displacements for the two groups showed a statistically significant difference in the translational left-right (LR) direction (ρ = 0.03), considering that the procedure with AlignRT system has smaller lateral displacements. The results of systematic (Σ) and random (σ) errors showed that for translational displacements the group positioned only by tattoos (G2) demonstrated higher values of errors when compared with the group positioned with the aid of AlignRT (G1). Conclusions - AlignRT could help the positioning of breast cancer patients; however, it should be used with another imaging method.