Tipo
Documentos Académicos
Tipo de Documento
Dissertação de Mestrado
Título
Desenvolvimento de um sistema de irradiação por laser utilizando ótica de varrimento para aplicação em fototerapia
Participantes na publicação
Diogo Barbeiro Casas Novas (Author)
João Miguel Pinto Coelho (Co-Supervisor)
Dep. Física
IBEB
Pedro Manuel Cardoso Vieira (Supervisor)
Resumo
Cancer is a disease characterised by the uncontrolled growth and development of cells in the body and is associated with high levels of mortality. In this context, phototherapy has gained relevance, especially because it has fewer side effects than other forms of treatment such as chemotherapy or radiotherapy, since it uses non-ionising radiation.\\n Despite the great advances in this area, various optimisation parameters are still being explored, such as deposition, size and type of photosensitising agents, or laser operating conditions, such as power and incidence zone. As such, there is a need to develop irradiation techniques that make it possible to control the size of the illuminated area and adapt it to the size of the tumour, with the intention of minimising damage to healthy tissue. In an attempt to combat this problem, alaser irradiation system using scanning optics was developed, allowing the control of energy, time and irradiated area through the use of galvanometric mirrors. The control software, implemented in Python, makes use of a microcontroller and a digital-to-analogue converter to produce a signal corresponding to the desired scanning pattern.\\n This approach has proved capable of irradiating any point in a maximum area of 5 cm wide by 5 cm high, as well as controlling and monitoring the temperature of a region of interest over time. Although the results are promising, there is still a need to conduct in vivo tests, study new scanning patterns, and explore the ability to achieve non-homogeneous control of the region of interest.
Data de Publicação
2024-12-02
Instituição
FACULDADE DE CIÊNCIAS E TECNOLOGIA DA UNIVERSIDADE NOVA DE LISBOA
Identificadores da Publicação