| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 361.25 KB | Adobe PDF |
Authors
Advisor(s)
Abstract(s)
Introdução – Surface guided radiotherapy (SGRT) é uma técnica que utiliza tecnologia na deteção a 3D da superfície do doente e que auxilia o radioterapeuta no reposicionamento diário e na monitorização de movimentos intra e interfração do doente. É uma técnica não invasiva e sem recurso a radiação ionizante. Objetivos – Pretende-se estudar se a técnica SGRT poderá substituir o uso de marcações cutâneas e o uso de protocolos de imagens de verificação/Image-guided radiation therapy (IGRT), sem comprometer a reprodutibilidade do tratamento. Método – Efetuou-se uma revisão sistemática nas bases de dados Scopus e MEDLINE, onde foram analisados artigos publicados nos últimos cinco anos. Após a conjugação dos termos de pesquisa e de acordo com os critérios de inclusão e exclusão identificaram-se dez artigos, que foram incluídos na revisão. Resultados/Discussão – A técnica SGRT reduziu os desvios no posicionamento, comparativamente ao posicionamento com base em marcações cutâneas. Por outro lado, permite uma redução de dose resultante da verificação da IGRT devido à menor frequência da sua utilização, quando conjugado com SGRT. Conclusão – A SGRT mostrou-se viável ao garantir um posicionamento preciso quando comparada com o reposicionamento convencional baseado na conjugação de marcações cutâneas e lasers. Foi ainda possível verificar uma redução significativa dos erros intrafração e interfração. No entanto, ela não foi considerada suficientemente viável para substituir a IGRT na sua totalidade. A IGRT ainda tem um papel importante na confirmação do posicionamento anatómico e na monitorização do PTV e órgãos adjacentes.
ABSTRACT - Introduction – Surface-guided radiotherapy (SGRT) is a technique that uses technology in the 3D detection of the patient’s surface, which helps the radiation therapists in the daily repositioning and monitoring of intra and interfraction movements of the patient. It is a non-invasive technique and does not use ionising radiation. Objectives – It is intended to study if the SGRT technique could replace the use of skin markers and the use of verification/Image-guided radiation therapy (IGRT) imaging protocols, without compromising the reproducibility of the treatment. Methods – A systematic review was performed in the Scopus and MEDLINE databases, where articles published in the last five years were analysed. After combining the search terms and according to the inclusion and exclusion criteria, ten articles were included in this review. Results/Discussion – The SGRT technique reduced positioning deviations compared to positioning based on skin markers. On the other hand, it allows a dose reduction resulting from IGRT verification, due to the lower frequency of its use, when combined with SGRT. Conclusion – SGRT proved to be feasible in ensuring accurate positioning when compared to conventional repositioning based on the conjugation of skin markers and lasers. A significant reduction in intrafraction and interfraction errors was also observed. However, it was not considered sufficiently feasible to replace IGRT to its full extent. IGRT still has an important role in confirming anatomical positioning and in monitoring PTV and adjacent organs.
ABSTRACT - Introduction – Surface-guided radiotherapy (SGRT) is a technique that uses technology in the 3D detection of the patient’s surface, which helps the radiation therapists in the daily repositioning and monitoring of intra and interfraction movements of the patient. It is a non-invasive technique and does not use ionising radiation. Objectives – It is intended to study if the SGRT technique could replace the use of skin markers and the use of verification/Image-guided radiation therapy (IGRT) imaging protocols, without compromising the reproducibility of the treatment. Methods – A systematic review was performed in the Scopus and MEDLINE databases, where articles published in the last five years were analysed. After combining the search terms and according to the inclusion and exclusion criteria, ten articles were included in this review. Results/Discussion – The SGRT technique reduced positioning deviations compared to positioning based on skin markers. On the other hand, it allows a dose reduction resulting from IGRT verification, due to the lower frequency of its use, when combined with SGRT. Conclusion – SGRT proved to be feasible in ensuring accurate positioning when compared to conventional repositioning based on the conjugation of skin markers and lasers. A significant reduction in intrafraction and interfraction errors was also observed. However, it was not considered sufficiently feasible to replace IGRT to its full extent. IGRT still has an important role in confirming anatomical positioning and in monitoring PTV and adjacent organs.
Description
Keywords
Radioterapia SGRT IGRT Marcações cutâneas Reposicionamento Radiotherapy Skin marks Repositioning
Citation
Pan M, Ndembo S, Caetano M. Impacto da surface guided radiotherapy no posicionamento do doente: revisão sistemática. Saúde & Tecnologia. 2023;(28):14-20.
Publisher
Instituto Politécnico de Lisboa, Escola Superior de Tecnologia da Saúde de Lisboa