出版社：Grupo de Pesquisa Metodologias em Ensino e Aprendizagem em Ciências
摘要：Introduction: radiotherapy treatment for left-sided breast cancer has radiation-induced cardiotoxicity as a consequence. The Deep Inspiration Breath Hold (DIBH) technique arose from the need to minimize cardiac doses. Objective: to describe the doses to cardiac structures by means of the Dose Volume Histogram (DVH) in radiotherapy treatment for left-sided breast cancer with the DIBH technique. Methodology: the research is characterized as a case study with multiple analysis units, typified as descriptive, retrospective in nature and with a quantitative approach. Results: the sample was composed of five analysis units. The average cardiac dose for the DIBH technique was 6 Gy; and for the left anterior descending coronary artery, it was 14.8 Gy. Four analysis units benefited the most from the technique, the result of which is justified by the conservative surgical modality, while one unit showed the least benefit, since it performed mastectomy. Conclusion: DIBH is an alternative to reduce cardiac toxicity in women undergoing radiation therapy for left-sided breast cancer, especially in individuals with other risk factors associated with heart disease.
