COMPARISION DOSIMETRIC DISTRIBUTION OF 3D, FiF, IMRT, VMAT RADIATION TREATMENT PLAN FOR COSERVATIVE BREAST CANCER

Công Hoàng Nguyễn1,, Công Định Đinh1
1 National cancer hospital

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Abstract

Adjuvant RT for conservative breast cancer is the standard of treatment. Aims to compare radiation dose distribution of 3D, FiF, IMRT và VMAT treatment plan. Methods: 60 BC stage I-II who were treated from 2016 - 2019. Compare 3D-wedges to IMRT (FIF) plan for HI, CI, UI, Dmax, Dmean at PTV, V95%, V107%; OAR: Dmax, Dmean V10, V20, V5 lung, heart. Result: All 3D, FinF, IMRT and VMAT treatment plans meet the standards of radiation dose at PTV and OARs about dose HI, UI of radiotherapy plan by Intensity-modulated radiation therapy techniques are better than 3D radiotherapy with significantly improved HI and CI indexes, the difference is statistically significant. V3, V5 in lung and heart of IMRT, VMAT plan are significantly higher than FiF and 3D radiation Conclusion: 3D, FinF, IMRT and VMAT techniques in conservative breast cancer all met the standards of distribution and dose limitation at PTV and OAR. With IMRT and VMAT plans: V3, V5 were higher in the lungs and heart. In left breast cancer, some patients need to be considered using motion management to actively reduce radiation dose to the heart.

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References

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