Work

Impact of variation in voluntary moderate deep inspiration breath hold on the 3D dose distribution in breast cancer radiotherapy

Year: 2026

Type: article

Abstract: Aim: Determination of impact of variations during voluntary moderately deep inspiration breath hold (vmDIBH) on doses to organs at risk (OAR) and target coverage in patients undergoing radiotherapy (RT) for left-sided breast cancer (BC). Methods: of the clinical target volume (CTV) were calculated. Relationships between vmDIBH level, stability and differences in Dose-Volume Histogram (DVH) parameters were analysed using linear regression and Mann-Whitney U-tests. Results: -CTV, 0.02 Gy in MHD, and 0.05 Gy in MLD. Conclusion: Only small breathing excursions beyond 3 mm were observed during vmDIBH without visual coaching, not resulting in clinically relevant CTV Underdosage with MHD and MLD remaining within tolerance.

Source: Technical Innovations & Patient Support in Radiation Oncology

DOI: 10.1016/j.tipsro.2026.100385