Fiducial marker motion relative to the tumor bed has a significant impact on PTV margins in partial breast irradiation

CONCLUSIONS: Fiducial motion relative to the tumor bed between planning CT and APBI treatment is non-negligible and should be included in the PTV margin calculation to prevent geographical miss. Systematic and random errors of fiducial motion were combined with other geometric uncertainties to calculate comprehensive PTV margins for different treatment techniques.PMID:34329655 | DOI:10.1016/j.radonc.2021.07.020
Source: Radiotherapy and Oncology : journal of the European Society for Therapeutic Radiology and Oncology - Category: Radiology Authors: Source Type: research