Intrafraction motion during partial breast irradiation depends on treatment time

As the prognosis of early-stage breast cancer patients is excellent, prevention of radiation-induced toxicity has become crucial. Reduction of margins compensating for intrafraction motion reduces non-target dose. We assessed motion of the tumor bed throughout APBI treatment fractions and calculated CTV-PTV margins for breathing and drift.
Source: Radiotherapy and Oncology - Category: Radiology Authors: Tags: Original Article Source Type: research