Impact of rectal gas evacuation on dosimetry and applicator displacement in cervical cancer brachytherapy

Rectal gas evacuation results in a statistically significant and clinically relevant reduction in rectal volume and rectal dose, underscoring its importance as a routine clinical procedure. However, as it may induce millimeter-level applicator displacement with clinically measurable dosimetric consequences, careful monitoring is warranted, with post-evacuation replanning or, if necessary, applicator adjustment.