2017_SBRT_Course Book

Management of intrafraction motion

Rectal balloons

30 patients: 15 treated with balloon 15 treated without Monitoring of implanted electromagnetic transponders

Deviation % > 5 mm 3 mm

no balloon

with balloon

Time elapsed

ERB significantly reduces intrafraction prostate motion, and may in particular be beneficial for treatment sessions longer than 150 s.

Smeenk IJROBP 2012