ESTRO course on Image Guided Radiotherapy in Clinical Practice 2018

The Royal Marsden

Rectal strategies-Intra fraction motion

Magnesium

oxide(500 mg

twice a day)

Placebo

Number of patients

% pts with intra fraction

motion defined as ≥50%

of the fractions ≥2 mm

83%

80%

Double blind randomised

Lips IJROBP 2012