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CT-based findings

Only first fraction CT is necessary: small within patient variaton

Bladder filling: increased dose to bladder, decreased dose to

small bowel

Applictor angle: horizontal reduces bowel dose

Airpockets: most distal, reduced by repositioning

Hoskin

Br J Rad

2000; Stewart

IJROBP

2008; Hung IJROBP 2010; Holloway

IJROBP

2011