Gynae BT 2017

Bladder

Challenges

Full and empty bladder scans (for ITV generation)

• Highly distensible, V depends on filling

• Moving (positioning, respiration, bowell filling)

• SimDVH unlikely the same as TxDVH...

• Aim at constant bladder filling (difficult to maintain)

• Different regions – Different endpoints

Hellebust TP, Radiother Oncol 2001 Muren LP, Radiother Oncol 2003 Turner SL, IJROBP 1997 Viswanathan AN, et al. IJROBP 2010