Advanced Physics for Brachytherapy 2018

Recommendations

• If no CT (US and MRI)

➢ Use contoured organs with recommended tissue compositions ▪ For 192 Ir, water is a good approximation for soft tissues only.

▪ Air, lung, bone, … should be assigned correctly o

Could potentially be generated on MRI (Yu et al., IJROBP, In press; DOI: 10.1016/j.ijrobp.2014.03.028)

➢ Use accurate source and applicators geometry and composition