Physics Bucharest 2017

Incorporating in-room MR

• Many sites soft tissue contrast not optimal with CT

• Interest in MR

• High soft tissue contrast • Imaging could be repeated during XRT • Functional imaging/early response assessment

• Challenges

• Primary photon beam not affected by field but secondary electrons experience Lorentz force • Field also affects dose response of ionisation chambers • Geometric accuracy would need to be sub-mm

03/01/13