RT
•
Planning CT, 2 weeks >1
st
R-DHAP + information from the PET/CT.
•
Aim: to treat current extent of disease using ISRT
•
Conformal plan:
–
4 primary beams (anterior, R & L anterior obliques, and R posterior oblique) +
–
2 segments (anterior and Ranterior oblique)
•
10 MV photons
•
Dose: 40Gy / 20# / 4 weeks
–
Standard dose for consolidation RT is 30 Gy
–
Refractory disease usually requires higher dose to overcome the resistance.
–
Accept slightly higher doses for OAR (e.g. lung V20 <25%, mean heart dose <15 Gy).




