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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).