Folie 1

• Isocenter placed in target

• 7-11 fields spread as much as possible

• Avoid directly opposing fields

• Avoid entering a OAR (spinal cod, duodenum, bowel, kidneys).

• Fit MLC to help structure

3D conformal treatment planning

PTV

MLC fit

• MLC fit is 2mm longer (sup-inf) and 3 mm

tighter (lat and AP) than the PTV

• Manual adjustements may be necessary,

for example to sprare thoracic wall better