116 / 1544
Motion compensation techniques
Prescription isodose
ITV
4D
è
The radiation beam does not necessarily need encompass the
complete breathing amplitude
l
Broad beam penumbra in the lung tissue
l
Time spend at edges of “ITV” is short
l
Dose loss at edges can be compensated for by higher doses at the centre
Radiother Oncol. 2011 Mar;98(3):317-22