ABSTRACT
DOSE PAINTING WITH INTENSITY-MODULATED RADIATION THERAPY: THE RADIOBIOLOGICAL TARGET
The latest available technology in radiation therapy,
intensity-modulated radiation therapy (IMRT), offers
more precise radiation delivery with high dose to target
volume while sparing nearby critical structures. IMRT is
defined as the radiation delivery technique that uses radi-
ation fields of various sizes whose intensity could be varied
to control the dose distributions that could be tailored to fit
complex geometric arrangement of targets and for avoid-
ance of critical structures. By allowing the intensity within
the target to vary opened the door to the possibility of
protecting critical structures that were positioned near the
target and fell within one or more of the different treatment
fields, as well as “paint” or “sculpt” high-/low-dose regions
within the target.
