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Other solutions: IMRT?
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Advantage
With IMRT - better
conformation of dose to target
tissues, increased sparing of
normal tissues , limiting dose
to lungs & heart
Studies have shown – 50%
reduction in cardiac mortality
rate
% of ipsilateral lung volume
receiving >20% of isocentre
dose can be decreased to
3.4%
Considerations
Breast is a
mobile organ
(organ motion effects)
ACTIVE Breathing Control
(ABC)
costly apparatus
required or voluntary breath
hold (low tech)
Geometric uncertainties
as
per patients and lumpectomy
cavity position
Uncertainties regarding
surgical clips displacement
/ lumpectomy cavity