IMRT Course 2016

Considerations for IMRT

Typically characterised by: highly conformal dose distributions; steep dose gradients at edge of PTV and OAR; dose concavities to spare OAR; multiple dose levels; dose escalation.

Potential advantages, but associated risks. A small positional change can translate to a large dosimetric difference – risk of underdosing PTV, or overdosing OAR. Assessing impact of changes may be less intuitive compared with conformal techniques.

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