Dose Course 2018_Flipping book

CT images defines the radiation transport arena

• Imaging sequence must be relevant for the irradiation technique (breath hold, gating etc) • Movements may yield large artifacts, and hence their calculated dose

In lung, the dose to a small dense object (tumor) covered by large enough field margins is more determined by its size&chape than its position!

Wrong shape – wrong dose!

Wrong place – likely correct dose!

38