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Current clinical standard
•
4DCT is standard in many modern clinics.
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Treatment planning is mostly performed to a single phase of a
4DCT.
•
Delivery is almost entirely based on motion encompassing
techniques – ITV or mid-ventilation approach – or on gating
techniques.
•
Breath-hold and/or gating techniques are mostly used for
organ separation for sites including breast and mediastinal
lymphoma.
•
Image guidance is performed using either orthogonal x-rays or
3D cone-beam CT.