Research Masterclass in Radiotherapy Physics 2017

Current clinical standard

• 4DCT is standard in many modern clinics. • 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.