Target Volume Determination 2015

The radiotherapy chain

1 x

35 x

Patient

• Treatment room • Lasers • Skin markers • Bone • Tumor

• CT room • Lasers • Skin markers

Patien t

• Images • Bone • Tumor • Delineation • Margin • Planned beam

• Beam • Accelerator • Treatment room

Patient data

17 steps with a lot of room for errors