Course book Advanced Treatment Planning 2018

Static IMRT vs VMAT - Conceptual issues

Is there any difference between static IMRT and VMAT?

• Use the same hardware • Can be virtually ‘ mapped ’ onto each other: – S-IMRT with infinite number of beams → VMAT – VMAT with infinitely small gantry speeds (quasi static) → S-IMRT

Courstesy of Jochem Wolthaus

Bortfeld and Webb, PMB 2009