We describe the displacement of the beam-axis from the planning isocenter in clinical situations during three-dimensional conformal radiosurgery using an Acculeaf bi-directional micro-multileaf collimator. The displacements were recorded for 64 ports using a video imaging system and a stereotactic arc. The mean displacement was 0.41±0.25 mm.
- Beam's eye monitor
- Linear accelerator
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging