CyberKnife Laser Coincidence Test

Description

This test measures the coincidence between the center of the beam and the laser. This is not used in treatment, but helps to make sure that the collimators may be correctly-aligned when docking into the CyberKnife®.

For analysis, an exposed film showing the beam and the center of the laser marked by either:

1. Using a pinprick on the film

2. Using a pen mark on the film