It comes to our attention that an issue has been identified with the Varian Optical Guidance Platform (OGP), v 2.6 and 2.6.1 of a possible infrared light reflection resulting in an inability to calibrate the OGP or track the optical guidance tool (accessory) during use. As a result, the OGP may be unable to track the positioning tool or in one reported case, display an improper correction vector.
The risk associated with this error is the offset at isocentre of the beam by 2 mm, which can result in severe injury, death or permanent total disability.
If you are in possession of the affected product, please contact your supplier for necessary actions.