Brand Name: RayStation Product Name: RayStation/RayPlan Model/Catalog Number: 13.0.0.1547, 13.1.0.144, 13.1.1.89 Software Version: RayStation 12A, RayStation 12A SP1, RayStation 12A SP2 Product Description: Radiation Therapy Treatment Planning System Component: No

Reason: Potential for the invalidation for calculated radiation dose does not work as intended for certain Regions of Interest (ROIs). This issue occurs for some ROI(s) which have no contours and either have a material override defined, or are of type Bolus, Fixation, or Support. In these cases, adding geometry to the ROI, subsequently modifying geometry, or removing the material override does not invalidate dose as intended.

Code information: Lot Code: UDI: 0735000201054920220616, 0735000201067920221007, 0735000201073020230913 GTIN: 07350002010549, 07350002010679, 07350002010730 Serial Numbers: 13.0.0.1547, 13.1.0.144, 13.1.1.89 Software Revisions: RayStation 12A, 12A SP 1, 12A SP2 Expiration Date: 2028-07-07

Distribution pattern: Refer to the attached documents: Distribution list 167168 US - updated, Distribution list 167168 OUS