Brand Name: Catalyst+ Product Name: Catalyst, Catalyst+ Model/Catalog Number: SP001-0026, SP003-0002 Software Version: cSRS module in combination with cMotion module Product Description: GMDN: 40893 Patient positioning device, diagnostic imaging/radiotherapy, laser Component: Not applicable

Reason: Due to issues with the system's stereotactic radiosurgery (SRS) treatment cannot be guaranteed for all couch angles and system setups. n certain cases, the system may indicate the patient as correctly positioned at the isocenter, even when the isocenter is positioned outside of the indicated tolerance.

Code information: Lot Code: Note: The error is not related to any serial numbers or LOT numbers. The error is limited to the software module cSRS in combination with cMotion module

Distribution pattern: The software module cSRS has been installed in 37 countries Worldwide - U.S. Nationwide distribution in the states of AK, AL, AR, CA, CT, FL, MO, NC, NM, NY, OH, OK, OR, PA, TN, TX, VA, and WA. The countries of Argentina, Australia, Austria, Belarus, Belgium, Benin, Canada, China, Colombia, Egypt, El Salvador, Finland, France, Germany, Greece, Hungary, India, Italy, Japan, Jordan, Mexico, Morocco, Netherlands, New Zealand, Norway, Portugal, Romania, Russia, Singapore, South Korea, Spain, Sweden, Switzerland, Taiwan, Ukraine, and Vietnam.