Brand Name: Leksell GammaPlan Product Name: Radionuclide RT Treatment planning system Software Version: 11,3, 11.4 Product Description: Leksell GammaPlan¿ is a computer-based system designed for Leksell Gamma Knife¿ treatment planning.

Reason: Due to an error when defining a new stereotactic reference that users fail to first change an already defined obsolete reference to a pre-plan reference. This may result in a treatment plan that potentially irradiates the incorrect patient location if the error is not detected by users.

Code information: Lot Code: 07340048311878 (LGP 11.3) 07340201502136 (LGP 11.4)

Distribution pattern: Worldwide - U.S. Nationwide distribution including in the states of AK, AZ, CA, CO, ST, FL, GA, HI, IA, IL, LA, MA, MI, MN. MO, NC, NJ, NM, NY, OH, OK, OR, PA, PR, SC, SD, TN, TX, UT, VA, WA, WI, and WV. The countries of Algeria, Argentina, Australia, Belarus, Belgium, Brazil, Bulgaria, Canada, China, Colombia, Croatia, Czech Republic, Dominican Republic, Ecuador, Egypt, El Salvador, France, Georgia, Germany, Hong Kong, India, Iran, Iraq, Italy, Japan, Jordan, Republic of Korea, Kuwait, Libyan Arab Jamahiriya, Lithuania, Malaysia, Mexico, Morocco, Netherlands, Norway, Pakistan, Peru, Poland, Romania, Russian Federation, Saudi Arabia, South Africa, Spain, Sweden, Taiwan, Thailand, Turkey, United Kingdom, and Vietnam.