MEVION S250 Product Usage: Proton Radiation Therapy System

Reason: Software defect:2D projection of contours in Verity. The defect causes structures to appear off from their true position in the DRR and the radiograph with an error that increases with the distance of the structure from isocenter

Code information: Serial Numbers: S250-0001 through S250-0006

Distribution pattern: US Nationwide Distribution in the states of: FL, MO, NJ, OH, OK