ZAP-X Radiosurgery System

Reason: Software issue identified in cases of initial patient setup with large (greater-than-or-equal-to 1.5 degrees) rotational deviations, between digitally reconstructed radiographs, and pre-delivery X-ray images. In these cases the transitional alignment algorithm may incorrectly calculate the new treatment table offset values, leading to an incorrect position for the subsequent treatment isocenter.

Code information: UDI-DI: 00860183001504, Serial Numbers, ZUC17152, ZUC17153, ZUC18155, ZUC20157, ZUC20158, ZUC20156, ZUC21161, ZUC21162, using Treatment Delivery Software Version: 1.8.53

Distribution pattern: Worldwide distribution - US Nationwide distribution in the states of AZ, MD, FL, CO and the countries of DEU, CHE, JPN.