Incumbent is a Diagnostic Radiologic Technologist (Computed Tomography) with the Nebraska-Western Iowa VAHCS. Basic Requirements: United States Citizenship: Non-citizens may only be appointed when it is not possible to recruit qualified citizens in accordance with VA Policy. Certification. All applicants must be certified in general radiologic technology by the American Registry of Radiologic Technology, Radiography (ARRT) (R). Advanced ARRT certification is required for assignments that include computed tomography (CT). Advanced certification indicates that the incumbent can operate independently and has demonstrated specific clinical competency in the appropriate specialty and taken and passed the designated examination. In modalities that require advanced certification, to support their