The medical instrument technician (vascular) is expected to perform the full range of vascular ultrasound procedures including the most complex and non-routine and to make appropriate adjustments in established procedures and techniques to obtain the results required for clinical diagnosis and documentation. At the full performance level, the technician would also have the ability to perform intracranial (transcranial) vascular examinations if the equipment is available and the need exists. 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. Education. There are no specific educational requirements for this occupation. Education may besubstituted for experience only at the GS-4