Ultrasound, Ultrasound Technologist, Sonographer, Ultrasound Technician, Ultrasound Tech, Sonographer Ultrasound, Diagnostic Medical Sonographer, radiologic Technologist, Ultrasound Sonographer, Healthcare, Travel Ultrasound Tech, Travel Assignments, Travel, Contract. If you’re seeking a Travel Ultrasound Tech position in Sioux City, IA and are looking to work with an agency that will listen to your needs and career goals, then Focus Staff is the right place to be.