Organizations Expectations Behavioral Attributes: The following behavioral attributes are required: achievement motivation, concern for order, flexibility, initiative, self-confidence, customer service oriented, interpersonal effectiveness, teamwork, analytical thinking and information seeking. Required Licenses Credentialed as a Registered Diagnostic Cardiac Sonographer (RDCS) through the American Registry for Diagnostic Medical Sonography or as a Registered Cardiac Sonographer (RCS) through Cardiovascular Credentialing International.