37a32476__S__Bureau_of_Labor_Statistics__Job_Duties
[Occupation] Diagnostic Medical Sonographers and Cardiovascular Technologists and Technicians, Including Vascular Technologists [ENTRY-LEVEL EDUCATION] Associate’s degree [2012 MEDIAN PAY] $60,350 [Job Duties] 
Diagnostic medical sonographers and cardiovascular technologists and technicians, including vascular technologists, operate special imaging equipment to create images or conduct tests. The images and test results help physicians assess and diagnose medical conditions. Some technologists assist physicians and surgeons during surgical procedures.
Radiation Therapists : Occupational Outlook Handbook: : U.S. Bureau of Labor Statistics