As a cardiac cath lab radiology technologist or cath lab tech, your duties are to prep and monitor a patient during cardiovascular imaging and invasive heart procedures. This procedure can be an angioplasty, an electrophysiology procedure, or involve hemodynamic monitoring. In addition to clinical responsibilities, they must also sterilize tools and maintain a clean laboratory. Qualifications to become a cardiac cath lab radiology technologist or cath lab tech include an associate’s degree and certification. Catheterization technologist is a similar job title.