Radiology Tech, Radiology Technologist, Radiologic Technologist, Rad Tech, Radiologic Tech, X-Ray Tech, X-Ray Technologist, Cath Lab Tech, Cath Lab Technologist. The Cath Lab Technologist provides healthcare services using cardiovascular, endovascular, and neurovascular imaging and interventional procedures; arterial/venous sheath removals and/or closure devices; and assisting physicians during electrophysiology procedures.