Whether they know it or not, folks who have had an ultrasound or MRI have likely used GE Healthcare's equipment. As the health care unit of diversified giant General Electric, GE Healthcare is a leading maker of diagnostic imaging equipment, such as MRI, ultrasound, and computed tomography (CT) scanners. The company has its fingers in other medical equipment pies as well: It makes surgical and clinical scanning and monitoring systems (such as ECG monitors), as well as imaging contrast agents (dyes) and molecular diagnostic tests. GE Healthcare also develops technology for drug discovery and manufacturing processes, and it makes clinical and financial management software for health care providers.