Medical Graphics Corporation was founded in 1977 by Catherine A. Anderson, a medical technologist, who was the first to introduce computerized diagnostics to lung function testing. In her position as supervisor at the University of Minnesota's cardiopulmonary lab, she saw a need to improve lung function testing for both the patient and the physician. Over the past 30 years, Medical Graphics Corporation's products have evolved into a complete line of diagnostic systems including both software and proprietary physiologic transducers and analyzers sold under the trade name MEDGRAPHICS. This technology is used around the world in hospitals, clinics, and universities to diagnose, treat, and prevent heart and lung disease. Medical Graphics has grown from a graphical software designer to an innovator in complete cardiorespiratory diagnostic systems. Medical Graphics holds more than 20 patents on various technologies used in their cardio-respiratory diagnostic systems.