Lorenzo Leija-Salas has studied in the specialties of; Engineering in Electronics at the Technological Institute of San Luis Potosí, Mexico (1978), Master of Science in Bioelectronics at the Cinvestav of the IPN, Mexico (1981), PhD in Sciences in Bioengineering in the University of Nancy, INSERM U284, France (1989). Since 1978 he has been working on the design and development of biomedical instrumentation in the Bioelectronics group of Cinvestav in Mexico. In his professional experience, he has worked in the design of instrumentation related to Intensive Care (UCI), Cardiology, Telemetry, Rheology, Biosignal Processing, and Prosthetics, and in recent years, his lines of work are the medical applications of Ultrasonic and Radio Frequency Technologies, as well as the processing of biomedical signals for rehabilitation. He has projects supported with funds from Mexico and International funds, and cooperative relations with more than 40 laboratories in America and Europe.