This book constitutes the thoroughly refereed post-conference proceedings of the 4th
International Joint Conference on Biomedical Engineering Systems and Technologies BIOSTEC 2011
held in Rome Italy in January 2011. The 27 revised full papers presented together with one
invited lecture were carefully reviewed and selected from a total of 538 submissions. The
papers cover a wide range of topics and are organized in four general topical sections on
biomedical electronics and devices bioinformatics models methods and algorithms bio-inspired
systems and signal processing health informatics.