Fundamentals of Respiratory System and Sounds Analysis

Breath sounds have long been important indicators of respiratory health and disease. Acoustical monitoring of respiratory sounds has been used by researchers for various diagnostic purposes. A few decades ago, physicians relied on their hearing to detect any symptomatic signs in respiratory sounds of their patients. However, with the aid of computer technology and digital signal processing techniques in recent years, breath sound analysis has drawn much attention because of its diagnostic capabilities. Computerized respiratory sound analysis can now quantify changes in lung sounds; make permanent records of the measurements made and produce graphical representations that help with the diagnosis and treatment of patients suffering from lung diseases. Digital signal processing techniques have been widely used to derive characteristics features of the lung sounds for both diagnostic and assessment of treatment purposes. Although the analytical techniques of signal processing are largely independent of the application, interpretation of their results on biological data, i.e. respiratory sounds, requires substantial understanding of the involved physiological system. This lecture series begins with an overview of the anatomy and physiology related to human respiratory system, and proceeds to advanced research in respiratory sound analysis and modeling, and their application as diagnostic aids. Although some of the used signal processing techniques have been explained briefly, the intention of this book is not to describe the analytical methods of signal processing but the application of them and how the results can be interpreted. The book is written for engineers with university level knowledge of mathematics and digital signal processing.

Autorentext

Zahra M. K. Moussavi received her B.Sc. from Sharif University of Technology, Iran in 1987, M.Sc. from the University of Calgary in 1993, and Ph.D. from University of Manitoba, Canada in 1997, all in Electrical Engineering. She then joined the respiratory research group of the Winnipeg Children's Hospital and worked as a research associate for 1.5 years. In 1999, she joined the Biomedical Engineering Department of Johns Hopkins University as a postdoctoral fellow for one year. Following that, she joined the University of Manitoba, Department of Electrical and Computer Engineering as a faculty member, where she is currently an associate professor. She is also an adjunct professor at the TR lab of Winnipeg. Her current research includes respiratory and swallowing sound analysis, postural control and balance, rehabilitation and human motor learning. Dr. Moussavi is a senior member of IEEE, Engineering in Medicine and Biology (EMBS), member of CMBES and International Lung Sound (ILSA) associations. She is also currently the EMBS Chapter Chair, Winnipeg Section.

Inhalt
Anatomy and Physiology of Respiratory System.- The Model of Respiratory System.- Breath Sounds Recording.- Breath Sound Characteristics.- Current Research in Respiratory Acoustics.- Nonlinear Analysis of Lung Sounds for Diagnostic Purposes.- Adventitious Sound Detection.- Acoustic Mapping and Imaging of Thoracic Sounds.