Pressure oscillations in biomedical diagnostics and therapy The intent of this book is to inform the reader about therapeutic and diagnostic methods primarily focusing on the cardiovascular and pulmonary systems that utilize acoustics (mechanical wave motion). Basic background in relevant acoustic theory and specific technical information associated with medical applications are provided. Low frequency acoustics (pressure oscillation) and some aspects of ultrasound (radiation force) are reviewed. The book aims to link pressure oscillation (PO) and biomedical diagnostics therapy for scholars practitioners. The initial chapter covers wave theory and its usefulness in imaging diagnostics and therapy. The remainder is broken into two parts: imaging and diagnostics and lung therapy. Each part translates the wave thread through discussion application of vibrations oscillations and or pressure. Wave theory is presented as a relevant and unique model that if understood harnessed will improve treatments for patients suffering from diseases of the arteries lungs. The areas of application covered in this text are far reaching in society. Arterial disease sleep apnoea asthma and respiratory distress syndrome are diagnoses with continuous interest and desire to improve quality of life as well as life expectancy for patients. A better understanding of wave application in these areas potentially improves treatment at the practitioner level and opens doors to further investigate these diseases from a researchers perspective