This book presents recent applications and developments in the field of sensors, wireless, circuits, systems, medical signals and medical imaging, covering a wide range of applications for monitoring, treatment and assistance in biomedical applications. This book provides insights into the theory, applications and perspectives relevant to the field of sensors, wireless, circuits and systems, as well as the general algorithms and methodologies behind them. Each chapter provides an enriched understanding of a research topic along with a balanced treatment of the relevant theories, methods or applications. It reports on the latest advances in the field. This book is a good reference for graduate students, researchers, educators, engineers and scientists and contains more than 10 chapters divided into four parts as follows. The first part of the book focuses on wireless sensors. It consists of three chapters. The second part is dedicated to circuits and systems and includes three chapters. The third part deals with research on optimization techniques and consists of three chapters. The fourth part describes several approaches applied to biomedical applications and consists of four chapters.