Medical imaging technologies play more and more important roles not only in the diagnosis and treatment of diseases, but also in disease prevention, health checkup, major disease screening, health management, early diagnosis, disease severity evaluation, choice of treatment methods, treatment effect evaluation, and rehabilitation. The status of medical imaging technologies has increased continuously in healthcare applications. This book presents a comprehensive overview of Medical image Enhancement. Potential topics includes algorithms for medical image contrast enhancement and Enhancement, Algorithms for medical image resolution enhancement, reviews of image enhancement, discusses the use of level set approach for segmentation.