Image processing was helpful towards techniques,analysing and research issues in medical imaging and pharmaceutical tests. Study of the internal or external structure of human body,observations of medical diagnosis,research related to various diseases and preparing datasets of normal and abnormal images in detection (i.e. tumours) are in medical imaging. Various medical modalities were used in different medical imaging techniques. This paper is a review of various feature extraction approaches in medical imaging. © 2016,International Journal of Pharmacy and Technology. All rights reserved.