Abstract: The probing of the human body is done using different modalities of medical imaging. The explications of various images require different methods of image processing which enhance their visual interpretation. These image analysis methods may provide images for different application using automated or semi-automated methods. The processed images may be widely used for data mining, feature selection etc by retaining the underline information and eliminating the irrelevant features. These techniques do not focus on the acquisition of the images. Computations and analysis of various images is the main thrust of MIP (Medical Image Processing) techniques. In general MIP can be categorised further into different physiological modelling or segmentation or registration of the image .This paper presents a survey on various feature selection methods used in medical imaging wherein most of the techniques and methods like Screening, Scanning, Selecting, etc. are summarized.