Medical imaging modalities: A survey

Now a day's Medical Imaging is playing more and more important role in many clinical procedures and in detecting and diagnosing different human diseases. The interior parts can be reached without really opening too much of the body. The three dimensional view of the body can be viewed and imaged by Ultrasound, Computed Tomography(CT) Scanner and Magnetic Resonance Imaging which took over X-Ray imaging. By using the CT Scanner, body's ailing region can be recognized with ease and this technique cause no pain to the patient. Ultrasound imaging is mostly used to detect and classify abnormalities of the glands. The Ultrasound Imaging is less expensive, invasive, and very easy to use. The Ultrasound Imaging can be done by many image processing algorithms which consist of image pre-processing, segmentation, feature extraction, feature selection and classification. The above mentioned techniques have been summarised in this paper.