This course introduces topics that include the essential physics of diagnostic radiology and its application in modern medicine, Measures of Image Quality, Digital X-Ray Imaging, Fluoroscopy Systems, Mammographic Systems, Image Processing and Reconstruction, CT Image Quality, Dose and Protocols, Basic Ultrasound Imaging and Display, MRI: Image Formation, PET - SPECT /PET-CT/Image Quality, Gamma Cameras / Image Quality, Radiation Dose and Risk, Estimating Cancer Risk from Imaging Procedure.