This course is designed as a continuation of PRE 101. Through discussion and experimentation on energized x-ray units, the students will investigate creating and analyzing the radiographic image. Radiographic density, contrast, detail, and distortion will be studied in depth. Special imaging techniques such as automatic exposure control, mobile radiography, tomography and fluoroscopy will be included. The students will be instructed in computerized and digital imaging and processing of the digital image. Creating exposure charts and solving exposure conversion problems will be included.