This site describes the sophisticated tools and techniques used in medical imaging. Photos and short descriptions help students understand the slitlamp microscope, PET scan, X ray, angiography, fluoroscopy, ultrasound, CT Scan, and fiber optic imaging. By rolling over a black and white image, students will be able to see an introductory passage that describes how each tool operates and how doctors and scientists use them. The site also describes the conditions in which each tool is best suited, and the history behind each tool.