Body Scanner

Body Scanner
For more than 50 years the simple X-ray phtograph was the radiographer's only tool for seeing inside the human body, but in the last decade new system have been developed, capable of picturing soft tisuses as well as bone in the minutes detail. These body scanner, as they are known, make it possible to diagnose illness and plan surgery or treatmen with greater precicision and more quickly and cheaply than ever before.
Body scanners made their debut in 1972. The X-ray CAT or CT (Computed Axial Tomography), scanners was produce by physicists at the X-Ray unit of EMI and contituted a major technological breaktrought. A CT machine uses X-Rays, but in sophisticated manner. one of the problems with ordinary X-ray machine is that the pictures they give show only the desent body material, such as bone with any clarity. Less dense material, such as muscles, tissue, and tumors, show up only vaguely, because they absorb very little of the X rays passing trought them. But, altought the humen eye finds it difficult to distinguish between these ares of little arsobtion, a computer can be programmed to do the job much better.