Human thirst for exploring their body's internal structure for a long time, but it was the invention of CT and MRI technology which appeared until in 1970, that made the desire of people exploring the internal data of their bodies come true. And the basic method so-called chromatography imaging rely on that series of 2-dimension CT image or MRI image reorder three dimensional human structures, thus realized human visible on exploring the internal structure of it's body. Chromatography imaging

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... chnology, which is acquiring the plane images of objects by cutting the object with a group parallel planes. Firstly, getting each parallel's images of these objects, secondly, superimposing these graphic images, then 3-dimension stereo image of the object would be measured. This paper is intended to introduces mathematical principles on medical apparatus of imaging-diagnose, so as to help people understand "In essential, 'the high-technology' is a kind of mathematical technique" profoundly.