Computed tomography (CT) has evolved into an indispensable imaging method in clinical routine. It was the first method to non-invasively acquire images of the inside of the human body that were not biased by superposition of distinct anatomical structures. This is due to the projection of all the information into a twodimensional imaging plane, as typically seen in planar X-ray fluoroscopy.Therefore, CT yields images of much higher contrast compared with conventional radiography. During the 1970s, this was an enormous step toward the advance of diagnostic possibilities in medicine.


Projection Angle Radial Velocity Component Projection Shadow Gantry Tilt Modern Compute Tomography 
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© Springer-Verlag Berlin Heidelberg 2008

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