History of computed tomography

History of CT scanning technology

The history of X-ray computed tomography (CT) dates back to at least 1917 with the mathematical theory of the Radon transform. In the early 1900s an Italian radiologist named Alessandro Vallebona invented tomography which used radiographic film to see a single slice of the body. It was not widely used until the 1930s, when Dr Bernard George Ziedses des Plantes developed a practical method for implementing the technique, known as focal plane tomography. It relies on mechanical movement of the X-ray beam source and capture film in unison to ensure that the plane of interest remains in focus with objects falling outside of the plane being examined blurring out.

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