Transverse Axial Tomographic Unit, Italy, 1957

Made:
1957 in Geneva and Turin

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Transverse Axial Tomographic Unit by Zuder of Turin, 1957

This X-ray unit can locate and then show in 3-D the size and site of a tumour prior to radiotherapy. It was used for cancer research studies at the Holt Radium Institute at the Christie Hospital in Manchester. Transverse axial tomography was a complex process which was restricted to specialist departments such as the Holt Institute. The Institute is still at the forefront of medical research.

Tomography originated in the 1930s. The technique for obtaining radiographs of horizontal sections of the thorax or trunk was patented in 1937 in the UK by William Watson. Italian radiologist Alessandro Vallebona (1899-1987) described a similar technique he called ‘X-ray transverse axial stratigraphy’, also in the 1930s. Vallebona had an X-ray source and a film running in opposite directions around a patient. Only those lying in the plane of rotation were sharply focused. They represented a ‘slice’ of the body.

This machine was made by Zuder of Turin. Tomography was much used as a diagnostic tool until the late 1970s when it was replaced by the Computed Tomography (CT) scanner developed by Godfrey Hounsfield at EMI.

Details

Category:
Radiomedicine
Object Number:
1991-431
Materials:
metal and plastic
type:
transverse axial tomography scanner
credit:
Christie Hospital and Holt Radium Instit

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