Xerographic Tomography

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Abstract
Tomographic depiction using Xerox plates was compared with that of screen film tomography. The Xerox plates entail much higher demands as to the quality of tomographic blurring than screen film combinations. Circular or hypocycloid movements give rise to errors of depiction which are more disturbing in xerographic tomography due to the fact that the screen film combination has such properties as to be unable to record certain spurious signals present in the radiation relief, which appear in the higher-precision recording of the Xerox plates. This indicates that these plates are to be preferred if only the spurious signals can be eliminated. Suitable tomographic movements are described. To counteract the high radiation doses in xerotomography, it is suggested that specially constructed cassettes for simultaneous multisection tomography should be used.

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