Abstract
A convolution-backprojection formula is deduced for direct reconstruction of a three-dimensional density function from a set of two-dimensional projections. The formula is approximate but has useful properties, including errors that are relatively small in many practical instances and a form that leads to convenient computation. It reduces to the standard fan-beam formula in the plane that is perpendicular to the axis of rotation and contains the point source. The algorithm is applied to a mathematical phantom as an example of its performance. 1.
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Authors
L.A. FeldkampLloyd Craig DavisJ.W. Kress
Topics
Medical Imaging Techniques and ApplicationsAdvanced Radiotherapy TechniquesAdvanced MRI Techniques and Applications
About
PublishedJun 1, 1984
TypeArticle
Citations6,341
References14