An Improved Interpolation Technique in Direct Two-Dimensional Fourier Transform Method for X-Ray CT

Noboru NIKI  Masaru YOSHIDA  Yoshizo TAKAHASHI  

IEICE TRANSACTIONS (1976-1990)   Vol.E69   No.1   pp.9-12
Publication Date: 1986/01/25
Online ISSN: 
Print ISSN: 0000-0000
Type of Manuscript: LETTER
Category: Medical Electronics and Bioengineering

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The direct two-dimensional Fourier transform method enables a fast image reconstruction. The key problem of this method is in the interpolation from polar to Cartesian samples. In this paper we present a more efficient interpolation method than the previous one without decreasing the accuracy of the reconstructed image.