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Proceedings Paper

An Efficient Scanning/Sampling Method for Echo Planar Magnetic Resonance Imaging
Author(s): Mehrdad Soumekh
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Paper Abstract

This paper presents an efficient spiral scanning/sampling method and its associated reconstruction algorithm for echo planar Magnetic Resonance Imaging (MRI) systems. The spiral scan data are represented in terms of evenly spaced samples from a nonlinear two-dimensional transformation of the Cartesian spatial frequency domain. This transformation enables us to use unified Fourier reconstruction sampling principles [5] to obtain an accurate reconstruction based on a set of constraints imposed on the spiral parameters. The results are then utilized to develop efficient sampling strategies for spiral scans. Sampling efficiency for spiral data, analogous to the sampling efficiencies of hexagonally and rectangularly sampled data, is defined. A sampling scheme on a spiral is introduced that possesses a uniform sampling efficiency comparable to the sampling efficiency of rectangularly sampled data.

Paper Details

Date Published: 25 May 1989
PDF: 12 pages
Proc. SPIE 1092, Medical Imaging III: Image Processing, (25 May 1989); doi: 10.1117/12.953296
Show Author Affiliations
Mehrdad Soumekh, State University of New York at Buffalo (United States)

Published in SPIE Proceedings Vol. 1092:
Medical Imaging III: Image Processing
Samuel J. Dwyer; R. Gilbert Jost; Roger H. Schneider, Editor(s)

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