Meeting Banner
Abstract #4681

A Novel Three-Dimensional k-Space Reconstruction Method by Spherical Fourier Transform

Mojtaba Shafiekhani1, Vahid Ghodrati2, and Abbas Nasiraei-Moghaddam1
1biomedical engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran (Islamic Republic of), 2Department of Radiological Sciences, University of California Los Angeles, Los Angeles, CA, United States


The two- and three-dimensional radial trajectory has been widely used due to its lower sensitivity to movement and flow and also shorter acquisition time. Re-gridding, the dominant approach for radial data reconstruction, suffers from severe artifacts at high acceleration rates. This study proposes a mathematical approach based on spherical harmonics to reconstruct images in the spherical coordinates without any interpolation in the frequency domain, unlike the conventional re-gridding algorithm. The feasibility of the proposed algorithm for reconstructing the images on both 3D Shepp-Logan and brain digital phantoms was shown.

This abstract and the presentation materials are available to members only; a login is required.

Join Here