Meeting Banner
Abstract #4517

Imaging Beyond the Homogeneous Radius in Clinical Magnets

Nadine Luedicke Dispenza1, Yanitza Marie Rodriguez2, Robert Todd Constable2,3, and Gigi Galiana2

1Biomedical Engineering, Yale University, New Haven, CT, United States, 2Radiology and Biomedical Imaging, Yale University, New Haven, CT, United States, 3Department of Neurosurgery, Yale University, New Haven, CT, United States

At the edge of the bore, both B0 and gradient fields have nonlinear distortions which typically make imaging impossible beyond a certain FOV. In this work, we show that undistorted imaging without significant loss of SNR can be achieved outside the typical 50 cm imaging volume using nonlinear spatial encoding techniques. Spatial distortions are corrected by incorporating the nonlinearities of the gradients and B0 field in the encoding equation, while intravoxel dephasing information counteracts spurious intensity modulations and blurring in the reconstructed images.

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

Join Here