Spatially Varying Steady State Longitudinal Magnetization in Distant Dipolar Field-based Sequences
Abstract
Sequences based on the Distant Dipolar Field (DDF) have shown great promise for novel spectroscopy and imaging. Unless spatial variation in the longitudinal magnetization, M_{z}(s), is eliminated by relaxation, diffusion, or spoiling techniques by the end of a single repetition, unexpected results can be obtained due to spatial harmonics in the steady state M_{z}^{SS}(s) profile. This is true even in a homogeneous single-component sample. We have developed an analytical expression for the M_{z}^{SS}(s) profile that occurs in DDF sequences when smearing by diffusion is negligible in the TR period. The expression has been verified by directly imaging the M_{z}^{SS}(s) profile after establishing the steady state. more keywords: magnetic resonance, intermolecular multiple quantum coherence, mesoscale structure, iMQC, DDF
Cite
@article{arxiv.physics/0406045,
title = {Spatially Varying Steady State Longitudinal Magnetization in Distant Dipolar Field-based Sequences},
author = {Curtis A. Corum and Arthur F. Gmitro},
journal= {arXiv preprint arXiv:physics/0406045},
year = {2019}
}
Comments
7 pages, 4 figures, submitted to Journal of Magnetic Resonance