A simple method for obtaining cross-term-free images for diffusion anisotropy studies in NMR microimaging.
The geometric average of two spin-echo images obtained with opposite polarity diffusion gradients yields cross-term-free images that can be directly compared for diffusion anisotropy. This approach is demonstrated here for free water isotropic diffusion and anisotropic diffusion of water in the phloem system of celery (Apium graveolens).
Cellular and Molecular Biology Group, University of California, Los Alamos, New Mexico 87545.
M
M
Neeman
J P
JP
Freyer
L O
LO
Sillerud
D016880:Anisotropy; D007091:Image Processing, Computer-Assisted; D008279:Magnetic Resonance Imaging / Q000379:methods*; D059828:Plant Cells