DIFFUSION AND PERFUSION IN HIGH-RESOLUTION NMR IMAGING AND MICROSCOPY

Diffusion and perfusion phenomena under strong gradient fields (∼100 G/cm) are examined in high resolution nuclear magnetic resonance (NMR) imaging and microscopy, where diffusion‐associated signal attenuation predominates over T1 and T2 relaxation decays. Image contrast based on the diffusion and microcirculation is discussed with experimental results obtained with a 7.0‐T microscopy system. Ultimate resolution limit due to diffusion is investigated in high resolution NMR imaging and microscopy. © 1991 Academic Press, Inc. Copyright © 1991 Wiley‐Liss, Inc., A Wiley Company