[3] Magnetic resonance microscopy refers to very high resolution MRI imaging (down to nanometer scale, in some cases comparable with histopathology).
The term MR microscopy is most widely used by the High Resolution Magnetic Resonance Imaging department at Duke University, headed by Dr. G. Allan Johnson, and the National High Magnetic Field Lab group at AMRIS, University of Florida/Florida State University.
The major barriers for practical MRM include: Magnetic resonance force microscopy (MRFM) has nm-scale resolution.
It improves the sensitivity issue by introducing microfabricated cantilevers to measure tiny signals.
Because the specimen needs to be in a high vacuum at cryogenic temperatures, MRFM can be used only for solid state materials.