In situ proton stray-field (STRAFI) nuclear magnetic resonance (NMR) imaging of diamagnetic samples in simulated microgravity is described. The magnetic field gradient at the edge of the superconductive coil in the magnet of a NMR spectrometer is exploited to levitate diamagnetic samples and, at the same time, obtain their corresponding one-dimensional NMR images. Proton T2 (spin-spin relaxation time)/ diffusion-weighted profiles of samples under simulated microgravity conditions are acquired with a solid-echo radiofrequency pulse sequence. Since water is a diamagnetic main constituent substance of living systems, the methodology described could be useful to monitor non-destructively changes in the NMR properties of water protons induced by simulated microgravity and magnetic forces. Furthermore, this approach may be used to observe other NMR-sensitive nuclei of interest, e.g., fluor-19, phosphorous-31, carbon-13, etc.


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    Title :

    Proton magnetic resonance imaging of specimens in simulated microgravity


    Additional title:

    Protonen-Kernspintomographie von Proben unter simulierter Mikrogravitation


    Contributors:


    Publication date :

    2009


    Size :

    6 Seiten, 5 Bilder, 16 Quellen




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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