Low-field He-3 nuclear magnetic resonance in human lungs

Abstract : We report the first in vivo NMR experiments performed with hyperpolarised He-3 gas at 0.1 T. Hyperpolarisation is achieved by laser optical pumping of He-3 atoms in the metastable triplet state. Longitudinal relaxation times of nuclear magnetisation of the order of 35 s are measured in human lungs. Very long transverse relaxation times of a few seconds are also observed. This work establishes the possibility of magnetic resonance imaging of human lung airways at low field.
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  • HAL Id : hal-02018481, version 1


L. Darrasse, G. Guillot, Pierre-Jean Nacher, G. Tastevin. Low-field He-3 nuclear magnetic resonance in human lungs. Comptes rendus de l’Académie des sciences. Série IIb, Mécanique, physique, chimie, astronomie, Elsevier, 1997, 324 (11), pp.691--700. ⟨hal-02018481⟩



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