Molecular theory of field-dependent proton spin-lattice relaxation in tissue.

  title={Molecular theory of field-dependent proton spin-lattice relaxation in tissue.},
  author={Bertil Halle},
  journal={Magnetic resonance in medicine},
  volume={56 1},
  • Bertil Halle
  • Published 2006 in Magnetic resonance in medicine
A molecular theory is presented for the field-dependent spin-lattice relaxation time of water in tissue. The theory attributes the large relaxation enhancement observed at low frequencies to intermediary protons in labile groups or internal water molecules that act as relaxation sinks for the bulk water protons. Exchange of intermediary protons not only transfers magnetization to bulk water protons, it also drives relaxation by a mechanism of exchange-mediated orientational randomization (EMOR… CONTINUE READING

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