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Proceedings Paper

Spin relaxation for laser-pumped hyperpolarized spins
Author(s): Xizeng Wu
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Paper Abstract

In this work it has been found that the conventional spin relaxation equations are not valid for the hyperpolarized spins. New longitudinal relaxation equations for the dipole- dipole coupled hyperpolarized spins have been derived. These new equations predict that the longitudinal magnetization relaxation for hyperpolarized spins is, in general, bi- exponential instead single exponential. They also predict that for dipole-dipole coupled hyperpolarized spins the steady state longitudinal magnetization is larger than the thermal equilibrium magnetization. These findings are useful as the base-line information for accurate analysis of the effects of the paramagnetic sources on relaxation of hyperpolarized spins in living body.

Paper Details

Date Published: 7 August 1998
PDF: 8 pages
Proc. SPIE 3548, Biomedical Optics and Lasers: Diagnostics and Treatment, (7 August 1998); doi: 10.1117/12.317880
Show Author Affiliations
Xizeng Wu, Univ. of Alabama/Birmingham (United States)


Published in SPIE Proceedings Vol. 3548:
Biomedical Optics and Lasers: Diagnostics and Treatment
Junheng Li; James A. Harrington, Editor(s)

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