Equivalence of spin-lock and magnetization transfer NMR experiments

Details Equivalence of spin-lock and magnetization transfer NMR experiments Equivalence of spin-lock and magnetization transfer NMR experiments

2012-03-09

arxiv.org/abs/1203.2067v1

Physics

Medical Physics

Scientific paper

We give a solution of the Bloch-McConnell equations that describes the magnetization of coupled spin populations under radio frequency irradiation. We show the equivalence of two different saturation experiments: magnetization transfer and spin-lock. Their steady-state magnetization and the dynamics of both are governed by the same single eigenvalue which turns out to be the relaxation rate in the rotating frame. We show that spin systems coupled by chemical exchange can be described by the proposed solution allowing quantification of pH-dependent exchange rates and metabolite concentration.

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