Single-Sequence Multi-Slice NMR in Strong Gradient Magnetic Fields

Аннотация

We describe and apply a scheme to obtain nuclear magnetic resonance (NMR) signals from multiple regions in space with a single pulse sequence in systems with strong, usually unavoidable, gradient magnetic fields. This is accomplished with multiple frequency irradiation and reception. Applications described include dual-slice NMR of a fluid to enhance S/N, T₂ measurements of two different samples, and efficient T₁ measurement sequence by interleaving shorter delays within a longer delay for different slices.