T1 measurement nmr

1. How do you measure T1 in NMR?
2. How is T1 signal measured?
3. What does T1 mean in NMR?
4. What is the difference between T1 and T2 NMR?

How do you measure T1 in NMR?

A rough estimation of the T1 value can be calculated from the null-point value by using T1=tnull/ln2. sweep width SWH, acquisition time aq and other parameter if necessary.

How is T1 signal measured?

The method most commonly used to determine T₁ is the inversion-recovery experiment, where first a 180° pulse is applied, so the magnetization goes from z to -z, followed by a time t (during this time the magnetization relax to z), and the final 90° pulse flips the magnetization from z axis to xy plane to be detected ( ...

What does T1 mean in NMR?

₁. Longitudinal or spin-lattice relaxation (T₁) is the mechanism by which an excited magnetization vector returns to equilibrium along the axis of the static applied magnetic field (conventionally shown along the z-axis, fig. 6).

What is the difference between T1 and T2 NMR?

T2 is tissue-specific and is always shorter than T1. Transverse relaxation is faster than longitudinal relaxation. T2 values are unrelated to field strength.