Relaxation

Factors affecting t1 relaxation time

Factors affecting t1 relaxation time
  1. What affects T1 relaxation time?
  2. What are the two factors that affect T1 and T2 relaxation?
  3. What affects relaxation times?

What affects T1 relaxation time?

T1 relaxation is fastest when the motion of the nucleus (rotations and translations or "tumbling rate") matches that of the Larmor frequency. As a result, T1 relaxation is dependent on the main magnetic field strength that specifies the Larmor frequency. Higher magnetic fields are associated with longer T1 times.

What are the two factors that affect T1 and T2 relaxation?

Factors affecting T1 and T2 relaxation times of different tissues are generally based on molecular motion, size and interactions.

What affects relaxation times?

Experimental conditions such as temperature and magnetic field affect the relaxation time. The relaxation time is also magnetic field dependent (fig. 27) so the relaxation time measured on a 300 MHz NMR instrument will be different than that measured on a 600 MHz instrument.

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