Question

Any two RF pulses produce an Echo that is called Hahn Echo (if RF flip angles = 90) or Stimulated Echo (if RF flip angles < 90).

A. True
B. False

Answer 1

A Hahn Echo or Stimulated Echo is generated when two radio frequency (RF) pulses are used, depending on the RF flip angles.

Step-by-step explanation:

The question asked is: Any two RF pulses produce an Echo that is called Hahn Echo (if RF flip angles = 90) or Stimulated Echo (if RF flip angles < 90).

A. True

B. False

The statement is True.

A Hahn Echo or Stimulated Echo is generated when two radio frequency (RF) pulses are used. The type of echo produced depends on the RF flip angles. If the RF flip angle is 90 degrees, it is called a Hahn Echo. If the RF flip angle is less than 90 degrees, it is called a Stimulated Echo. Both types of echoes result from the interaction of the RF pulses with the spin system in a sample, and they provide valuable information in magnetic resonance experiments.