题目内容
The width of the envelope of frequencies excited by an RF pulse is called the:
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According the Bloch equation for Z-magnetization, the rate of change of Z-magnetization is:
Longitudinal relaxation generally occurs:
In a 90 – tau – 180 – tau spin echo sequence, the time between the 90 degree excitation pulse and the spin echo maximum is called:
A 90 degree pulse aligned along the X-axis is applied creating transverse magnetization. In the rotating frame of reference, if a 180 degree pulse aligned along the X-axis is then applied after a time tau, the vectors will rotate:
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