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Hi? recently I try to use the bloch equation to simulate the magnetization M's variation, i used the perfect 90-degree excitation ,and the magnetization became [1 0 0] from [0 0 1] immediately . But i want to know if the excitation's width is not zero, then what's the relationship between the pulse width and the echo time.

asked Apr 18 '13 at 18:51

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da hsu

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