Question - 1
What is the difference between spin echo, multi-spin echo, and fast spin echo?
Question – 2
I know long TR/TE gives T2-weighting and short TR/TE gives T1-weighting, but I don't understand why. Can you explain?
Question – 3
Long T1 materials are dark on T1-weighted images, but long T2 materials are bright on T2-weighted images. And vice versa. Why don't these behave the same way?
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