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Can you schematically explain; 1.)Spin Echo Imaging Methods 2.) Gradient Echo Imaging Methods

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Electrical Engineering

Canyou schematically explain;
1.)Spin Echo Imaging Methods
2.) Gradient Echo Imaging Methods

Answer & Explanation Solved by verified expert
4.3 Ratings (617 Votes)
SPIN ECHO IMAGING METHODThe spin echo imaging sequences can be easily implemented andthe parameters can be easily varied Due to difference in T1 T2tissue or proton density contrast the MR contrast variesA simple form can be explained that consists of RF pulse series of90 and 180All the individual spins are brought in phase because of themagnetization caused by the 90 RF pulse DEphasing occurs becauseof T2 effectie imhomogeneities in the magnetic field The trueT2 effect of spinspin interaction also causes dephasingTo negate the spin 180 RF    See Answer
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