1. Homonuclear J-resolved spectroscopy uses the spin echo pulse sequence. 2. This transverse magnetisation refocuses to form a spin echo at a time " T" 3. The spin echo case is referred to as a type of'tilted projection measurement '. 4. E ( the spin echo maximum ), phase only encodes spatial location in the Y direction. 5. In the spin echo effect, it is physically possible to induce time reversal in an interacting system of spins. 6. The spin echo technique is more useful when the spins have dephased more significantly such as in the animation below: 7. When protons are diffusing, the sequence of spin echo amplitudes is affected by inhomogeneities in the permanent magnetic field. 8. A spin echo experiment can be used to reverse time-invariant dephasing phenomena such as millimeter-scale magnetic inhomogeneities. 9. This results in an additional decay of the spin echo amplitudes that depends on the echo spacing 2 \ Delta t. 10. Gated subtraction fast spin-echo : An imaging technique that subtracts two fast spin echo sequences acquired at systole and diastole.
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