| 简介 |
A Method for RARE magnetic resonance imaging comprising slice selective excitation of two or more slices of one or more nuclei, followed by refocusing of these slices and application of gradient pulses which cause a diversion of the signal into spin echoes and stimulated echoes, is characterized by application of refocusing slice selective RF pulses, which are placed to fulfill the echo-spacing CPMG condition for each slice and by arrangement of gradient pulses which cause the phase accumulated by spins in each slice between two consecutive RF pulses corresponding to that slice to be equal, thus fulfilling the CPMG phase accumulation condition. Thereby, the obtainable signal can be increased and stabilized. |
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