Simultaneous excitation and acquisition of signal from multiple slices in the RARE sequence (multiplex RARE)
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United States of America Patent
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Mar 12, 2013
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Oct 14, 2010
app pub date -
Apr 1, 2010
filing date -
Apr 8, 2009
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Abstract
A method for RARE magnetic resonance imaging comprising slice selective excitation of two or more slices and of one or more nuclei, followed by refocusing of these slices and application of gradient pulses which cause a division 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 refocusing 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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