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METHOD UTILIZING COMBINED,INTERLEAVED PULSE SEQUENCES FOR REDUCING MOTION ARTIFACTS IN COMPUTED T1,T2 AND NMR IMAGING
METHOD UTILIZING COMBINED,INTERLEAVED PULSE SEQUENCES FOR REDUCING MOTION ARTIFACTS IN COMPUTED T1,T2 AND NMR IMAGING
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机译:利用组合的交错脉冲序列减少计算的T1,T2和NMR成像中的运动伪像的方法
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摘要
A method is provided utilizing combined, interleaved pulse sequences for reducing motion artifacts in computed T.sub.1, T.sub.2, and M.sub.0 (spin density) NMR images. The imaging data is acquired using a repetition of a sequence made up of RF and magnetic-field-gradient pulses. Each repetition of the sequence includes at least two steps of exciting nuclear spins so as to produce a corresponding number of NMR signals. The NMR signals are sampled in the presence of a magnetic-field gradient for encoding spatial information into the NMR signals. Each repetition of the sequence includes at least two different sequence repetition times such that the NMR signals are sampled at approximately the same average time relative to any sample motion.
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