A.400ms B.800ms C.1000ms D.1200ms E.1500ms
A.使質(zhì)子群磁化向量轉(zhuǎn)向負(fù)Z軸 B.使質(zhì)子群磁化向量失去相位 C.使質(zhì)子群磁化向量開(kāi)始協(xié)定動(dòng) D.使質(zhì)子群磁化向量頻率加快 E.使質(zhì)子群磁化向量重聚
A.RF脈沖頻譜較寬 B.容積成像 C.RF激勵(lì)全容積 D.適合高場(chǎng)強(qiáng)MR E.采集時(shí)間長(zhǎng)