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重视胎儿MRI的发展 被引量:4

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摘要 MRI以其无辐射、高组织信号对比、扫描范围大及不受扫描角度、胎体深度、羊水量、孕妇的体态和胎位的影响等优点,已成为胎儿产前不可或缺的重要影像检查方法,是超声产前检查的最佳辅助方法.MRI在产科领域的应用可回溯到1983年,一开始其主要是对产妇产道、骨盆腔及胎盘进行评估[1-3].早期,胎儿MRI扫描时间较长,为了追求影像的清晰度与诊断的可靠性,避免胎动而造成伪影,临床上往往借助镇静剂以减少胎动[4].到了1994年,亚秒(sub-second)超快速MRI扫描技术(single-shot rapid acquisition sequence with refocused echo)发明之后[5],MRI在胎儿影像检查方面的应用发生了革命性的进展.亚秒的扫描方式“冻结”了胎动的瞬间,提供清晰且可靠的胎儿MR影像[6],从此,掀开了现代胎儿MRI发展的新篇章.
作者 郭万祐
出处 《中华放射学杂志》 CAS CSCD 北大核心 2014年第12期969-970,共2页 Chinese Journal of Radiology
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