医学
磁共振成像
胎儿
矢状面
超声波
解剖
放射科
核医学
怀孕
生物
遗传学
作者
Shirley McCarthy,R A Filly,D D Stark,Hedvig Hricak,Michael Brant‐Zawadzki,P W Callen,C B Higgins
出处
期刊:Radiology
[Radiological Society of North America]
日期:1985-02-01
卷期号:154 (2): 427-432
被引量:127
标识
DOI:10.1148/radiology.154.2.3966129
摘要
Nine patients who were 34-36 weeks pregnant underwent magnetic resonance (MR) imaging. Sagittal images using spin echo technique (TR 2.0 sec, TE 28 msec) were optimal for delineating fetal anatomy. The fetal cardiovascular, pulmonary, and central nervous systems were depicted in all cases. The heart and major vessels were readily seen due to the natural contrast of flowing blood. The intensity of the fluid-filled lungs greatly increased with a longer TR or TE, delimiting thorax from liver. The brain was relatively featureless due to the lack of gray-white matter differentiation. The umbilical cord within the amniotic fluid and its insertion into the placenta and fetus was identified in all cases. MR is a new modality for fetal imaging that offers tissue-characterization information that complements the superior anatomic detail of ultrasound scanning.
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