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1296例正常胎盘超声分级与孕周关系 被引量:9

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摘要 目的 评价不同孕周胎盘超声分级的分布规律。方法 根据妊娠结果选取 12 96例正常妊娠胎盘图像 ,从孕 13~ 41周 ,计数不同孕周胎盘分级的频率。结果 胎盘分级与孕周密切相关 ,足月妊娠时 83 %为Ⅱ级胎盘 ,17%为Ⅲ及胎盘。结论 正常妊娠成熟胎盘多出现在 35周以后 ,在 35周前出现Ⅲ级胎盘图像 ,应警惕各种病理妊娠出现。
作者 刘智 常才
出处 《中国医学影像技术》 CSCD 北大核心 2000年第12期1093-1094,共2页 Chinese Journal of Medical Imaging Technology
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