Visualization of placental hypocirculation with typical patterns using conventional magnetic resonance imaging: two case reports
Visualization of placental hypocirculation with typical patterns using conventional magnetic resonance imaging: two case reports
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使用传统磁共振成像观察典型模式的胎盘低循环：两个病例报告
DOI：
10.1111/jog.12632
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Kaori Togashi.
中科院分区：
文献类型：
--
作者：
Yuki Himoto;Aki Kido;Sachiko Minamiguchi;Haruta Mogami;Ikuo Konishi;Kaori Togashi.
我们报告了两例临床疑似胎盘循环不良的病例，其证据是整个胎盘的特定半傅立叶采集单次激发快速自旋回波（HASTE）磁共振结果。患者1是一例妊娠高血压导致的胎儿生长受限病例，而患者2发生了不一致的双胎妊娠伴胎儿生长受限并发症，较小的双胎中发生了脐带被膜插入。在这两种情况下，HASTE图像显示信号强度明显降低，胎盘中心区域存在高强度信号点。在双胎妊娠病例中，较小双胎胎盘中的低强度信号区域远低于较大双胎。病理学结果未能支持或解释这些观察结果。HASTE图像可反映循环不良引起的母体血液和绒毛分布的代偿性改变。总之，我们的结果表明HASTE成像可能是胎盘循环不良可视化的一种有用方法。
We report two cases of clinically suspected placental hypocirculation, as per evidenced by specific half‐Fourier acquisition single‐shot turbo spin‐echo (HASTE) magnetic resonance findings of the whole placenta. Patient 1 was a case of fetal growth restriction caused by pregnancy‐induced hypertension, while patient 2 experienced a discordant dichorionic diamniotic twin pregnancy with fetal growth restriction complication with a velamentous insertion of the umbilical cord in the smaller twin. In both cases, HASTE images showed noticeably decreased signal intensity with high‐intensity signal spots present in the central region of the placenta. In the twin pregnancy case, the low‐intensity signal area in the placenta of the smaller twin was much lower compared to that of the larger twin. Pathological findings failed to support or explain these observations. HASTE images might reflect compensatory alternation of the distribution of maternal blood and villus caused by hypocirculation. In conclusion, our results suggest that HASTE imaging might be a useful approach for the visualization of placental hypocirculation.