Powell M C, Buckley J, Price H, Worthington B S, Symonds E M
Am J Obstet Gynecol. 1986 Mar;154(3):565-9. doi: 10.1016/0002-9378(86)90602-2.
Twenty-five women with diagnoses of placenta previa on ultrasound examination underwent magnetic resonance imaging examination. An assessment of placental position and the relationship of the lower placental edge to the internal os was made with both techniques and the results were compared. There was complete correlation of placental localization but significant differences were found in the determination of the degree of placenta previa. This occurred more often with posteriorly situated placentas. Magnetic resonance imaging directly affected management with regard to delivery in seven cases. Magnetic resonance imaging provides a technique capable of accurately assessing placental position and its relationship to the cervix, thereby leading to a reduction in hospitalization and inappropriate operations.
25名经超声检查诊断为前置胎盘的女性接受了磁共振成像检查。使用这两种技术对胎盘位置以及胎盘下缘与宫颈内口的关系进行了评估，并比较了结果。胎盘定位完全相关，但在前置胎盘程度的判定上发现了显著差异。这种情况在胎盘位于后壁时更常发生。磁共振成像在7例病例中直接影响了分娩管理。磁共振成像提供了一种能够准确评估胎盘位置及其与宫颈关系的技术，从而减少了住院时间和不适当的手术。
