Spirt B A, Kagan E H, Rozanski R M
AJR Am J Roentgenol. 1979 Nov;133(5):877-81. doi: 10.2214/ajr.133.5.877.
In cases of abruptio placenta, the ultrasound examination may be negative if external bleeding occurs without a large enouth accumulation of blood to be sonographically visible. A positive sonogram may demonstrate either a retroplacental hematoma or a hematoma that has dissected beneath the chorionic membranes. Six cases of abruptio placenta are presented with sonographic and pathologic findings.
在胎盘早剥的病例中，如果发生外出血且血液积聚量未达到超声可显示的足够大程度，超声检查结果可能为阴性。阳性超声图像可能显示胎盘后血肿或已在绒毛膜下扩散的血肿。本文介绍了6例胎盘早剥的超声和病理检查结果。
