Of the 59 cases of placenta abruption,52 cases (88.1%)were detected by ultrasound,7 cases (11.9%) were misdiagnosed(2 case with negative findings,5 cases with faulty findings) .

• 5 9例中 ；超声检出胎盘早剥 5 2例 ；占 88.；1%25；超声诊断错误 7例 (5例误诊、2例漏诊 )；占 11