To optimize ultrasound and doppler signs for diagnosis of placenta accrete. prospective observational study. The method is to observe 30 pregnant females who had anterior low lying placenta or placenta previa with previous cesarean section were examined by ultrasound and Doppler at 20-24 wks and followed up every four weeks till termination of pregnancy by cesarean section for gray scale and colour Doppler signs of placenta accrete. The study resulted in " loss of retroplacental clear space" sign was found in 28 patients () at 28 weeks of gestation and in all patients (100%) at 32 and 36 wks of gestation. Also in Doppler signs,"placental lacunae" sign was found in 28 cases () at 32 wks and 30 cases () at 36 wks of gestation. | Study of different gray scale and colour doppler ultrasonographic findings for diagnosis of placenta accreta
