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超声波断层法(以下简称超检)在诊断胎儿发育状态及早期发现妊娠异常上已为不可缺少的诊断方法之一。其优点是安全、方便、不需其他复杂的设备,普遍应用于筛选异常妊娠。我们对妊娠初、中、后期的所有孕妇均进行此项检查,以作为保健指导的依据,在产前管理上发挥了积极作用。一、检查时间和次数第一次检查应在妊娠8～10周,确定胎儿是否存活,妊娠周数及妊娠是否异常。第二次检查应在妊娠16～20周,查明胎儿发
Ultrasound tomography (hereinafter referred to as the ultra-test) in the diagnosis of fetal development and early detection of abnormal pregnancy has been an indispensable diagnostic method. Its advantages are safe, convenient, without other complex equipment, commonly used in screening for abnormal pregnancy. We conducted this test on all pregnant women in the first, second and third trimester of pregnancy as a guide to health care and played an active role in prenatal management. First, check the time and frequency The first check should be in pregnancy 8 to 10 weeks to determine whether the fetus survived, the number of weeks of pregnancy and pregnancy is abnormal. The second check should be 16 to 20 weeks of pregnancy, identify the fetus