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超声断层法确认子宫腔内有胎囊(GS),说明孕卵在子宫内膜上着床,GS的有无、位置、数量、形态、大小、发育情况以及胎芽、胎心等的超声所见,能确切地早期鉴别宫内和宫外妊娠,判定先兆流产的预后,诊断多胎妊娠和葡萄胎,判定妊娠周数和孕卵是否枯萎。通常妊娠6周可以看到明确的GS,但在超声断层非常发达的今天,如仪器性能好,观察仔细,妊娠4周即可确认GS。在门诊从停经为主诉的507例病人,经超声断层法检查结果,妊娠4周确认GS10例(20%),妊娠5周确认者33例,其余464例均在妊娠6周后确认。妊娠4周确认GS的10例中,有2例确诊时间分别为4周又4天及4周又6天;GS大小分别为5×6mm和
Ultrasound tomography confirmed fetal uterine cavity (GS), indicating that the implantation of eggs in the endometrium implantation, GS presence, location, quantity, shape, size, development and fetal buds, fetal heart ultrasound seen , Can accurately early identification of intrauterine and extrauterine pregnancy, to determine the prognosis of threatened abortion, diagnosis of multiple pregnancies and hydatidiform moles, determine the number of weeks of pregnancy and the wilt of pregnant eggs. Usually 6 weeks of pregnancy can see a clear GS, but in today’s ultra-developed ultrasound is good, such as instrument performance, careful observation, pregnancy can confirm the GS 4 weeks. Out of 507 patients who complained of menopause at the clinic, the results of ultrasonography showed that GS10 (20%) were confirmed at 4 weeks gestation, 33 confirmed at 5 weeks gestation, and 464 cases were confirmed at 6 weeks gestation. Two of the 10 confirmed GSs at 4 weeks of gestation had a definite diagnosis of 4 and 4 days and 4 and 6 days, respectively; GS sizes were 5 × 6 mm and