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Transvaginal two-dimensional, color flow Doppler studies in early pregnancy


Pulsed Doppler in the 6 weeks before the spectrum was a single-phase, 7 weeks after biphasic. 88 cases can be measured at 7 weeks to the umbilical artery, 8 weeks,[link widoczny dla zalogowanych], all patients can be detected in recent weeks, some of l2 began umbilical artery diastolic blood flow. All after 9 weeks of fetal cerebral artery blood flow can be measured, 12 weeks a very small number of cases of cerebral artery diastolic blood flow appeared to discuss 1. TVs early embryonic structure: early TAS2 week ,[link widoczny dla zalogowanych], 5 weeks of pregnancy can be observed to a small capsule, 5 to 6 were seen when the pregnancy sac rejection. Normal pregnancy, gestational sac 90 when the capsule reached l0ram visible yolk sac, 15ram can be seen when the group 3 and 2 cases of abortion, not quite the whole fake pregnancy intrauterine sac without yolk sac, suggesting that the yolk sac gestational sac appears as an early embryo indicates Yi survival of one of the signs; to be effective, except false pregnancy ectopic pregnancy and intrauterine sac; gestational sac to 15mm, the still no yolk sac, early detection of pregnancy Table lTVCD take the side of the RI values of uterine action Wing Pro ±) 25 Table 2TVCD Detection of early pregnancy trophoblastic blood flow RI values of Table 3TVCD luteal blood test pregnancy tips pregnancy RI value of the poor prognosis. 2. TVs early pregnancy of fetal structure: 7 weeks pregnant when the fetus can be observed in the sagittal contours of curved, 8 ~ l0 weeks of the fourth ventricle observed in the fetus,[link widoczny dla zalogowanych], face, jaw, head track and measure +9 ~ l2 weeks of the fourth ventricle can be observed to the fetal long bones, fingers, toes spine, four-chamber heart, this group observed the time of fetal structural reports and Tritsh match two weeks earlier than the TAS, and the fine structure is more clear. TVS early pregnancy study the structure of normal fetuses, the early diagnosis of 26 children a variety of deformities Yi off to study embryology ultrasound is a promising diagnostic tool item. 3, TVCD observed Sapporo flow of early pregnancy: pregnancy over the years,[link widoczny dla zalogowanych], the understanding of blood flow only in late pregnancy on Tv ('D applications: r clinical, so that people on the early pregnancy placenta of the uterus, placenta Yi two children awareness of recycling can be cho results show that this group can be observed in all cases TVCD the bilateral uterine arteries, and can show changes in uterine artery diastolic blood flow, with the growth of pregnancy, diastolic blood flow gradually increased, R1 decreased gradually, the Features and abroad reported previously that the phase A double ring sign. intrauterine pregnancy as a reliable body of Notes of the 'double loop of the question, the dark area as chorionic hemorrhage TVCD observation that decidual and double-loop end of the package decidual bleeding between the district, in fact, closely surrounding the chorionic sac Shí around the rich, the trophoblast blood circulation of the blood flow characteristics has a wealth of diastolic flow, resistance was low. In pregnant 5 can be measured weekly, R1 at 0.40 ± 0.02. lower AsimKalljak reports. trophoblast in the house to the nozzle flow measured can also be used as a reliable diagnosis of early signs of pregnancy. this group of patients detected only 78 of pregnancy luteal blood flow, the spectrum shape and flow similar to the trophoblast,[link widoczny dla zalogowanych], RI was 0.44 ± 0.0l7, higher than the trophoblastic blood flow. dichotoma AsimKaujak measured values reported in the same TVCD 5 to 6 weeks pregnant and children observed the Lord Yi the sound spectrum with twisted arterial Medicine I996 on l2 Lane 3 showed a single-phase, 7 weeks later was like a phase. umbilical artery were subsequently lived 7 to 9 weeks after the bite test can be measured flow to the fetal chest artery Sapporo small number of cases to 12 weeks can be measured fetal umbilical, preserved diastolic dynamic complexes have common features of the spectrum is 1 to presume 1l} ji 『You Shu Zhang of blood.fingers in the eyes of gynecologists More articles related to topics：


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