随着高分辨超声仪的使用,阴道超声检查可以使子宫颈和子宫下段的图像显示更加准确、清晰, 尤适于膀胧未充盈或过度肥胖者。目前提倡用阴道超声检查作为子宫下段和宫颈的一种可靠的估计方法。对132例低危孕妇使用阴道超声测量宫颈的宽度和长度,阴道探头频率SMH:或7.SMHz,旨在取得妊娠期宫颈宽度和长度的规范数据,这些数据对预 With the use of high-resolution ultrasound, vaginal ultrasound can make the cervix and lower uterine segment of the image display more accurate and clear, especially for those who are not bladder full or over-obesity. Vaginal ultrasound is currently advocated as a reliable estimation of the uterine segment and cervix. 132 cases of low-risk pregnancy using vaginal ultrasound to measure the width and length of the cervix, vaginal probe frequency SMH: or 7.SMHz, designed to obtain the standard data of cervical width and length of pregnancy, these data on the pre-