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例１孕妇２８岁，孕３８周。超声检查所见：单胎头位，双顶径９．０ｃｍ。胎儿内脏、脊柱、四肢无异常发现。子宫前壁胎盘，Ⅱ级。羊水最大深度７．６ｃｍ，羊水内见一６．８ｃｍ×５．５ｃｍ×３．８ｃｍ近圆形液性暗区（图１），壁薄、光滑整齐，内部透声好，其左前缘与...
Example 1 pregnant women 28 years old, 38 weeks pregnant. Ultrasound findings: single-head position, biparietal diameter 9.0cm. Fetal offal, spine, limbs found no abnormalities. Uterine placenta, Ⅱ level. Amniotic fluid maximum depth of 7.6cm, amniotic fluid see a 6.8cm × 5.5cm × 3.8cm near circular liquid dark area (Figure 1), thin wall, smooth and tidy, the internal sound is good, the left front and. ..