Objective To investigate the sonographic features of placenta circumvallata, and to evaluate the value of ultrasonography in placenta circumvallata.
目的探讨轮状胎盘的声像图特点，评价超声对轮状胎盘的诊断价值。
Objective To investigate the sonographic features of placenta circumvallata, and to evaluate the value of ultrasonography in placenta circumvallata.
目的探讨轮状胎盘的声像图特点，评价超声对轮状胎盘的诊断价值。
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