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1中孕期超声筛查的目的中孕期超声筛查的目的包括:检出多胞胎,确定绒毛膜和羊膜的数目。通过胎儿生物参数[双顶径(BPD)、头围(HC)、股骨长度(FL)、腹围(AC)等]的测量准确地确定孕周;检查宫颈和胎盘位置;检查子宫及附件有无异常(排除子宫肌瘤和卵巢肿瘤)等。但主要目的还是胎儿?
The purpose of ultrasound screening in the second trimester Pregnancy ultrasound screening purposes include: detection of multiple births, to determine the number of chorion and amniotic membrane. Gestational weeks are accurately determined by measurements of fetal biological parameters [BPD, HC, femoral length (FL), abdominal circumference (AC), etc.]; examination of cervical and placental location; examination of uterus and appendages No abnormalities (excluding uterine fibroids and ovarian tumors) and so on. But the main purpose is fetus?