顶骨宽,二顶骨的,二顶的
The cephalic index is the ratio of the occipitofrontal distance to the biparietal diameter. 头指数是枕额径/双顶径的比率。
CCD and TCD of Normal fetuses were correlated well with the biparietal diameter (BPD). 正常妊娠时CCD、TCD与BPD明显相关。
In dolichocephaly the head circumference remains normal and the biparietal diameter appears abnormally small. 长头时，头围仍正常，而双顶径明显变小。
Normally, if the head is at 0 Station, the biparietal diameter is at the pelvic inlet and the head is fully engaged. 通常，如果胎头处于零点位置，双顶径与骨盆口契合，那么胎头可以充分进入。
But only COC fetuses demonstrated low brain weight and low striatum weight on E17, as well as small biparietal diameter (BPD) on postnatal dl (P1). COC组仔鼠生后第 1天(P1)双顶径(BPD)也小于其它两组仔鼠.
Results:Biparietal diameter the chance of asphyxia and getting hurt during cesarean section were less than those in vaginal delivery. 结果巨大胎儿中剖宫产组较阴道分娩组新生儿窒息率及产伤机会均明显降低,巨大胎儿与正常体重儿相比难产率明显升高。
