Doi N
J UOEH. 1983 Mar 1;5(1):17-25. doi: 10.7888/juoeh.5.17.
Reports seeking the rate of successful echography of the fetal scrotum, penis and labia majora classified by individual weeks of gestation over the long period from the 22nd to the 41st week of gestation, are few. In the present study, the rates of successful echography of the scrotum, penis, labia majora, M-type and F-type of the fetal APG region in the breech and transverse presentations in each week of gestation for the period from the 22nd to the 41st week of gestation were pursued with a view to finding out the best suited time for the observation of each image. Ultrasonography was performed 3039 times in total on 620 pregnant women who delivered their babies, and the following results were obtained: The rates of successful echography classified by presentation decreased in the order of cephalic, breech and transverse presentations. The rates of successful echography with the first and second manipulations classified by individual weeks of gestation were also determined, and the optimal periods for observation were sought. The rates of correct echography as a whole were also determined, with the following results: Breech presentation is 74.1% in male fetuses and 68.3% in female fetuses; Transverse presentation is 66.2% in male fetuses and 58.6% in female fetuses, respectively.
关于在妊娠22周-41周这一较长时间段内，按妊娠周数分别统计胎儿阴囊、阴茎及大阴唇超声检查成功率的报告较少。在本研究中，为找出观察各部位图像的最佳时机，对妊娠22周-41周各孕周臀位及横位胎儿的阴囊、阴茎、大阴唇、胎儿APG区的M型和F型超声检查成功率进行了研究。对620例分娩孕妇共进行了3039次超声检查，结果如下：超声检查成功率按胎位依次为头位、臀位、横位递减。还确定了按孕周分类的首次和第二次操作时超声检查的成功率，并探寻了最佳观察期。整体超声检查的正确率也已确定，结果如下：臀位时，男胎为74.1%，女胎为68.3%；横位时，男胎为66.2%，女胎为58.6%。
