母亲妊娠期如果接受大量放射线照射,将会对胎儿的智力发育造成不良影响。根据日本学者的报道,在长崎、川岛遭原子弹轰炸后幸存的孕妇中,所生的小儿不少有严重的智力缺陷,智力低下的发病率与当时妊娠月数及距爆炸中心的距离有关。有人曾报道,一母亲在妊娠时为了终止妊娠,曾故意暴露在X线下,结果生下一个智力低下 If the mother receives a large amount of radiation during pregnancy, it will adversely affect her mental development. According to Japanese scholars, many infants born in Nagasaki and Kawashima survived the atomic bombing have serious mental retardation. The incidence of mental retardation is related to the number of months of gestation and the distance from the center of explosion . It has been reported that a mother who intentionally exposed to the X-ray during pregnancy to terminate her pregnancy gave birth to a mental retardation