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大量研究结果表明,在行B超获取必要的诊断信息时,诊断级超声以最小超声剂量,时间控制在10分钟内,探头不固定于某点,对胚胎及胎儿是安全的。B超特别是彩色多普勒辐照时间超过30分钟,或探头持续固定于某点,可引起胚胎及胎儿的损害因而,早孕不应将B超作为常规检查,只在有一定指征时才进行超声波检查。超声波作为产科领域的一种辅助检查手段,能较准确获悉,胚胎及胎儿的发育情况,在早孕时可了解孕裳、胚胎组织发育及
A large number of studies have shown that in the diagnosis of ultrasound B line to obtain the necessary information, the minimum diagnostic ultrasound ultrasound dose, time control within 10 minutes, the probe is not fixed at a certain point, the embryo and fetus is safe. B ultrasound, especially color Doppler irradiation time of more than 30 minutes, or the probe continued to be fixed at a certain point, can cause embryonic and fetal damage Therefore, early pregnancy should not be as a routine examination B ultrasound, only when there are certain indications Ultrasound examination. Ultrasound as an auxiliary examination in the field of obstetrics can be more accurate understanding of the embryonic and fetal development, understanding of pregnancy in early pregnancy, embryonic tissue development and