Grab D, Sterzik K, Terinde R
Universitäts-Frauenklinik Ulm.
Geburtshilfe Frauenheilkd. 1992 Dec;52(12):721-9. doi: 10.1055/s-2007-1023801.
Ultrasound examinations in pregnancy were carried out worldwide for over 30 years with no proof of adverse effects on either, mother or child. However, to evaluate the clinical significance of the numerous studies dealing with questions of safety of obstetrical sonography, a basic knowledge of its physical and technical aspects is needed. The present paper aims to convey these basics and should provide a review of the major publications concerned with the clinical safety of the method. Below clearly defined intensity levels, ultrasound scanning in pregnancy can still be considered unhazardous for both mother and child. However, it must be borne in mind, that the safety margin of Doppler flow measurements is lower for duplex compared with B-mode equipment. Therefore, for the present, duplex sonography should not be routinely applied in the first trimester of pregnancy.
全球范围内进行孕期超声检查已有30多年，尚无证据表明其对母亲或胎儿有不良影响。然而，为了评估众多关于产科超声安全性问题研究的临床意义，需要了解其物理和技术方面的基本知识。本文旨在阐述这些基础知识，并对有关该方法临床安全性的主要出版物进行综述。在明确界定的强度水平以下，孕期超声扫描对母亲和胎儿仍可被视为无害。然而，必须牢记，与B型设备相比，双功超声的多普勒血流测量安全系数较低。因此，目前双功超声不应在妊娠早期常规应用。
