一項對妊娠小鼠的研究顯示，妊娠小鼠暴露于超聲超過30分鐘能夠對胎鼠大腦發育產生負面影響。

耶魯大學醫學院(New Haven, CT, USA)的科研人員發現，叫做神經元的特殊神經細胞并沒有出現在發育大腦的合適區域。研究人員在2006年8月7日美國科學院進展上報道了這些研究結果。
 
Ultrasound May Affect Fetal Brain Development
 
Studies on pregnant mice revealed that exposing the pregnant mice to ultrasound for over 30 minutes can adversely affect fetal brain development.

Scientists from Yale University School of Medicine (New Haven, CT, USA) discovered that specific nerve cells called neurons did not find their way to their appropriate areas of the developing brain. The researchers revealed their findings in the August 7, 2006, issue of the journal Proceedings of the [U.S.] National Academy of Sciences.