sono·gram /ˈsɑnəˌgræm/
  聲圖; 聲波圖; 語圖
  sono·gram /ˈsɑnəˌgræm/ 名詞
  sonogram
       n : an image of a structure that is produced by ultrasonography
           (reflections of high-frequency sound waves); used to
           observe fetal growth or to study bodily organs