so·nog·ra·phy /soˈnɑgrəfi/
  so·nog·ra·phy /soˈnɑgrəfɪ/ 名詞
  聲像圖檢查,超聲檢查
  sonography
       n : using the reflections of high-frequency sound waves to
           construct an image of a body organ (a sonogram); commonly
           used to observe fetal growth or study bodily organs [syn:
            ultrasonography, ultrasound]