ultrasound

名词 ultrasound:

1. very high frequency sound; used in ultrasonography
2. 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
   同义词：sonography, ultrasonography, echography

1. Diagnostic imaging in which ultrasound is used to visualize an internal body structure or a developing fetus.
   超声波扫描术利用超声波来显示耳体结构或胚胎发育情况的诊断用的成像法