超声波心动描记器一种用来显示详细的大脑图象的仪器，利用超声波发送和反射的差异来测试并无伤无痛 An instrument that in a painless and noninvasive manner uses the differential transmission and reflection of ultrasonic waves to create a detailed visual image of the brain.
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 Diagnostic imaging in which ultrasound is used to visualize an internal body structure or a developing fetus.
医生给他做了脑部超声波扫描检查。 The doctors gave him an ultrasonic brain scan.
