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(一)概况脑回声图仪是一种利用超声在介质中传播的特性(指向性、声速反射特性等)来测量人颅脑中线结构的位置,观察中线结构有没有移位的诊断器械。在正常的情况下,移位不超过3～5mm,如果大于此值,则可考虑是否有屏幕占位性病变位于增大的一侧。这种诊断方法始于40年代中期,由于此法对病人无损伤、无痛苦、快速、经济,有较高的可靠性,可重复检查,使用方便等的特点,一直为神经内外科医生广泛使用着。国外同类产品较多,较发达的工业国家都有生产,广告做得最大的是日本 Aloka 公司,文献中常见使用的是西德Kraut Kr(?)mer 产品。
(A) Overview Echocardiograph is a use of ultrasonic propagation in the media properties (directivity, sound velocity reflection characteristics, etc.) to measure the position of the human brain structure of the midline to observe the midline structure has no shift in the diagnostic equipment. Under normal circumstances, the shift does not exceed 3 ~ 5mm, if greater than this value, you can consider whether there is a screen-occupying lesion on the increased side. This method of diagnosis began in the mid-1940s and has been widely used by neurosurgeons as it is non-invasive, painless, fast, economical, highly reliable, repeatable and easy to use With More similar foreign products, more developed industrial countries have production, advertising is the largest Japanese company Aloka company, the document is commonly used in West Germany Kraut Kr (?) Mer products.