The localization of brain tumors by ultrasonic techniques. A clinical review of 111 cases.
The localization of brain tumors by ultrasonic techniques. A clinical review of 111 cases.
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通过超声波技术定位脑肿瘤。
DOI：
10.3171/jns.1965.23.2.0135
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发表时间：
1965
影响因子：
4.1
通讯作者：
T. Wagai
中科院分区：
文献类型：
--
作者：
K. Tanaka;K. Ito;T. Wagai
脑肿瘤的T ~E病理和症状学现在已经很清楚了。诊断有时借助于空气检查、脑电图和脑电图。超声检查是一种简单的诊断技术，在不建议进行超声造影术或空气检查的晚期脑肿瘤中有部分价值。自1950年以来，在神经外科领域应用超声作为诊断目的的报道已有0.1-7,9- 2 Dussik， 6和Huer， e和Bol t la试图通过一种称为高声像图的超声传输方法获得心室图像。然而，脑室的图像不像气脑图那样清晰。近年来，超声（回波）反射法已被广泛应用。自1995年以来，我们一直在使用超声反射法诊断脑肿瘤。本文总结了我们的研究结果。发射的脉冲可以被测量。通过对这些超声回波的分析，可以做出正确的诊断。以确定反射的准确性。超声波的作用以及脑肿瘤组织与正常脑组织的声阻抗差异，我们用新鲜脑组织进行了以下实验。用于测量新鲜组织中声速的仪器如图1所示。*测量时，首先将仪器夹在样品上，然后浸入除气水中。利用显微镜对薄膜进行观察，比较了各介质中反射面到激光脉冲发射起始点的距离。样品的密度是用硫酸铜溶液测定的。实验结果见表1。我们可以看到，脑肿瘤组织的声阻抗大于正常脑组织的声阻抗。因此，从理论上讲，脑组织和肿瘤组织之间的边界可能会引起反射。
T ~E pathology and symptomology of brain tumors are now well understood. Diagnosis is sometimes assisted by air studies, a r te r iographyand electroencephalography. Ultrasonic examinat ion is a simple diagnostic technique, and has part icular value in the advanced stages of brain tumor when ar ter iography or air studies are inadvisable. The application of u l t rasound for the purpose of diagnosis in the neurosurgical field has been repor ted since 1950.1-7,9-a2 Dussik, 6 and Huer t e r and Bol t la have tried to obtain a picture of the ventricles by a transmission method of u l t rasound called hyperphonography. However , the picture of the ventricles was not as clear as a pneumoencephalogram. Recent ly the reflection method of ul trasound (echo) has been chiefly employed. Since 195~, we have been utilizing the reflection method of u l t rasound in the diagnosis of brain tumors . This pape r summarizes our results. the t ransmi t ted pulse can be measured. By analysis of these ultrasonic echoes, correct diagnosis can be made. To establish the accuracy of the refle.ction of the ultrasonic wave and the difference in acoustic impedance between brain t umor tissue and normal brain tissue, we conducted the following experiments with fresh tissue. The appara tus used to measure veloci ty of sound in fresh tissue is shown in Fig. 1.* To make measurements the device was first clamped on the sample, than immersed in degassed water. Using a microscope on the films, the distance of the reflecting surface from the s tar t ing point of the t r ansmi t t ed pulse in each of the mater ia ls was compared. The density of the sample was measured b y a solution of copper sulphate. The results of these experiments are shown in Tab le 1. I t will be seen tha t the acoustic impedance of brain t umor tissue is greater t han t h a t of normal brain tissue. Thus it is theoret ical ly possible tha t the border between brain tissue and tumor tissue will cause a reflection.