Alvord L S, Fine P G
Department of Communication Disorders, University of Utah, Salt Lake City, 84112.
J Ultrasound Med. 1990 Feb;9(2):91-4. doi: 10.7863/jum.1990.9.2.91.
Middle ear visualization is difficult otoscopically due to the usual opacity of the eardrum. Though various procedures have been developed, difficulties exist in determining effusion and other middle ear anomalies. Past studies have demonstrated the effectiveness of A-scan ultrasound for such purposes. The present study reports initial results of real-time B-scan sonography on patients with normal and effusion-filled middle ears. Consistent landmarks are seen in the normals. Fluid appears in the abnormals as a band or elliptical area of nonreflectance medial to the eardrum. Though further study is necessary to determine reliability, initial results are promising for this application.
由于鼓膜通常不透明，通过耳镜很难看清中耳情况。尽管已经开发了各种方法，但在确定中耳积液和其他异常情况时仍存在困难。过去的研究已经证明A超在这类检查中的有效性。本研究报告了实时B超对中耳正常和有积液患者的初步检查结果。在中耳正常的患者中可以看到一致的标志性结构。在中耳异常的患者中，液体表现为鼓膜内侧的一条带状或椭圆形无回声区。尽管还需要进一步研究以确定其可靠性，但初步结果显示该应用前景良好。
