少量胸腔积液和包裹性胸膜积液,无论从体征检查和X线的診断均有一定的困难,但超声波对有无胸水的診断提供了重要材料。茲将本院临床穿刺失敗、而借助于超声波作出診断的六例病案介紹于下: 一、机器和方法:江南Ⅰ型B超声探伤仪。頻率:2.5兆赫。換能器为偏钛酸钡晶体。探头直径:12毫米。 A small amount of pleural effusion and pleural effusion encapsulation, both from the examination and X-ray diagnosis have some difficulties, but ultrasound diagnosis of pleural effusion with or without providing an important material. Will this hospital failed to clinical puncture, but with the help of ultrasound diagnosis of six cases introduced in the next: First, the machine and method: Jiangnan Ⅰ B ultrasonic flaw detector. Frequency: 2.5 MHz. Transducer barium titanate crystals. Probe diameter: 12 mm.