Ono R, Suemasu K, Matsunaka T
Department of Endoscopy, National Cancer Center Hospital, Tokyo.
Jpn J Clin Oncol. 1993 Feb;23(1):34-40.
An ultrasonic bronchoscope has been newly developed for diagnosis and lymph node staging in the hilum and mediastium. The instrument comprises an Echo-camera, SSD-630 (Aloka), and a transbronchial ultrasonic probe similar to the currently used videobronchoscope. The scope is equipped with an ultrasonic transducer in its tip. The maximum diameter of the probe head is 6.3 mm and that of the transducer, 5.0 mm. The frequency employed is 7.5 Megahertz (MHz) and the direction of scanning is parallel to the bronchoscopic axis. The device can easily be introduced into the lobar bronchus under topical anesthesia in a similar procedure to that used for routine videobronchoscopy. The location of the transducer in the airway is confirmed by monitoring endoscopic images on a TV monitor screen. With the device, 25 patients, who had given their consent for the ultrasonographic study beforehand, were examined during the two-month period, January and February, 1992. Vessels such as the thoracic aorta, pulmonary artery and truncus brachiocephalicus were good landmarks for diagnosis. Lung cancer was detected in five patients by biopsy, three malignant lesions in the hilum were diagnosed by videobronchoscopy while two malignant lesions in the periphery were confirmed by bronchoscopic ultrasonography as anterior mediastinal lymph node swellings.
一种新型超声支气管镜已被研发出来，用于肺门和纵隔疾病的诊断及淋巴结分期。该仪器包括一台Echo-camera、SSD-630（阿洛卡公司）以及一个类似于当前使用的视频支气管镜的经支气管超声探头。该支气管镜在其顶端配备了一个超声换能器。探头头部的最大直径为6.3毫米，换能器的最大直径为5.0毫米。使用的频率为7.5兆赫兹（MHz），扫描方向与支气管镜轴平行。在局部麻醉下，该设备可像常规视频支气管镜检查那样，轻松地插入叶支气管。通过在电视监视器屏幕上监测内镜图像来确定换能器在气道中的位置。在1992年1月和2月的两个月期间，使用该设备对25名事先同意接受超声检查的患者进行了检查。诸如胸主动脉、肺动脉和头臂干等血管是诊断的良好标志。通过活检在5名患者中检测到肺癌，通过视频支气管镜诊断出3例肺门恶性病变，而通过支气管镜超声检查确认2例周边恶性病变为前纵隔淋巴结肿大。
