Yusa T, Iyoda A
Department of Respiratory Surgery, Chiba Rosai Hospital, Japan.
Nihon Kokyuki Gakkai Zasshi. 1998 Aug;36(8):722-5.
The patient was a 20-year-old woman with spontaneous pneumothorax, who had had pneumothorax twice on each side. Three-dimensional computed topographic (CT) images were made as follows. The range 12.5 cm caudad from the pulmonary apex was scanned by rapid helical CT, and three-dimensional images were obtained with the surface-rendering technique at a voxel extraction threshold ranging-850 HU to 1,600 HU. The three-dimensional CT images provided a stereotactic rendering of the lung surface. Irregular findings were observed at both pulmonary apices; they indicated the presence of one emphysematous bulla in the right lung and many emphysematous bullae of various sizes in the left lung. These findings were highly consistent with the sites and structures of the emphysematous bullae, as observed during thoracoscopy, which suggests that three-dimensional CT is a useful method for diagnosing and evaluating emphysematous bullae in patients with spontaneous pneumothorax.
该患者为一名20岁的自发性气胸女性，双侧均曾发生过两次气胸。三维计算机断层扫描（CT）图像如下所示。通过快速螺旋CT扫描肺尖下方12.5 cm的范围，并采用表面渲染技术在体素提取阈值-850 HU至1600 HU范围内获得三维图像。三维CT图像提供了肺表面的立体渲染图。在双侧肺尖均观察到不规则表现；提示右肺存在一个肺大疱，左肺有许多大小各异的肺大疱。这些表现与胸腔镜检查中观察到的肺大疱部位和结构高度一致，这表明三维CT是诊断和评估自发性气胸患者肺大疱的一种有用方法。
