Department of Cardiology, Respiratory Medicine and Nephrology, Hirosaki University Graduate School of Medicine, Hirosaki 036-8562, Japan.
Br J Anaesth. 2012 Mar;108(3):512-6. doi: 10.1093/bja/aer420. Epub 2011 Dec 26.
We have developed a new bronchoscopy system with two independent lenses at the tip of the device. This enables measurement of object size using the principle of triangulation. This study was performed to assess the accuracy of this system.
The accuracy of the bronchoscopy system was confirmed by measuring the diameters of four plastic tubes and 36 airway calibres in 12 surgical patients under general anaesthesia. The measured diameters of the tubes and airway tracts were compared with the manufactured diameters of tubes and those measured by high-resolution computed tomography (HRCT)-based virtual bronchoscopy, respectively.
Using the new bronchoscope system, tube diameters, 9, 12, 15, and 19 mm, were measured as 9.9 (0.7), 12.8 (1.4), 16.3 (1.6), and 20.1 (2.0) mm, respectively. Airway calibres obtained by a stereovision bronchoscopy and HRCT-based virtual bronchoscopy were 8.66 (4.31) and 9.38 (5.09) mm, respectively. There is a significant correlation between airway calibres with the two measurement methods (r=0.975, P<0.01).
We have confirmed that this new bronchoscopy system could provide relatively accurate quantitative data. This new system may be useful in the clinic to measure airway dimension and lesion sizes such as tumours.
我们开发了一种新的支气管镜系统，该系统在器械尖端有两个独立的镜头。这使得可以使用三角测量原理来测量物体的大小。本研究旨在评估该系统的准确性。
在 12 名全身麻醉下的手术患者中，通过测量四个塑料管和 36 个气道口径的直径，确认支气管镜系统的准确性。测量的管和气道的直径分别与管的制造直径和基于高分辨率计算机断层扫描（HRCT）的虚拟支气管镜测量的直径进行比较。
使用新的支气管镜系统，分别测量了 9、12、15 和 19mm 的管直径，结果为 9.9（0.7）、12.8（1.4）、16.3（1.6）和 20.1（2.0）mm。立体视觉支气管镜和基于 HRCT 的虚拟支气管镜获得的气道口径分别为 8.66（4.31）和 9.38（5.09）mm。两种测量方法之间的气道口径具有显著相关性（r=0.975，P<0.01）。
我们已经证实，这种新的支气管镜系统可以提供相对准确的定量数据。该新系统在临床上可能有助于测量气道尺寸和病变大小，如肿瘤。
