Author of

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  P3.17 - Poster Session 3 - Bronchoscopy, Endoscopy (ID 185)

  • Event: WCLC 2013
  • Type: Poster Session
  • Track:
  • Presentations: 1
  • Moderators:
  • Coordinates: 10/30/2013, 09:30 - 16:30, Exhibit Hall, Ground Level

  • 12761

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    P3.17-002 - Virtual Bronchoscopy and Virtual Bronchoscopic Lung Biopsy using OsiriX (ID 1247)

    09:30 - 09:30  |  Author(s): T. Tsuchiya
    • Abstract

    Background
    Although the utility of virtual bronchoscopy has been reported, the software for virtual bronchoscopy has not been popular due to the high cost. OsiriX® is a reasonably priced software that is available to reconstruct virtual endoscopic images. Herein, we present the ability of OsiriX to enable virtual bronchoscopy.

    Methods
    Computed tomography (CT) of the chest was performed using a 16-row multidetector. Data in 2 mm slices from one lung were obtained in 10 patients with a lung nodule. Virtual bronchoscopic images were established by OsiriX version 5.5 (32-bit). To examine the ability to visualize small bronchi, we tried to visualize the distal bronchus possible. We selected B[1a] and B[10c] for the right lung and B[1+2a] and B[10c] for the left lung. In addition, to predict whether a pathological diagnosis can successfully made via transbronchial lung biopsy, we reconstructed virtual bronchoscopic images toward the lung nodule.

    Results
    Bronchoscopic images were successfully reconstructed for all patients. It takes several seconds to convert CT images into bronchoscopic images. The third to the seventh bronchi were visualized, except in one patient whose right B[10] was occluded by a tumor. The smallest bronchial diameter visualized was approximately 1.5 mm. For all cases, the second-order bronchus, such as B[1] and B[10], were easily visualized. To visualize the third and higher-order bronchi, it was sometimes necessary to manually adjust brightness and contrast. The pathway can be recorded and retrieved using the “Fly Through” function. The pathway of the virtual bronchoscopy was reconstructed in only 5 to 10 minutes. In all cases, the path of the virtual bronchoscopy reached the lung nodule (Fig.1). Therefore we predict that bronchoscopic biopsy would have been successful in all cases. Based on transbronchial biopsy, 4 patients were diagnosed with lung carcinoma and 1 patient was suspected of having adenocarcinoma. In all cases, the lung nodules were successfully diagnosed.Figure 1

    Conclusion
    OsiriX is practicable for virtual bronchoscopy at a low cost.