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Real-time Bronchoscope Tip Localization Enables Three-dimensional CT Image Guidance for Transbronchial Needle Aspiration in Swine FREE TO VIEW

Stephen B. Solomon; Peter White, Jr.; David E. Acker; John Strandberg; Anthony C. Venbrux
Author and Funding Information

From the Departments of Radiology, Medicine, and Pathology, School of Medicine, The Johns Hopkins Medical Institutions, Baltimore, MD.

Stephen Solomon, MD, Blalock 545, The Johns Hopkins Hospital, 600 North Wolfe St., Baltimore, MD 21287; e-mail: ssolomo@welchlink.welch.jhu.edu

1998 by the American College of Chest Physicians

Chest. 1998;114(5):1405-1410. doi:10.1378/chest.114.5.1405
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Study objective: To determine the feasibility of using real-time bronchoscope position technology coupled with previously acquired three-dimensional CT data to enhance transbronchial needle aspiration (TBNA).

Design: Eight swine were given percutaneously created target lesions for TBNA. A miniature position sensor was placed at the tip of a bronchoscope, and real-time position information during bronchoscopy was presented on a monitor simultaneously displaying previously acquired three-dimensional CT data.

Interventions: TBNA of target lesions and submucosal ink-spot injection of computer-generated targets.

Measurements and results: TBNA specimens revealed successful aspiration of target material. Distances between ink marks made at computer-generated tracheal targets varied, on average (±SD), 4.2 mm ± 2.6 mm from predetermined computer-distance coordinates.

Conclusion: Real-time bronchoscope position technology coupled with previously acquired CT images may aid with TBNA of nonvisible extrabronchial lesions.




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