Comparison of endoscopic versus 3D CT derived airway measurements.
Comparison of endoscopic versus 3D CT derived airway measurements.
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DOI：
10.1002/lary.23836
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发表时间：
2013-09
期刊：
影响因子：
2.6
通讯作者：
Zdanski, Carlton J.
中科院分区：
文献类型：
--
作者：
Calloway, Hollin E.;Kimbell, Julia S.;Davis, Stephanie D.;Retsch-Bogart, George Z.;Pitkin, Elizabeth A.;Abode, Kathleen;Superfine, Richard;Zdanski, Carlton J.
To understand: (1) how endoscopic airway measurements compare to three-dimensional (3D) CT derived measurements; (2) where each technique is potentially useful; and (3) where each has limitations. Compare airway diameters and cross-sectional areas from endoscopic images and CT derived 3D reconstructions. Videobronchoscopy was performed and recorded on an adult-sized commercially available airway mannequin. At various levels, cross sectional areas were measured from still video frames using a referent placed via the biopsy port. A 3D reconstruction was generated from a high resolution CT of the mannequin, planar sections were cut at similar cross-sectional levels and cross-sectional areas were obtained. At three levels of mechanically generated tracheal stricture, the differences between the endoscopic measurement and CT derived cross sectional area were 1%, 0%, and 7% (1.8, 0.8, and 14 mm2). At the vocal folds, the difference was 9% (7.8 mm2). The tip of the epiglottis and width of the epiglottis differed by 27% and 10% (18.73 mm2, 0.40mm). The airway measurements at the base of tongue, minimal cross sectional area of the pharynx, and choana differed by 26%, 36%, and 30% (101.40 mm2, 36.67 mm2, 122.71 mm2). Endoscopy is an effective tool for obtaining airway measurements compared with 3D reconstructions derived from CT. Concordance is best in geometrically simple areas where the entire cross-section measured is visible within one field of view (trachea, round; vocal folds, triangular) versus geometrically complex areas that encompass more than one field of view (i.e. pharynx, choana).
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