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Integrated multipoint-laser endoscopic airway measurements by transoral approach

Objectives: Optical and technical characteristics usually do not allow objective endoscopic distance measurements. So far no standardized method for endoscopic distance measurement is available. The aim of this study was to evaluate the feasibility and accuracy of transoral airway measurements with a multipoint-laser endoscope. Methods: The semirigid endoscope includes a multipoint laser measurement system that projects 49 laser points (wavelength 639 nm, power < 5mW) into the optical axis of the endoscopic view. Distances, areas, and depths can be measured in real-time. Transoral endoscopic airway measurements were performed on nine human cadavers, which were correlated with CT measurements. Results: The preliminary experiment showed an optimum distance between the endoscope tip and the object of 5 to 6 cm. There was a mean measurement error of 3.26% ±
2.53%. A Spearman correlation coefficient of 0.95 (

Identiferoai:union.ndltd.org:DRESDEN/oai:qucosa.de:bsz:15-qucosa-204675
Date14 June 2016
CreatorsNeitsch, Marie, Horn, Iris-Susanne, Hofer, Mathias, Dietz, Andreas, Fischer, Miloš
ContributorsUniversität Leipzig, Medizinische Fakultät, Hindawi Publ.,
PublisherUniversitätsbibliothek Leipzig
Source SetsHochschulschriftenserver (HSSS) der SLUB Dresden
LanguageEnglish
Detected LanguageEnglish
Typedoc-type:article
Formatapplication/pdf
SourceBioMed Research International 2016 doi:10.1155/2016/6838697

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