Anatomical reconstructions of pediatric airways from endoscopic images: A pilot study of the accuracy of quantitative endoscopy

Meisner, Eric; Hager, Gregory D.; Ishman, Stacey L.; Brown, David J.; Tunkel, David E.; Ishii, Masaru

doi:10.1002/lary.24046

Cited by 7 publications

(7 citation statements)

References 16 publications

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“…Over the past several years, other investigators have developed endoscopic measurement techniques for the airway. [4][5][6][7][8][9] These methods have mostly used specialized/modified instruments or software that are not commonly used in direct laryngoscopy and bronchoscopy. While each method has merits, we believe that the flexibility and simplicity of our technique will allow for any interested investigator or physician to utilize our method.…”

Section: Discussionmentioning

confidence: 99%

“…3 Numerous studies have looked at developing other techniques for assessing the size of the airway, but most of these methods-while accuratehave required the use of equipment that is not normally a part of a clinical direct laryngoscopy and bronchoscopy. [4][5][6][7][8][9][10][11] With commonly used endoscopic instruments and opensource image analysis software, we hypothesize that measuring an area of interest endoscopically can be easily and accurately performed among different surgeons independently in the pediatric airway. The objective of this paper is to demonstrate the accuracy and reliability of a simple endoscopic technique for measuring the CSA of the proximal airway.…”

Section: Introductionmentioning

confidence: 99%

“…3 Numerous studies have looked at developing other techniques for assessing the size of the airway, but most of these methods—while accurate—have required the use of equipment that is not normally a part of a clinical direct laryngoscopy and bronchoscopy. 4-11…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Simple Endoscopic Technique for Measuring the Cross-Sectional Area of the Upper Airway in a Rabbit Model

Wistermayer

McIlwain

Ieronimakis

et al. 2018

Ann Otol Rhinol Laryngol

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Simple Endoscopic Technique for Measuring the Cross-Sectional Area of the Upper Airway in a Rabbit Model

Wistermayer

McIlwain

Ieronimakis

et al. 2018

Ann Otol Rhinol Laryngol

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“…Existing endoscopic based human organ 3D reconstructions require either the multi-view image sequences [45], [46] or the precise prior knowledge of camera movement path and organ shape [14], [15], [47]. Pilot researches on laryngoscope [48] show that it is possible to reconstruct the 3D representation of human airway with images manually taken from multiple views. Similar researches on cystoscopy [49] also illustrate that geometric constraints on the organ shape can benefit the reconstruction of human bladder.…”

Section: B Reconstruction Of the Small Intestinementioning

confidence: 99%

A Novel Cyber Physical System for 3-D Imaging of the Small Intestine <italic>In Vivo</italic>

et al. 2015

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Small intestine is the longest organ in the gastrointestinal tract where much of the digestion and the food absorption take place. Wireless video capsule endoscope (VCE) is the first device taking 2-D pictures from the lesions and the abnormalities in the entire length of the small intestine. Since precise localization and mapping inside the small intestine is a very challenging problem, we cannot measure the distance traveled by the VCE to associate lesions and abnormalities to locations inside the small intestine, and we cannot use the 2-D pictures to reconstruct the 3-D image of interior of the entire small intestine in vivo. This paper presents the architectural concept of a novel cyber physical system (CPS), which can utilize the 2-D pictures of the small intestine taken by the VCE to reconstruct the 3-D image of the small intestine in vivo. Hybrid localization and mapping techniques with millimetric accuracy for inside the small intestine is presented as an enabling technology to facilitate the reconstruction of 3-D images from the 2-D pictures. The proposed CPS architecture provides for large-scale virtual experimentations inside the human body without intruding the body with a sizable equipment using reasonable clinical experiments for validation. The 3-D imaging of the small intestine in vivo allows a lesion to be pinpointed for follow-up diagnosis and/or treatment and the abnormalities may be observed from different angles in 3-D images for more thorough examination.

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“…These techniques have not been widely adopted, presumably as a result of the need for new surgical instruments or other equipment. Some described methods utilize the video imaging data obtained through bronchoscopy to reconstruct computer-generated models of the airway, which then allows for endoluminal dimensional analysis [6,7,8]. While these techniques have each shown promising results, they have not become widely adopted given the requirement of novel computer software, specialized equipment, and expert training to execute data analysis.…”

Section: Introductionmentioning

confidence: 99%

Clinical validation and reproducibility of endoscopic airway measurement in pediatric aerodigestive evaluation

Francom

Best

Eaton

et al. 2019

International Journal of Pediatric Otorhinolaryngology

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Background: Endoscopic airway measurement (EAM) combines optical endoscopic instruments with open source image processing to accurately obtain airway dimensions. Preclinical models have demonstrated EAM as an accurate technique of airway measurement with the added advantage of characterizing multilevel stenosis, non-circular lesions, and distal obstruction. The aim of this prospective clinical study was to compare EAM to airway measurements obtained from endotracheal tube approximation (ETTA) during pediatric aerodigestive evaluation and to evaluate reproducibility of EAM across practitioners. Methods: Thirty-seven pediatric patients undergoing routine microlaryngoscopy and bronchoscopy at a single tertiary care children’s hospital were prospectively recruited. Patients undergoing emergent procedures were excluded. Two blinded reviewers performed airway measurements using ImageJ (NIH) as previously described and average values were compared to ETTA measurements. Additional EAMs were obtained from an ex vivo airway model by 28 separate clinicians and were analyzed by the same reviewers to evaluate reproducibility. Results: EAM and ETTA measurements were themselves significantly different (p = 0.0003); however, the average absolute difference between the two methods was small (Mean: 0.5 mm, 95%CI: −2.6 to 1.6 mm). There were notable differences between raters such that estimates of raters with more experience were more similar to ETTA. Despite observed differences between EAM and ETTA, endoscopic airway measurement was highly correlated with ETTA (p = 0.0002, Spearman r = 0.4185), and strong agreement was observed (Bias: −0.4974 ± 1.083 mm, 95% LOA: −2.62 to 1.625 mm). Conclusion: Clinical use of EAM is a valid and precise approach for quantification of airway luminal dimensions. This method may provide advantages over traditional ETTAs for evaluation of asymmetric airway morphology in the pediatric population.

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Anatomical reconstructions of pediatric airways from endoscopic images: A pilot study of the accuracy of quantitative endoscopy

Cited by 7 publications

References 16 publications

A Simple Endoscopic Technique for Measuring the Cross-Sectional Area of the Upper Airway in a Rabbit Model

A Simple Endoscopic Technique for Measuring the Cross-Sectional Area of the Upper Airway in a Rabbit Model

A Novel Cyber Physical System for 3-D Imaging of the Small Intestine <italic>In Vivo</italic>

Clinical validation and reproducibility of endoscopic airway measurement in pediatric aerodigestive evaluation

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