Quantitative Morphometric Measurements of the Oropharynx in Obstructive Sleep Apnea Syndrome Using a Laser Depth Measurement Module

Chung-Feng Jeffrey Kuo,1 Chun-Shu Lin,2 Cheng-Hsien Chuang,1 Chung-Shen Lin,3 Feng-Shiang Chiu,3 Shao-Cheng Liu3 1Department of Material Science & Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan, Republic of China; 2Department of Radiation Oncology, Tri-Serv...

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Autores principales:	Kuo CFJ, Lin CS, Chuang CH, Chiu FS, Liu SC
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2020
Materias:	obstructive sleep apnea syndrome quantitative endoscope computer-aided diagnostic system retropalatal depth cross-sectional area oropharyngeal inlet Psychiatry RC435-571 Neurophysiology and neuropsychology QP351-495
Acceso en línea:	https://doaj.org/article/b1f9dbb11e37487a8a3fc1aa65e033aa
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spelling	oai:doaj.org-article:b1f9dbb11e37487a8a3fc1aa65e033aa2021-12-02T13:31:43ZQuantitative Morphometric Measurements of the Oropharynx in Obstructive Sleep Apnea Syndrome Using a Laser Depth Measurement Module1179-1608https://doaj.org/article/b1f9dbb11e37487a8a3fc1aa65e033aa2020-12-01T00:00:00Zhttps://www.dovepress.com/quantitative-morphometric-measurements-of-the-oropharynx-in-obstructiv-peer-reviewed-article-NSShttps://doaj.org/toc/1179-1608Chung-Feng Jeffrey Kuo,1 Chun-Shu Lin,2 Cheng-Hsien Chuang,1 Chung-Shen Lin,3 Feng-Shiang Chiu,3 Shao-Cheng Liu3 1Department of Material Science & Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan, Republic of China; 2Department of Radiation Oncology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, Republic of China; 3Department of Otolaryngology-Head and Neck Surgery Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, Republic of ChinaCorrespondence: Shao-Cheng LiuDepartment of Otolaryngology-Head and Neck Surgery, Tri-Service General Hospital, National Defense Medical Center, No. 325, Sec. 2, Cheng-Gong Road, Neihu District, Taipei, Taiwan 114, Republic of ChinaTel +886-2-8792-7192Fax +886-2-8792-7193Email m871435@ndmctsgh.edu.twIntroduction: Current diagnostic routines in obstructive sleep apnea syndrome (OSAS), including drug-induced sleep endoscopy (DISE), provide qualitative data. Quantitative morphometric measurements of oropharyngeal structures remain challenging. This study aims to introduce a special linear laser projection device that can facilitate computer-assisted digitalized analysis and provide important quantitative information for OSAS prediction.Materials and Methods: We used a single-wavelength green three-linear laser to provide the scaling reference, with one at an angle of 8.5 degrees with the other two which were parallel. The oropharyngeal images were divided into two groups: the non-OSAS and OSAS group, after polysomnography. A minimum of three evaluations were carried out to determine the maximum cross-sectional area of the oropharyngeal inlet (CSAOI) and the retropalatal depth.Results: A total of 132 subjects were enrolled in this study, with 76 subjects in the non-OSAS group and 56 cases in the OSAS group. In the non-OSAS group, the CSAOI was significantly larger in males than in females. There was a trend toward deeper retropalatal region in men than in women (14.25 vs 11.76 mm). Correlation analysis revealed that retropalatal depth is significantly related to body height and the CSAOI. The body weight and BMI of patients with OSAS were significantly higher than those of participants without OSAS. The retropalatal depth and CSAOI were significantly decreased in OSAS patients as compared to those without OSAS. Our new parameter, the oropharyngeal index, showed the most outstanding discrimination by ROC analysis to predict OSAS.Conclusion: Our innovative module can provide reference parameters, which make it possible to directly estimate the objective absolute values of relevant oropharyngeal structures. Our non-invasive approach can be used for outpatient screening, since it allows the identification of potential OSAS patients who should be referred for polysomnography, as many patients do not require DISE early in their evaluation.Keywords: obstructive sleep apnea syndrome, quantitative endoscope, computer-aided diagnostic system, retropalatal depth, cross-sectional area, oropharyngeal inletKuo CFJLin CSChuang CHLin CSChiu FSLiu SCDove Medical Pressarticleobstructive sleep apnea syndromequantitative endoscopecomputer-aided diagnostic systemretropalatal depthcross-sectional areaoropharyngeal inletPsychiatryRC435-571Neurophysiology and neuropsychologyQP351-495ENNature and Science of Sleep, Vol Volume 12, Pp 1181-1190 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	obstructive sleep apnea syndrome quantitative endoscope computer-aided diagnostic system retropalatal depth cross-sectional area oropharyngeal inlet Psychiatry RC435-571 Neurophysiology and neuropsychology QP351-495
spellingShingle	obstructive sleep apnea syndrome quantitative endoscope computer-aided diagnostic system retropalatal depth cross-sectional area oropharyngeal inlet Psychiatry RC435-571 Neurophysiology and neuropsychology QP351-495 Kuo CFJ Lin CS Chuang CH Lin CS Chiu FS Liu SC Quantitative Morphometric Measurements of the Oropharynx in Obstructive Sleep Apnea Syndrome Using a Laser Depth Measurement Module
description	Chung-Feng Jeffrey Kuo,1 Chun-Shu Lin,2 Cheng-Hsien Chuang,1 Chung-Shen Lin,3 Feng-Shiang Chiu,3 Shao-Cheng Liu3 1Department of Material Science & Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan, Republic of China; 2Department of Radiation Oncology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, Republic of China; 3Department of Otolaryngology-Head and Neck Surgery Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, Republic of ChinaCorrespondence: Shao-Cheng LiuDepartment of Otolaryngology-Head and Neck Surgery, Tri-Service General Hospital, National Defense Medical Center, No. 325, Sec. 2, Cheng-Gong Road, Neihu District, Taipei, Taiwan 114, Republic of ChinaTel +886-2-8792-7192Fax +886-2-8792-7193Email m871435@ndmctsgh.edu.twIntroduction: Current diagnostic routines in obstructive sleep apnea syndrome (OSAS), including drug-induced sleep endoscopy (DISE), provide qualitative data. Quantitative morphometric measurements of oropharyngeal structures remain challenging. This study aims to introduce a special linear laser projection device that can facilitate computer-assisted digitalized analysis and provide important quantitative information for OSAS prediction.Materials and Methods: We used a single-wavelength green three-linear laser to provide the scaling reference, with one at an angle of 8.5 degrees with the other two which were parallel. The oropharyngeal images were divided into two groups: the non-OSAS and OSAS group, after polysomnography. A minimum of three evaluations were carried out to determine the maximum cross-sectional area of the oropharyngeal inlet (CSAOI) and the retropalatal depth.Results: A total of 132 subjects were enrolled in this study, with 76 subjects in the non-OSAS group and 56 cases in the OSAS group. In the non-OSAS group, the CSAOI was significantly larger in males than in females. There was a trend toward deeper retropalatal region in men than in women (14.25 vs 11.76 mm). Correlation analysis revealed that retropalatal depth is significantly related to body height and the CSAOI. The body weight and BMI of patients with OSAS were significantly higher than those of participants without OSAS. The retropalatal depth and CSAOI were significantly decreased in OSAS patients as compared to those without OSAS. Our new parameter, the oropharyngeal index, showed the most outstanding discrimination by ROC analysis to predict OSAS.Conclusion: Our innovative module can provide reference parameters, which make it possible to directly estimate the objective absolute values of relevant oropharyngeal structures. Our non-invasive approach can be used for outpatient screening, since it allows the identification of potential OSAS patients who should be referred for polysomnography, as many patients do not require DISE early in their evaluation.Keywords: obstructive sleep apnea syndrome, quantitative endoscope, computer-aided diagnostic system, retropalatal depth, cross-sectional area, oropharyngeal inlet
format	article
author	Kuo CFJ Lin CS Chuang CH Lin CS Chiu FS Liu SC
author_facet	Kuo CFJ Lin CS Chuang CH Lin CS Chiu FS Liu SC
author_sort	Kuo CFJ
title	Quantitative Morphometric Measurements of the Oropharynx in Obstructive Sleep Apnea Syndrome Using a Laser Depth Measurement Module
title_short	Quantitative Morphometric Measurements of the Oropharynx in Obstructive Sleep Apnea Syndrome Using a Laser Depth Measurement Module
title_full	Quantitative Morphometric Measurements of the Oropharynx in Obstructive Sleep Apnea Syndrome Using a Laser Depth Measurement Module
title_fullStr	Quantitative Morphometric Measurements of the Oropharynx in Obstructive Sleep Apnea Syndrome Using a Laser Depth Measurement Module
title_full_unstemmed	Quantitative Morphometric Measurements of the Oropharynx in Obstructive Sleep Apnea Syndrome Using a Laser Depth Measurement Module
title_sort	quantitative morphometric measurements of the oropharynx in obstructive sleep apnea syndrome using a laser depth measurement module
publisher	Dove Medical Press
publishDate	2020
url	https://doaj.org/article/b1f9dbb11e37487a8a3fc1aa65e033aa
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Quantitative Morphometric Measurements of the Oropharynx in Obstructive Sleep Apnea Syndrome Using a Laser Depth Measurement Module

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