Evaluation of the combined use of narrow band imaging and high‐speed imaging to discriminate laryngeal lesions

Volgger, Veronika; Felicio, A.A; Lohscheller, Jörg; Englhard, Anna S.; Al-Muzaini, Hanan; Betz, Christian; Schuster, Maria

doi:10.1002/lsm.22652

Cited by 16 publications

(14 citation statements)

References 40 publications

(88 reference statements)

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“…However, these conventional methods cannot capture subsurface composition of the TVFs and associated pathologies. State‐of‐the‐art clinical imaging includes videostroboscopy supplemented by videokymography, high‐speed videolaryngoscopy with or without narrow band imaging, or depth‐kymography, but their uses are uncommon in general practice . Although these technologies functionally analyze the laryngeal mucosal wave during phonation, they still only assess the surface.…”

Section: Introductionmentioning

confidence: 99%

Computational analysis of six optical coherence tomography systems for vocal fold imaging: A comparison study

et al. 2019

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Objectives There have been many advancements in laryngeal imaging using optical coherence tomography (OCT), with varying system design and probes for use in research, office, and operating room settings. We evaluated the performance of six distinct OCT systems in imaging porcine vocal folds (cords) using computational image processing and segmentation. Methods Porcine vocal folds were scanned using six OCT systems. Imaging system and probe performance were quantitatively assessed for signal penetration, layer differentiation, and epithelium (EP) measurement. Fitted exponential decay curves with corresponding α constant and intensity thresholding segmentation were utilized to quantify the aforementioned parameters. Results The smallest average α constant and deepest signal penetration was of the SS‐OCT 1700 nm 90 kHz microscope system (α = −1.74), followed by the SS‐OCT 1310 nm 200 kHz VCSEL microscope system (α = −1.99), and SS‐OCT 1310 nm 50 kHz rigid forward viewing endoscope system (α = −2.23). The EP was not readily visualized for three out of six systems, but was detected using automated segmentation. Average EP thickness (mean ± SD) was calculated as 55.79 ± 31.86 μm which agrees favorably with previous literature. Conclusion Comparisons of OCT systems are challenging, as they encompass different probe design, optical path, and lasers, depending on application. Practical evaluation of different systems using computer based quantitative image processing and segmentation revealed basic, constructive information, such as EP measurements. To further validate the comparisons of system performance with clinical usability, in vivo human laryngeal imaging will be conducted. Further development of automated image processing and segmentation can be useful in rapid analysis of information. Lasers Surg. Med. 51:412–422, 2019. © 2019 Wiley Periodicals, Inc.

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Section: Introductionmentioning

confidence: 99%

Computational analysis of six optical coherence tomography systems for vocal fold imaging: A comparison study

et al. 2019

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“…Compared to the known electroglottography, an advanced examination instrument could be created . Furthermore, innovative endoscopic imaging techniques and new optical visualization modes are currently developed and tested to enhance the diagnostic sensitivity and specificity, especially in precancerous lesions . The long‐term goal is the development of a multimodal system with rigid and flexible endoscopes for more comprehensive laryngostroboscopic examination.…”

Section: Discussionmentioning

confidence: 99%

“…43,44 Furthermore, innovative endoscopic imaging techniques and new optical visualization modes are currently developed and tested to enhance the diagnostic sensitivity and specificity, especially in precancerous lesions. [45][46][47] The long-term goal is the development of a multimodal system with rigid and flexible endoscopes for more comprehensive laryngostroboscopic examination. This system should combine the advantages of direct and indirect laryngoscopy and achieve significant improvements in imaging quality.…”

Section: Discussionmentioning

confidence: 99%

Development of three‐dimensional laryngostroboscopy for office‐based laryngeal diagnostics and phonosurgical therapy

et al. 2018

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Objective To develop a three‐dimensional (3D) laryngostroboscopic examination unit, compare the optic playback quality in relation to established 2D procedures, and report the first case series using 3D rigid laryngostroboscopy for diagnosis and management of laryngotracheal diseases. Study Design Laboratory study, prospective case series. Methods The optical efficacy of newly developed rigid 3D endoscopes was examined in a laboratory setting. Diagnostic suitability was investigated in 100 subjects (50 male, 50 female) receiving 2D high‐definition (HD) and 3D laryngostroboscopy. Two of the subjects subsequently underwent 3D‐assisted office‐based transoral phonosurgery under local anesthesia. Main outcome measures were comparative visualization of laryngotracheal pathologies, influence on preoperative planning, and evaluation of prognostic factors for the outcome of phonosurgical interventions. Results Three‐dimensional endostroboscopic procedures were effectively optimized to establish an examination protocol for all‐day clinical use. Office‐based 3D laryngostroboscopy was successfully applied in subjects with normal anatomy (n = 10) and various laryngotracheal findings (n = 90). In comparison to 2D HD videolaryngostroboscopy, the 3D view offered enhanced visualization of laryngotracheal anatomy, with qualitatively improved depth perception and spatial representation. In organic pathologies, this resulted in a more precise indication of phonosurgical procedures, increased accuracy in surgical planning, facilitated office‐based endoscopic surgery, and better evaluation of prognostic factors for the outcome of phonosurgical interventions. Conclusion Three‐dimensional laryngostroboscopy proved to increase the understanding of functional and surgical anatomy. Its application has enormous potential for improving the diagnostic value of laryngoscopy, surgical precision in laryngotracheal interventions, tissue preservation, and methods of teaching. Level of Evidence NA Laryngoscope, 128:2823–2831, 2018

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“…The classification proposed by the ELS can be used in combination with NBI-CE for the differentiation between (pre)malignant lesions (and papillomatosis) and benign lesions (other than papillomatosis), allowing experienced surgeons to optimize therapeutic plans and avoid unnecessary multiple surgeries. A combination of NBI-CE to other preoperative or intraoperative endoscopic modalities can probably further increase the diagnostic efficacy of the method, as proposed in previous studies [18,27]. For daily clinical practice, it seems reasonable to propose a detailed intraoperative examination of specific regions of interest using NBI-CE following the examination of any suspect lesion with WLE and an image-enhancing modality such as NBI.…”

Section: Key Findings Of the Present Study In Relation To Previous Rementioning

confidence: 91%

Evaluation of Vascular Patterns Using Contact Endoscopy and Narrow-Band Imaging (CE-NBI) for the Diagnosis of Vocal Fold Malignancy

Davaris

Lux

Esmaeili

et al. 2020

Cancers

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The endoscopic detection of perpendicular vascular changes (PVC) of the vocal folds has been associated with vocal fold cancer, dysplastic lesions, and papillomatosis, according to a classification proposed by the European Laryngological Society (ELS). The combination of contact endoscopy with narrow-band imaging (NBI-CE) allows intraoperatively a highly contrasted, real-time visualization of vascular changes of the vocal folds. Aim of the present study was to determine the association of PVC to specific histological diagnoses, the level of interobserver agreement in the detection of PVC, and their diagnostic effectiveness in diagnosing laryngeal malignancy. The evaluation of our data confirmed the association of PVC to vocal fold cancer, dysplastic lesions, and papillomatosis. The level of agreement between the observers in the identification of PVC was moderate for the less-experienced observers and almost perfect for the experienced observers. The identification of PVC during NBI-CE proved to be a valuable indicator for diagnosing malignant and premalignant lesions.

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Evaluation of the combined use of narrow band imaging and high‐speed imaging to discriminate laryngeal lesions

Cited by 16 publications

References 40 publications

Computational analysis of six optical coherence tomography systems for vocal fold imaging: A comparison study

Computational analysis of six optical coherence tomography systems for vocal fold imaging: A comparison study

Development of three‐dimensional laryngostroboscopy for office‐based laryngeal diagnostics and phonosurgical therapy

Evaluation of Vascular Patterns Using Contact Endoscopy and Narrow-Band Imaging (CE-NBI) for the Diagnosis of Vocal Fold Malignancy

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