Endobronchial Ultrasonography

Kurimoto, Noriaki; Fielding, David; Musani, Ali I.; Kniese, Christopher; Morita, Katsusada

doi:10.1002/9781119233961

Cited by 2 publications

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“…We recognized that airway collapse can be prevented or collapsed airways reopened by injecting a small amount of physiological saline into the airway, simultaneously eliminating obstructing mucus (shown in Fig. 1a1, a2) [1]. We desired to establish a novel method to directly observe lesions in the peripheral airway using UTB.…”

Section: Introductionmentioning

confidence: 99%

“…However, bronchoscopic images using UTB without a miniature charge-coupled device were not high resolution, and no comparisons with pathological findings were presented. The aims of our study are (1) to demonstrate from pathology that the LBL on the surface of the bronchial epithelium with NBI under PSIT indicates bronchial cilia and (2) to classify bronchoscopic findings of PPT for accurate bronchoscopic diagnosis (Fig. 1).…”

Section: Introductionmentioning

confidence: 99%

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The Usefulness of a Simple Classification for Bronchoscopic Findings for Diagnosis of Peripheral Pulmonary Tumour

et al. 2021

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Background: Normal bronchial epithelium has been described in terms of transparency and smoothness. No studies have compared bronchoscopic and pathological findings in the identification of bronchial epithelium. Objectives: This study aimed to classify bronchoscopic findings for peripheral pulmonary tumour (PPT) for accurate bronchoscopic diagnosis accounting for the presences of bronchial epithelium and bronchial stenosis using an ultrathin bronchoscope. Methods: We performed endocytoscopy using narrow-band imaging (NBI) of specimens immediately after lobectomy to investigate the normal bronchial epithelium under the physiological saline injection technique (PSIT) prior to classification of PPT. A retrospective study to classify bronchoscopic findings included 46 patients diagnosed with malignancy by bronchoscopy for PPT. Results: We recognized a “light blue line” (LBL) with NBI under PSIT, corresponding to strong reflection of short-wavelength light by cilia on the epithelial surface in an ex vivo endocytoscopic study. Bronchoscopic findings of PPT were classified morphologically into stenotic type (ST) and non-stenotic type (NonST). Tumours were also classified as exposed type (ET) and non-exposed type (NonET) based on the presence of epithelium. Most ST and NonET lesions (74%) were adenocarcinoma. Among squamous cell carcinoma, 55% were categorized as ST and ET. All NonST and NonET cases were adenocarcinoma. A significant difference in the presence of LBL was seen between ET and NonET. Conclusions: Our simple classification based on the appearance of stenosis and LBL in PPT may facilitate pathological diagnosis.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Usefulness of a Simple Classification for Bronchoscopic Findings for Diagnosis of Peripheral Pulmonary Tumour

et al. 2021

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“…The study was conducted at a dedicated endoscopy training center. All participants received a 40-minute lecture outlining the Kurimoto method ( 35 ) before separating into preassigned groups A and B. Participants in group A were regarded as the intervention group and received a 15-minute opportunity to practice R-EBUS, using the low-difficulty 3D-printed models, with instruction from an experienced endoscopist.…”

Section: Methodsmentioning

confidence: 99%

Teaching Radial Endobronchial Ultrasound with a Three-Dimensional–printed Radial Ultrasound Model

Ridgers

Coles‐Black

et al. 2021

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Background Peripheral pulmonary lesion (PPL) incidence is rising because of increased chest imaging sensitivity and frequency. For PPLs suspicious for lung cancer, current clinical guidelines recommend tissue diagnosis. Radial endobronchial ultrasound (R-EBUS) is a bronchoscopic technique used for this purpose. It has been observed that diagnostic yield is impacted by the ability to accurately manipulate the radial probe. However, such skills can be acquired, in part, from simulation training. Three-dimensional (3D) printing has been used to produce training simulators for standard bronchoscopy but has not been specifically used to develop similar tools for R-EBUS. Objective We report the development of a novel ultrasound-compatible, anatomically accurate 3D-printed R-EBUS simulator and evaluation of its utility as a training tool. Methods Computed tomography images were used to develop 3D-printed airway models with ultrasound-compatible PPLs of “low” and “high” technical difficulty. Twenty-one participants were allocated to two groups matched for prior R-EBUS experience. The intervention group received 15 minutes to pretrain R-EBUS using a 3D-printed model, whereas the nonintervention group did not. Both groups then performed R-EBUS on 3D-printed models and were evaluated using a specifically developed assessment tool. Results For the “low-difficulty” model, the intervention group achieved a higher score (21.5 ± 2.02) than the nonintervention group (17.1 ± 5.7), reflecting 26% improvement in performance ( P = 0.03). For the “high-difficulty” model, the intervention group scored 20.2 ± 4.21 versus 13.3 ± 7.36, corresponding to 52% improvement in performance ( P = 0.02). Participants derived benefit from pretraining with the 3D-printed model, regardless of prior experience level. Conclusion 3D-printing can be used to develop simulators for R-EBUS education. Training using these models significantly improves procedural performance and is effective in both novice and experienced trainees.

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Endobronchial Ultrasonography

Cited by 2 publications

References 0 publications

The Usefulness of a Simple Classification for Bronchoscopic Findings for Diagnosis of Peripheral Pulmonary Tumour

The Usefulness of a Simple Classification for Bronchoscopic Findings for Diagnosis of Peripheral Pulmonary Tumour

Teaching Radial Endobronchial Ultrasound with a Three-Dimensional–printed Radial Ultrasound Model

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