Operational effectiveness of three-dimensional flexible endoscopy: an ex vivo study using a new model

Nomura, Kosuke; Kikuchi, Daisuke; Kaise, Mitsuru; Iizuka, Toshiro; Ochiai, Yasutoshi; Suzuki, Yugo; Fukuma, Yumiko; Kuribayashi, Yasutaka; Tanaka, Masami; Y, Okamoto; Furuhata, Tsukasa; Yamashita, Satoshi; Matsui, Akira; Mitani, Toshifumi; Hoteya, Shu

doi:10.1007/s00464-018-06645-2

Cited by 4 publications

(9 citation statements)

References 14 publications

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“…The 3-D system in flexible endoscopy offers the following advantages in an ex vivo model: improved recognition of the lesion extent in novice endoscopists, reduction of the ESD procedure time, and improvement of the procedural accuracy. 11,12,45 Higuchi et al showed that VAS for endoscopic recognition (lesion morphology, lesion extent, and comprehensive cognition) and for technical ease of ESD marking were significantly better under 3-D observation than under 2-D observation in gastric ESD in humans. 46 The 3-D system in ESD facilitated good recognition of lesions, mucosal incisions, and submucosal layers in clinical practice.…”

Section: Discussionmentioning

confidence: 99%

“…The 3‐D system in flexible endoscopy offers the following advantages in an ex vivo model: improved recognition of the lesion extent in novice endoscopists, reduction of the ESD procedure time, and improvement of the procedural accuracy 11,12,45 . Higuchi et al .…”

Section: Discussionmentioning

confidence: 99%

“…Recently, a prototype of a flexible endoscope with a 3-D system (GIF-Y0080; Olympus Corporation, Tokyo, Japan), has been developed. 11,12 There are several case reports on ESD using 3-D systems (3-D ESD) that have attracted much attention for their practicality. 13,14 The 3-D system is already popular in laparoscopic and robotic surgery.…”

Section: Introductionmentioning

confidence: 99%

“…While the focus has been on improving therapeutic devices and ESD techniques, there have been few attempts to reduce the procedure's time and complications focusing on the view in the endoscope monitor. Recently, a prototype of a flexible endoscope with a 3‐D system (GIF‐Y0080; Olympus Corporation, Tokyo, Japan), has been developed 11,12 . There are several case reports on ESD using 3‐D systems (3‐D ESD) that have attracted much attention for their practicality 13,14 …”

Section: Introductionmentioning

confidence: 99%

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The safety and feasibility of endoscopic submucosal dissection using a flexible three‐dimensional endoscope for early gastric cancer and superficial esophageal cancer: A prospective observational study

Shinmura

Yamamoto

Inaba

et al. 2022

J of Gastro and Hepatol

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Background and Aim: Endoscopic submucosal dissection (ESD) is performed as one of standard treatments for patients with early gastric cancer (EGC) and superficial esophageal squamous cancer (SESCC). A prototype of a flexible endoscope with a 3-D system has been recently developed. This study aimed to investigate the safety and feasibility of ESD using a 3-D flexible endoscope (3-D ESD) for EGC and SESCC. Methods: This single-center, prospective, observational study enrolled patients who underwent planned 3-D ESD. The clinical outcomes, including the incidence of adverse events and treatment results, were analyzed. Visibility and manipulation during 3-D ESD were evaluated using a visual analog scale (VAS). We also evaluated the effect of the 3-D system on the endoscopist using VAS and the critical flicker fusion frequency (CFFF). Results: We analyzed 47 EGC and 20 SESCC cases. There are no bleeding cases that required transfusion and perforation during 3-D ESD in both EGC and SESCC patients. However, the incidence of delayed bleeding and delayed perforation was 1.5% (one case) each. The mean VAS scores for recognizing the submucosal layer during the submucosal dissection, visual perception of blood vessel, and depth perception were 72.7 ± 22.2, 74.7 ± 21.8, and 78.2 ± 19.9, respectively. In contrast, the mean VAS score for manipulation was 25.4 ± 19.7. Among endoscopists, there was no significant difference in the VAS of eyestrain and headache before and after ESD, and there was no significant difference in the CFFF. Conclusion:The safety and feasibility of 3-D ESD for EGC and SESCC are acceptable in both patients and endoscopists.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The safety and feasibility of endoscopic submucosal dissection using a flexible three‐dimensional endoscope for early gastric cancer and superficial esophageal cancer: A prospective observational study

Shinmura

Yamamoto

Inaba

et al. 2022

J of Gastro and Hepatol

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“…Recently, 3D flexible endoscopy was clinically applied in humans and reported to be feasible for ESD [ 14 ]. However, while several studies have recently addressed the efficiency of 3D flexible endoscopy in this procedure [ 15 ], very few clinical studies have evaluated the usefulness for making an endoscopic diagnosis.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional visualization improves the endoscopic diagnosis of superficial gastric neoplasia

et al. 2021

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Background Three-dimensional (3D) technology has been used in many fields, including flexible endoscopy. We evaluated the usefulness of 3D visualization for endoscopically diagnosing superficial gastric neoplasia. Methods Twelve participants (4 novices, 4 trainees and 4 experts) evaluated two-dimensional (2D) and 3D endoscopic still images of 28 gastric neoplasias, obtained before ESD with white-light imaging (WLI) and narrow-band imaging (NBI). Assessments of the delineation accuracy of tumor extent and tumor morphology under 2D and 3D visualization were based on the histopathological diagnosis of ESD specimens. Participants answered visual analog scale (VAS) questionnaires (0–10, worst to best) concerning the (a) ease of recognition of lesion morphology, (b) lesion extent and (c) comprehensive endoscopic cognition under 2D and 3D visualization. The endpoints were the accuracy of tumor extent and morphology type and the degree of confidence in assessing (a)–(c). Results The delineation accuracy of lesion extent [mean (95% confidence interval)] with WLI under 3D visualization [60.2% (56.1–64.3%)] was significantly higher than that under 2D visualization [52.3% (48.2–56.4%)] (P < 0.001). The accuracy with NBI under 3D visualization [70.3% (66.8–73.7%)] was also significantly higher than that under 2D visualization [64.2% (60.7–67.4%)] (P < 0.001). The accuracy of the morphology type with NBI under 3D visualization was significantly higher than that under 2D visualization (P = 0.004). The VAS for all aspects of endoscopic recognition under 3D visualization was significantly better than that under 2D visualization (P < 0.01). Conclusions Three-dimensional visualization can enhance the diagnostic quality for superficial gastric tumors.

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Imaging Equipment and Operating Room Set‐Up

Brandão¹,

Chamness²

2021

Small Animal Laparoscopy and Thoracoscopy

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Operational effectiveness of three-dimensional flexible endoscopy: an ex vivo study using a new model

Cited by 4 publications

References 14 publications

The safety and feasibility of endoscopic submucosal dissection using a flexible three‐dimensional endoscope for early gastric cancer and superficial esophageal cancer: A prospective observational study

The safety and feasibility of endoscopic submucosal dissection using a flexible three‐dimensional endoscope for early gastric cancer and superficial esophageal cancer: A prospective observational study

Three-dimensional visualization improves the endoscopic diagnosis of superficial gastric neoplasia

Imaging Equipment and Operating Room Set‐Up

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