Recognition accuracy of tumor extent using a prototype 3D endoscope for superficial gastric tumor: an ex vivo crossover study
Background and study aims Many studies have shown the utility of rigid three-dimensional (3 D) endoscopes in surgery, but few have reported the utility of flexible 3 D endoscopes. This ex vivo study was intended to investigate whether a newly developed 3 D endoscope (GIF-Y0083; Olympus) improves dia...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Georg Thieme Verlag KG
2018-05-01
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| Series: | Endoscopy International Open |
| Online Access: | http://www.thieme-connect.de/DOI/DOI?10.1055/a-0577-3009 |
| _version_ | 1830461963170217984 |
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| author | Kosuke Nomura Mitsuru Kaise Daisuke Kikuchi Toshiro Iizuka Yumiko Fukuma Yasutaka Kuribayashi Masami Tanaka Takahito Toba Tsukasa Furuhata Satoshi Yamashita Akira Matsui Toshifumi Mitani Shu Hoteya |
| author_facet | Kosuke Nomura Mitsuru Kaise Daisuke Kikuchi Toshiro Iizuka Yumiko Fukuma Yasutaka Kuribayashi Masami Tanaka Takahito Toba Tsukasa Furuhata Satoshi Yamashita Akira Matsui Toshifumi Mitani Shu Hoteya |
| author_sort | Kosuke Nomura |
| collection | DOAJ |
| description | Background and study aims Many studies have shown the utility of rigid three-dimensional (3 D) endoscopes in surgery, but few have reported the utility of flexible 3 D endoscopes. This ex vivo study was intended to investigate whether a newly developed 3 D endoscope (GIF-Y0083; Olympus) improves diagnostic accuracy for superficial gastric tumor.
Methods Twelve observers comprising experts, trainees, and novices (4 each) evaluated 2 D and 3 D images of 20 specimens resected by gastric ESD. Evaluation items were diagnostic accuracy of tumor extent and degree of confidence in assessing (a) tumor extent, (b) morphology, and (c) comprehensive recognition. The 2 D and 3 D endoscopy data were compared in a crossover analysis.
Results Overall, diagnostic accuracy was significantly higher with 3 D images (88.1 %) than with 2 D images (84.2 %) (P < 0.01). Comparison by skill level showed that 3 D images significantly improved diagnostic accuracy among novices but not among experts or trainees. Comparison by morphology showed that diagnostic accuracy did not differ significantly for type IIa/IIb lesions but improved significantly for type IIc lesions among trainees and novices. Overall, 3 D images significantly increased the degree of confidence in the assessment of all three items (a – c). Comparison by skill level showed similar results, and comparison by morphology showed that regardless of skill level, the degree of confidence in assessing all items (a – c) increased significantly only when examining type IIc lesions.
Conclusion Compared with 2 D images, 3 D images significantly improved both diagnostic accuracy of tumor extent and degree of confidence for diagnosing superficial gastric tumor. The utility of the 3 D endoscope was apparent among trainees and novices and for the diagnosis of type IIc lesions. |
| first_indexed | 2024-12-21T11:37:19Z |
| format | Article |
| id | doaj.art-3e00509d3f21445483c6c4f646a97cd9 |
| institution | Directory Open Access Journal |
| issn | 2364-3722 2196-9736 |
| language | English |
| last_indexed | 2024-12-21T11:37:19Z |
| publishDate | 2018-05-01 |
| publisher | Georg Thieme Verlag KG |
| record_format | Article |
| series | Endoscopy International Open |
| spelling | doaj.art-3e00509d3f21445483c6c4f646a97cd92022-12-21T19:05:24ZengGeorg Thieme Verlag KGEndoscopy International Open2364-37222196-97362018-05-010606E652E65810.1055/a-0577-3009Recognition accuracy of tumor extent using a prototype 3D endoscope for superficial gastric tumor: an ex vivo crossover studyKosuke Nomura0Mitsuru Kaise1Daisuke Kikuchi2Toshiro Iizuka3Yumiko Fukuma4Yasutaka Kuribayashi5Masami Tanaka6Takahito Toba7Tsukasa Furuhata8Satoshi Yamashita9Akira Matsui10Toshifumi Mitani11Shu Hoteya12Department of Gastroenterology, Toranomon Hospital, Tokyo, JapanDepartment of Gastroenterology, Toranomon Hospital, Tokyo, JapanDepartment of Gastroenterology, Toranomon Hospital, Tokyo, JapanDepartment of Gastroenterology, Toranomon Hospital, Tokyo, JapanDepartment of Gastroenterology, Toranomon Hospital, Tokyo, JapanDepartment of Gastroenterology, Toranomon Hospital, Tokyo, JapanDepartment of Gastroenterology, Toranomon Hospital, Tokyo, JapanDepartment of Gastroenterology, Toranomon Hospital, Tokyo, JapanDepartment of Gastroenterology, Toranomon Hospital, Tokyo, JapanDepartment of Gastroenterology, Toranomon Hospital, Tokyo, JapanDepartment of Gastroenterology, Toranomon Hospital, Tokyo, JapanDepartment of Gastroenterology, Toranomon Hospital, Tokyo, JapanDepartment of Gastroenterology, Toranomon Hospital, Tokyo, JapanBackground and study aims Many studies have shown the utility of rigid three-dimensional (3 D) endoscopes in surgery, but few have reported the utility of flexible 3 D endoscopes. This ex vivo study was intended to investigate whether a newly developed 3 D endoscope (GIF-Y0083; Olympus) improves diagnostic accuracy for superficial gastric tumor. Methods Twelve observers comprising experts, trainees, and novices (4 each) evaluated 2 D and 3 D images of 20 specimens resected by gastric ESD. Evaluation items were diagnostic accuracy of tumor extent and degree of confidence in assessing (a) tumor extent, (b) morphology, and (c) comprehensive recognition. The 2 D and 3 D endoscopy data were compared in a crossover analysis. Results Overall, diagnostic accuracy was significantly higher with 3 D images (88.1 %) than with 2 D images (84.2 %) (P < 0.01). Comparison by skill level showed that 3 D images significantly improved diagnostic accuracy among novices but not among experts or trainees. Comparison by morphology showed that diagnostic accuracy did not differ significantly for type IIa/IIb lesions but improved significantly for type IIc lesions among trainees and novices. Overall, 3 D images significantly increased the degree of confidence in the assessment of all three items (a – c). Comparison by skill level showed similar results, and comparison by morphology showed that regardless of skill level, the degree of confidence in assessing all items (a – c) increased significantly only when examining type IIc lesions. Conclusion Compared with 2 D images, 3 D images significantly improved both diagnostic accuracy of tumor extent and degree of confidence for diagnosing superficial gastric tumor. The utility of the 3 D endoscope was apparent among trainees and novices and for the diagnosis of type IIc lesions.http://www.thieme-connect.de/DOI/DOI?10.1055/a-0577-3009 |
| spellingShingle | Kosuke Nomura Mitsuru Kaise Daisuke Kikuchi Toshiro Iizuka Yumiko Fukuma Yasutaka Kuribayashi Masami Tanaka Takahito Toba Tsukasa Furuhata Satoshi Yamashita Akira Matsui Toshifumi Mitani Shu Hoteya Recognition accuracy of tumor extent using a prototype 3D endoscope for superficial gastric tumor: an ex vivo crossover study Endoscopy International Open |
| title | Recognition accuracy of tumor extent using a prototype 3D endoscope for superficial gastric tumor: an ex vivo crossover study |
| title_full | Recognition accuracy of tumor extent using a prototype 3D endoscope for superficial gastric tumor: an ex vivo crossover study |
| title_fullStr | Recognition accuracy of tumor extent using a prototype 3D endoscope for superficial gastric tumor: an ex vivo crossover study |
| title_full_unstemmed | Recognition accuracy of tumor extent using a prototype 3D endoscope for superficial gastric tumor: an ex vivo crossover study |
| title_short | Recognition accuracy of tumor extent using a prototype 3D endoscope for superficial gastric tumor: an ex vivo crossover study |
| title_sort | recognition accuracy of tumor extent using a prototype 3d endoscope for superficial gastric tumor an ex vivo crossover study |
| url | http://www.thieme-connect.de/DOI/DOI?10.1055/a-0577-3009 |
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