Evaluation of the visibility of early gastric cancer using linked color imaging and blue laser imaging
Abstract Background Blue laser imaging (BLI) and linked color imaging (LCI) are the color enhancement features of the LASEREO endoscopic system, which provide a narrow band light observation function and expansion and reduction of the color information, respectively. Methods We examined 82 patients...
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| Format: | Article |
| Language: | English |
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BMC
2017-12-01
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| Series: | BMC Gastroenterology |
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| Online Access: | http://link.springer.com/article/10.1186/s12876-017-0707-5 |
| _version_ | 1818147448719147008 |
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| author | Yoshikazu Yoshifuku Yoji Sanomura Shiro Oka Mio Kurihara Takeshi Mizumoto Tomohiro Miwata Yuji Urabe Toru Hiyama Shinji Tanaka Kazuaki Chayama |
| author_facet | Yoshikazu Yoshifuku Yoji Sanomura Shiro Oka Mio Kurihara Takeshi Mizumoto Tomohiro Miwata Yuji Urabe Toru Hiyama Shinji Tanaka Kazuaki Chayama |
| author_sort | Yoshikazu Yoshifuku |
| collection | DOAJ |
| description | Abstract Background Blue laser imaging (BLI) and linked color imaging (LCI) are the color enhancement features of the LASEREO endoscopic system, which provide a narrow band light observation function and expansion and reduction of the color information, respectively. Methods We examined 82 patients with early gastric cancer (EGC) diagnosed between April 2014 and August 2015. Five expert and 5 non-expert endoscopists retrospectively compared images obtained on non-magnifying BLI bright mode (BLI-BRT) and LCI with those obtained via conventional white light imaging (WLI). Interobserver agreement was also assessed. Results In experts’ evaluation of the images, an improvement in visibility was observed in 73% (60/82) and 20% (16/82) of cases under LCI and BLI-BRT, respectively. In non-experts’ evaluation of the images, an improvement in visibility was observed in 76.8% (63/82) and 24.3% (20/82) of cases under LCI and BLI-BRT, respectively. There were no significant differences between experts and non-experts in the evaluation of the images. The improvement in visibility was significantly higher with LCI than with BLI-BRT in experts and non-experts (p < 0.01). With regard to tumor color on WLI, the improvement in the visibility of reddish and whitish tumors was significantly higher than that of isochromatic tumors when LCI was used. The improvement in visibility with LCI was observed in 71% (12/17) and 74% (48/65) of patients with and without Helicobacter pylori (Hp) eradication, respectively; no significant difference in improvement was observed between these groups. The interobserver agreement was good to satisfactory at ≥ 0.62. Conclusions In conclusion, our study showed that LCI improved the visibility of EGC, regardless of the level of endoscopists’ experience or Hp eradication in patients, particularly for EGCs with a reddish or whitish color. The improvement in visibility was significantly higher with LCI than that with BLI. |
| first_indexed | 2024-12-11T12:35:25Z |
| format | Article |
| id | doaj.art-f722907aef7345ef8ecaff8fdb94294b |
| institution | Directory Open Access Journal |
| issn | 1471-230X |
| language | English |
| last_indexed | 2024-12-11T12:35:25Z |
| publishDate | 2017-12-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Gastroenterology |
| spelling | doaj.art-f722907aef7345ef8ecaff8fdb94294b2022-12-22T01:07:09ZengBMCBMC Gastroenterology1471-230X2017-12-011711710.1186/s12876-017-0707-5Evaluation of the visibility of early gastric cancer using linked color imaging and blue laser imagingYoshikazu Yoshifuku0Yoji Sanomura1Shiro Oka2Mio Kurihara3Takeshi Mizumoto4Tomohiro Miwata5Yuji Urabe6Toru Hiyama7Shinji Tanaka8Kazuaki Chayama9Department of Gastroenterology and Metabolism, Graduate School of Biomedical Sciences, Hiroshima UniversityDepartment of Endoscopy, Hiroshima University HospitalDepartment of Gastroenterology and Metabolism, Graduate School of Biomedical Sciences, Hiroshima UniversityDepartment of Gastroenterology and Metabolism, Graduate School of Biomedical Sciences, Hiroshima UniversityDepartment of Gastroenterology and Metabolism, Graduate School of Biomedical Sciences, Hiroshima UniversityDepartment of Gastroenterology and Metabolism, Graduate School of Biomedical Sciences, Hiroshima UniversityDepartment of Gastroenterology and Metabolism, Graduate School of Biomedical Sciences, Hiroshima UniversityHealth Service Center, Hiroshima UniversityDepartment of Endoscopy, Hiroshima University HospitalDepartment of Gastroenterology and Metabolism, Graduate School of Biomedical Sciences, Hiroshima UniversityAbstract Background Blue laser imaging (BLI) and linked color imaging (LCI) are the color enhancement features of the LASEREO endoscopic system, which provide a narrow band light observation function and expansion and reduction of the color information, respectively. Methods We examined 82 patients with early gastric cancer (EGC) diagnosed between April 2014 and August 2015. Five expert and 5 non-expert endoscopists retrospectively compared images obtained on non-magnifying BLI bright mode (BLI-BRT) and LCI with those obtained via conventional white light imaging (WLI). Interobserver agreement was also assessed. Results In experts’ evaluation of the images, an improvement in visibility was observed in 73% (60/82) and 20% (16/82) of cases under LCI and BLI-BRT, respectively. In non-experts’ evaluation of the images, an improvement in visibility was observed in 76.8% (63/82) and 24.3% (20/82) of cases under LCI and BLI-BRT, respectively. There were no significant differences between experts and non-experts in the evaluation of the images. The improvement in visibility was significantly higher with LCI than with BLI-BRT in experts and non-experts (p < 0.01). With regard to tumor color on WLI, the improvement in the visibility of reddish and whitish tumors was significantly higher than that of isochromatic tumors when LCI was used. The improvement in visibility with LCI was observed in 71% (12/17) and 74% (48/65) of patients with and without Helicobacter pylori (Hp) eradication, respectively; no significant difference in improvement was observed between these groups. The interobserver agreement was good to satisfactory at ≥ 0.62. Conclusions In conclusion, our study showed that LCI improved the visibility of EGC, regardless of the level of endoscopists’ experience or Hp eradication in patients, particularly for EGCs with a reddish or whitish color. The improvement in visibility was significantly higher with LCI than that with BLI.http://link.springer.com/article/10.1186/s12876-017-0707-5Early gastric cancerLinked color imagingBlue laser imagingVisibility |
| spellingShingle | Yoshikazu Yoshifuku Yoji Sanomura Shiro Oka Mio Kurihara Takeshi Mizumoto Tomohiro Miwata Yuji Urabe Toru Hiyama Shinji Tanaka Kazuaki Chayama Evaluation of the visibility of early gastric cancer using linked color imaging and blue laser imaging BMC Gastroenterology Early gastric cancer Linked color imaging Blue laser imaging Visibility |
| title | Evaluation of the visibility of early gastric cancer using linked color imaging and blue laser imaging |
| title_full | Evaluation of the visibility of early gastric cancer using linked color imaging and blue laser imaging |
| title_fullStr | Evaluation of the visibility of early gastric cancer using linked color imaging and blue laser imaging |
| title_full_unstemmed | Evaluation of the visibility of early gastric cancer using linked color imaging and blue laser imaging |
| title_short | Evaluation of the visibility of early gastric cancer using linked color imaging and blue laser imaging |
| title_sort | evaluation of the visibility of early gastric cancer using linked color imaging and blue laser imaging |
| topic | Early gastric cancer Linked color imaging Blue laser imaging Visibility |
| url | http://link.springer.com/article/10.1186/s12876-017-0707-5 |
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