| 特集名 | 拡大内視鏡による深達度診断 -- V型pit patternを中心に | |
|---|---|---|
| 題名 | pit pattern診断の新たな展開 (4) 狭帯化RGB filter内蔵Narrow Band Imaging (NBI) systemを用いたpit pattern診断 | |
| 発刊年月 | 2001年 11月 | |
| 著者 | 佐野 寧 | 国立がんセンター東病院内視鏡部消化器内科 |
| 著者 | 浜本 康夫 | 札幌医科大学第一内科 |
| 著者 | 傅 光義 | 国立がんセンター東病院内視鏡部消化器内科 |
| 著者 | 吉野 孝之 | 国立がんセンター東病院内視鏡部消化器内科 |
| 著者 | 秋野 公臣 | 国立がんセンター東病院内視鏡部消化器内科 |
| 著者 | 堅田 親利 | 国立がんセンター東病院内視鏡部消化器内科 |
| 著者 | 前田 真美 | 国立がんセンター東病院内視鏡部消化器内科 |
| 著者 | 奥野 達哉 | 国立がんセンター東病院内視鏡部消化器内科 |
| 著者 | 加藤 茂治 | 加藤胃腸科・内科クリニック |
| 著者 | 藤井 隆広 | 国立がんセンター中央病院内視鏡部 |
| 著者 | 吉田 茂昭 | 国立がんセンター東病院内視鏡部消化器内科 |
| 【 要旨 】 | 要旨はありません。 | |
| Theme | Pit pattern diagnosis of sm invasive colorectal carcinoma | |
|---|---|---|
| Title | New diagnostic method based on color imaging using Narrow Band Imaging (NBI) system for gastrointestinal tract | |
| Author | Yasushi Sano | Digestive Endoscopy and Gastrointestinal Oncology Division, National Cancer Center Hospital East |
| Author | Yasuo Hamamoto | Department of Medicine, Sapporo Medical University |
| Author | Fu Kuang-I | Digestive Endoscopy and Gastrointestinal Oncology Division, National Cancer Center Hospital East |
| Author | Takayuki Yoshino | Digestive Endoscopy and Gastrointestinal Oncology Division, National Cancer Center Hospital East |
| Author | Kimio Akino | Digestive Endoscopy and Gastrointestinal Oncology Division, National Cancer Center Hospital East |
| Author | Chikatoshi Katada | Digestive Endoscopy and Gastrointestinal Oncology Division, National Cancer Center Hospital East |
| Author | Mami Maeda | Digestive Endoscopy and Gastrointestinal Oncology Division, National Cancer Center Hospital East |
| Author | Tatsuya Okuno | Digestive Endoscopy and Gastrointestinal Oncology Division, National Cancer Center Hospital East |
| Author | Shigeharu Kato | Kato Clinic |
| Author | Takahiro Fujii | National Cancer Center Central Hospital Narrow Band Imaging system, endoscopy |
| Author | Shigeaki Yoshida | Digestive Endoscopy and Gastrointestinal Oncology Division, National Cancer Center Hospital East |
| [ Summary ] | Background and aim: Correct assessment of gastrointestinal mucosal color is extremely important in endoscopy. We have developed an endoscopic spectroscopy system (ESS) to clarify spectral characteristics of neoplastic lesions in the gastrointestinal tract. We previously reported that ESS, using short wavelength light, may be useful to distinguish neoplasms from non-neoplasms. We recently developed a narrow band imaging (NBI) system that can observe image limited short wavelength light (blue color area: B) on a video monitor. The aim of this pilot study was to clarify the clinical usefulness of NBI in the gastro intestinal tract. Methods: A total of 132 lesions (73 colorectal lesions in 50 patients, 39 gastric lesions in 32 patients, 20 esophageal lesions in 18 patients) were included in this pilot study, at the National Cancer Center Hospital East, Kashiwa, Japan, from December 1999 to October 2000. We changed the spectral feature of the RGB optical filters at the front of the Xenon lighting source (CLV-U40, Olympus Optical Co., Ltd.). The ranges of wave length in the new RGB filter were R; 590-610nm, G; 530-550nm and B; 400-430nm, respectively. The NBI system was combined with a sequential electronic endoscope system with ordinary lighting, a lighting system with a new filter, a video recording system and a digital image filing system. All lesions in this study were observed using a magnifying endoscope (GIF-Q240Z, Olympus Optical Co., Ltd.). Both ordinary and magnifying observations were carried out for each lesion. In each observation, we observed the same portion, using both systems with the ordinary filter and with the new filter. All pictures were recorded on both video and an image filing system. Differences between the recorded pictures in each system were evaluated by three experienced endoscopists. Results: I) In all lesions, capillary vessels, which could not be seen with the ordinary filter, were observed in the B image with the new filter. II) The mucosal crypt pattern of the colorectum and stomach could be observed without dye spraying with the B image, using the new filter. III) The margin of early gastrointestinal cancer was clearly detected on the B image with the new filter. Conclusion: This preliminary data suggests that the NBI system may be useful for observation of surface structures and capillary vessels in B images. Our further intention is to apply this system to different, histological kinds of gastrointestinal tract conditions. |
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