書誌事項
- タイトル別名
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- RECENT DEVELOPMENT AND USEFULNESS OF INFRARED ENDOSCOPIC SYSTEM FOR DIAGNOSIS OF GASTRIC CANCER
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抄録
Near-infrared rays, because of its limited scattering characteristics and low absorption by water and hemoglobin, can penetrate deeply into tissue. Using infrared rays, we have developed an infrared electronic endoscope system and evaluated its usefulness for assessing the depth of involvement of gastric cancers. Recently, we developed a new infrared videoendoscopic system (dual wave-length system). With this system, we can recognize submucosal vessels of gastric cancers in a greater detail with higher resolution under IR light. A total of 30 patients with depressed gastric cancers underwent infrared endoscopy. Twenty one (91%) of 23 intramucosal and submucosal cancers less than 1, 000um were observed as tumors with no stain or faint stain, whereas all (100%) of 7 more invasive cancers were observed as tumors with dense stain or pooling of the dye. Thus, the over all accuracy was 93% (28 of 30 tumors). Moreover, 95% (18 of 19) of tumors with ulcerative changes were correctly diagnosed. New infrared electronic endoscopic system is useful for diagnosing the depth of involvement of early gastric cancer either with or without ulcerative changes. This system will bring us further development in the diagnosis of gastric cancer.
収録刊行物
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- 日本消化器内視鏡学会雑誌
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日本消化器内視鏡学会雑誌 50 (3), 427-431, 2008
一般社団法人 日本消化器内視鏡学会
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詳細情報 詳細情報について
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- CRID
- 1390282679193768960
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- NII論文ID
- 130004255174
- 10021272437
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- NII書誌ID
- AN00192102
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- ISSN
- 18845738
- 03871207
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可