1 Kim HJ, "Tumor vessel: a valuable cholangioscopic clue of malignant biliary stricture" 52 : 635-638, 2000
2 Nishikawa T, "Preoperative assessment of longitudinal extension of cholangiocarcinoma with peroral video-cholangioscopy: a prospective study" 26 : 450-457, 2014
3 Osanai M, "Peroral video cholangioscopy to evaluate indeterminate bile duct lesions and preoperative mucosal cancerous extension: a prospective multicenter study" 45 : 635-642, 2013
4 Moon JH, "Peroral cholangioscopy: diagnostic and therapeutic applications" 144 : 276-282, 2013
5 Itoi T, "Peroral cholangioscopic diagnosis of biliary-tract diseases by using narrow-band imaging" 66 : 730-736, 2007
6 Choi HJ, "Overtube-balloon-assisted direct peroral cholangioscopy by using an ultra-slim upper endoscope" 69 : 935-940, 2009
7 Moon JH, "Intraductal balloon-guided direct peroral cholangioscopy with an ultraslim upper endoscope" 70 : 297-302, 2009
8 Itoi T, "Free-hand direct insertion ability into a simulated ex vivo model using a prototype multibending peroral direct cholangioscope" 76 : 454-457, 2012
9 Ishida Y, "Evaluation of magnifying endoscopy using narrow band imaging using ex vivo bile duct" 25 : 322-328, 2013
10 Kawakami H, "Endoscopic retrograde cholangiography versus peroral cholangioscopy to evaluate intraepithelial tumor spread in biliary cancer" 41 : 959-964, 2009
1 Kim HJ, "Tumor vessel: a valuable cholangioscopic clue of malignant biliary stricture" 52 : 635-638, 2000
2 Nishikawa T, "Preoperative assessment of longitudinal extension of cholangiocarcinoma with peroral video-cholangioscopy: a prospective study" 26 : 450-457, 2014
3 Osanai M, "Peroral video cholangioscopy to evaluate indeterminate bile duct lesions and preoperative mucosal cancerous extension: a prospective multicenter study" 45 : 635-642, 2013
4 Moon JH, "Peroral cholangioscopy: diagnostic and therapeutic applications" 144 : 276-282, 2013
5 Itoi T, "Peroral cholangioscopic diagnosis of biliary-tract diseases by using narrow-band imaging" 66 : 730-736, 2007
6 Choi HJ, "Overtube-balloon-assisted direct peroral cholangioscopy by using an ultra-slim upper endoscope" 69 : 935-940, 2009
7 Moon JH, "Intraductal balloon-guided direct peroral cholangioscopy with an ultraslim upper endoscope" 70 : 297-302, 2009
8 Itoi T, "Free-hand direct insertion ability into a simulated ex vivo model using a prototype multibending peroral direct cholangioscope" 76 : 454-457, 2012
9 Ishida Y, "Evaluation of magnifying endoscopy using narrow band imaging using ex vivo bile duct" 25 : 322-328, 2013
10 Kawakami H, "Endoscopic retrograde cholangiography versus peroral cholangioscopy to evaluate intraepithelial tumor spread in biliary cancer" 41 : 959-964, 2009
11 Larghi A, "Endoscopic direct cholangioscopy by using an ultra-slim upper endoscope: a feasibility study" 63 : 853-857, 2006
12 Itoi T, "Diagnostic value of image-enhanced video cholangiopancreatoscopy" 19 : 557-566, 2009
13 Fukuda Y, "Diagnostic utility of peroral cholangioscopy for various bile-duct lesions" 62 : 374-382, 2005
14 Itoi T, "Clinical evaluation of a prototype multi-bending peroral direct cholangioscope" 26 : 100-107, 2014
15 Azeem N, "Cholangioscopy with narrow-band imaging in patients with primary sclerosing cholangitis undergoing ERCP" 79 : 773-779, 2014
16 Seo DW, "Cholangioscopic findings in bile duct tumors" 52 : 630-634, 2000
17 Ishida Y, "Can image-enhanced cholangioscopy distinguish benign from malignant lesions in the biliary duct?" 29 : 611-625, 2015
18 Lee YN, "A newly modified access balloon catheter for direct peroral cholangioscopy by using an ultraslim upper endoscope" 2015