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Value of adding T1-weighted image to MR cholangiopancreatography for detecting intrahepatic biliary stones

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dc.contributor.authorKim, Young Kon-
dc.contributor.authorKim, Chong Soo-
dc.contributor.authorLee, Jeong Min-
dc.contributor.authorKo, Seog Wan-
dc.contributor.authorChung, Gyung Ho-
dc.contributor.authorLee, Seung Ok-
dc.contributor.authorHan, Young Min-
dc.contributor.authorLee, Sang Yong-
dc.date.accessioned2009-10-27T14:24:32Z-
dc.date.available2009-10-27T14:24:32Z-
dc.date.issued2006-
dc.identifier.citationAJR 2006; 187:W267-274en
dc.identifier.issn0361-803X (Print)-
dc.identifier.issn1546-3141 (Electronic)-
dc.identifier.urihttp://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=16928904-
dc.identifier.urihttps://hdl.handle.net/10371/10827-
dc.description.abstractOBJECTIVE: The purpose of this study was to assess the value of adding a T1-weighted image to MR cholangiopancreatography (MRCP) to detect bile duct stones. MATERIALS AND METHODS: During a 30-month period, 148 patients suspected of having biliary stones and who underwent MRI including MRCP, a fat-suppressed T1-weighted fast low-angle shot (FLASH) sequence, and an axial HASTE sequence were enrolled in this study. The biliary stones were confirmed by ERCP, surgery, and percutaneous transhepatic cholangiography. Of these 148 patients, 73 had extrahepatic stones, 45 had intrahepatic stones, 20 had both extrahepatic and intrahepatic stones, and 10 had no biliary stones. Two separate sets of images, the MRCP set (composed of MRCP and axial HASTE) and the combined interpretion of the MRCP set and the T1-weighted image, were analyzed independently and separately by two observers. The diagnostic accuracy was evaluated using the receiver operating characteristic method. The sensitivity and specificity were also calculated. RESULTS: For common duct stones, the diagnostic accuracy and the sensitivity of both image sets showed similar values without any significant difference (0.998 [97.8%] for the combined interpretation; 0.988 [97.8%] for observer 1 and 0.995 [96.8%] for observer 2 for the MRCP set). However, for the intrahepatic stones, the diagnostic accuracy (0.993) and the sensitivity (98.5%) of the combined interpretation were significantly higher than those of the MRCP set for the two observers (0.926 [83.8%] for observer 1 and 0.922 [85.3%] for observer 2) (p < 0.05). No significant difference was seen in the specificity of the two image sets for both the intrahepatic and the common duct stones. CONCLUSION: Combining the axial T1-weighted image with MRCP is valuable for detecting intrahepatic stones.en
dc.language.isoenen
dc.publisherAmerican Roentgen Ray Societyen
dc.subjectbiliary systemen
dc.subjectMR cholangiopancreatographyen
dc.subjectMRIen
dc.subjectMR techniqueen
dc.subjectT1-weighted imageen
dc.titleValue of adding T1-weighted image to MR cholangiopancreatography for detecting intrahepatic biliary stonesen
dc.typeArticleen
dc.contributor.AlternativeAuthor김영곤-
dc.contributor.AlternativeAuthor김종수-
dc.contributor.AlternativeAuthor이정민-
dc.contributor.AlternativeAuthor고석완-
dc.contributor.AlternativeAuthor정경호-
dc.contributor.AlternativeAuthor이승옥-
dc.contributor.AlternativeAuthor한영민-
dc.contributor.AlternativeAuthor이상용-
dc.identifier.doi10.2214/AJR.05.0266-
Appears in Collections:
College of Medicine/School of Medicine (의과대학/대학원)Radiology (영상의학전공)Journal Papers (저널논문_영상의학전공)
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