title: The value of drip infusion cholangiography using multidetector-row helical CT in patients with choledocholithiasis.
abstract: The purposes of this study were to investigate the feasibility of drip infusion cholangiography computed tomography (CTCh) for choledocholithiasis and to compare the detection of the stone on CTCh with that of MR cholangiopancreatography (MRCP). CTCh examinations were performed after infusion of intravenous biliary contrast material (iotroxic acid meglumine, 100 ml) for patients with suspected biliary diseases and were reconstructed to maximum intensity projection (MIP) and multiplanar reformation (MPR). Of 432 patients who underwent CTCh, we identified 15 who underwent surgery or cholangioscopic removal for choledocholithiasis and 32 patients who underwent cholecystectomy due to cholecystolithiasis. Their MRCP images were compared with the CTCh images. The sensitivity and specificity of CTCh for detecting choledochal stones were 87% and 96% whereas those of MRCP were 80% and 88%. The sensitivity and specificity of CTCh for detecting gallstones were 78% and 100% whereas those of MRCP were 94% and 88%. CTCh allowed high sensitivity and specificity for detecting choledochal stones but diminished the detection for cholecystolithiasis compared with MRCP.
authors.affiliation: Department of Radiology, Tokyo Medical Center, 2-5-1 Higashigaoka Meguro-ku, 152-0021, Tokyo, Japan. mokada@g06.itscom.net
authors.forename: Masahiro
authors.initials: M
authors.lastname: Okada
authors.forename: Jun-Ichi
authors.initials: J
authors.lastname: Fukada
authors.forename: Kazuhito
authors.initials: K
authors.lastname: Toya
authors.forename: Reiko
authors.initials: R
authors.lastname: Ito
authors.forename: Toshio
authors.initials: T
authors.lastname: Ohashi
authors.forename: Atsunori
authors.initials: A
authors.lastname: Yorozu
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001649:Bile Duct Diseases / Q000000981:diagnostic imaging; D001663:Bilirubin / Q000097:blood; D015415:Biomarkers / Q000097:blood; D002758:Cholangiography / Q000379:methods*; D049448:Cholangiopancreatography, Magnetic Resonance; D002763:Cholecystectomy; D042883:Choledocholithiasis / Q000097:blood / Q000000981:diagnostic imaging* / Q000601:surgery; D003287:Contrast Media; D003549:Cystic Duct / Q000000981:diagnostic imaging; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D007262:Infusions, Intravenous; D007458:Iodipamide / Q000031:analogs & derivatives; D020347:Lithiasis / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D012680:Sensitivity and Specificity; D036542:Tomography, Spiral Computed / Q000379:methods
chemical_list: D015415:Biomarkers; D003287:Contrast Media; C012386:meglumine iotroxinate; D001663:Bilirubin; D007458:Iodipamide