title: [Elimination of artifacts in MRCP: technical consideration].
abstract: Artifacts of MR cholangiopancreatography (MRCP) include fluid-filled gastrointestinal tracts, respiratory motion artifacts, spasm of Oddi's sphincter, vascular compression of bile ducts, overlapping of various anatomical structures and bright signal of surrounding fatty tissue. In this article, various technical considerations to eliminate these artifacts were described for the better imaging analysis of MRCP. The use of high-concentration ferric ammonium citrate (Ferriseltz) is recommended to reduce bright signal of fluid-filled gastrointestinal tracts. In case of long breathhold sequences, O2-inhalation study is useful to eliminate respiratory motion artifacts. Careful attention should be paid to the spasm of Oddi's sphincter and the vascular compression of bile ducts to avoid erroneous interpretation of MRCP findings.
authors.affiliation: Dept. of Radiology, Japanese Red Cross Medical Center.
authors.forename: K
authors.initials: K
authors.lastname: Ohgi
authors.forename: K
authors.initials: K
authors.lastname: Satoh
authors.forename: S
authors.initials: S
authors.lastname: Tanaka
authors.forename: T
authors.initials: T
authors.lastname: Higami
authors.forename: T
authors.initials: T
authors.lastname: Furukawa
authors.forename: H
authors.initials: H
authors.lastname: Akiyama
authors.forename: S
authors.initials: S
authors.lastname: Kimura
authors.forename: K
authors.initials: K
authors.lastname: Uehara
authors.forename: K
authors.initials: K
authors.lastname: Murata
authors.forename: M
authors.initials: M
authors.lastname: Higashi
mesh_terms: D001158:Arteries / Q000502:physiology; D016477:Artifacts; D003287:Contrast Media; D004068:Digestive System Physiological Phenomena; D005290:Ferric Compounds; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D009068:Movement; D010528:Peristalsis / Q000502:physiology; D000644:Quaternary Ammonium Compounds; D015656:Respiratory Mechanics / Q000502:physiology; D009803:Sphincter of Oddi / Q000502:physiology
chemical_list: D003287:Contrast Media; D005290:Ferric Compounds; D000644:Quaternary Ammonium Compounds; C013531:ferric ammonium citrate