title: Hepatic arterial phase MR imaging with automated bolus-detection three-dimensional fast gradient-recalled-echo sequence: comparison with test-bolus method.
abstract: Sixty-two patients underwent magnetic resonance (MR) imaging of the liver with the automated contrast material bolus-detection technique. Arterial phase MR images were assessed quantitatively and qualitatively. In 23 patients, a test bolus of contrast material was injected intravenously before dynamic MR imaging. There was good correlation and agreement between delay times estimated with both timing methods. Eighty-three percent of arterial phase images obtained with automated contrast material bolus detection were optimal. There was good correlation and agreement between delay times estimated with both timing methods. Optimal hepatic arterial phase MR images can be obtained routinely with automated detection of a contrast material bolus.
authors.affiliation: Department of Radiology, University of Michigan Health System, 1500 E Medical Center Dr, UH B2B311-MRI, Ann Arbor, MI 48109-0030, USA. hhussain@umich.edu
authors.forename: Hero K
authors.initials: HK
authors.lastname: Hussain
authors.forename: Frank J
authors.initials: FJ
authors.lastname: Londy
authors.forename: Isaac R
authors.initials: IR
authors.lastname: Francis
authors.forename: Hanh V
authors.initials: HV
authors.lastname: Nghiem
authors.forename: William J
authors.initials: WJ
authors.lastname: Weadock
authors.forename: Achamyeleh
authors.initials: A
authors.lastname: Gebremariam
authors.forename: Thomas L
authors.initials: TL
authors.lastname: Chenevert
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003287:Contrast Media / Q000008:administration & dosage*; D003937:Diagnosis, Differential; D005260:Female; D019786:Gadolinium DTPA / Q000008:administration & dosage*; D006499:Hepatic Artery; D006801:Humans; D021621:Imaging, Three-Dimensional; D008103:Liver Cirrhosis / Q000150:complications; D008113:Liver Neoplasms / Q000150:complications / Q000175:diagnosis*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged
chemical_list: D003287:Contrast Media; D019786:Gadolinium DTPA