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Abstract #4022

Ultra-High-Field Imaging of the Biliary Tract at 7 Tesla: Initial Results of Gd-EOB-DTPA-Enhanced MRCP

Anja Fischer1, 2, Oliver Kraff, 12, Stephan Orzada, 12, Lena C. Schfer, 12, Mark E. Ladd, 12, Lale Umutlu1, 2, Thomas C. Lauenst

1Department of Diagnostic and Interventional Radiology and Neuroradiology, Essen, Germany; 2Erwin L. Hahn Institute for Magnetic Resonance Imaging, University Duisburg-Essen, Essen, Germany

MR imaging of the liver was investigated at 7 Tesla using Gadoxetic acid for depiction of the intra- and extrahepatic biliary tract. A custom-built eight-channel RF transmit/receive body coil and RF shimming were used. In 10 healthy volunteers, dynamic T1-weighted 3D VIBE and 3D FLASH inversion recovery sequences were acquired in the hepatobiliary phase. For comparison, all volunteers underwent a conventional T2-weighted MRCP at 3T. Initial results demonstrate feasibility, showing both benefits and limitations of this technique.

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Keywords

abdomen abdominal acid acquisition acquisitions additional additionally administrated administration ahead allow arrays artifacts assess assessment biliary body bodyweight built central channel clinical coil common consisting contrast coronal currently custom delineation depicted depiction dexter diagnostic disease dorsally dosage duct ducts dynamic elements enabled enhanced equivalent evaluation examination examined excellent feasibility field flash focus functional future gained half hamper haste healthy heavily hepatic homogeneous important improvement included individualized inhomogeneities initial injection institute intensity intra inversion last limitations liver lumen maps mark media medium minutes moderate near noninvasive oliver optimal orientation particular parts patients peripheral placed poor poorer portions position potential presence print protocol qualitative quality quantitative radiology reached receive recovery reflected regard revealed role saturation scale score secreted sector segment segments series settings sinister sliver started strength strong structures studies successfully superiority supine surrounding system tissue tool tract transmit trials triggered ultra underwent upper utilization utilizing ventrally vessels vibe volunteers whole years yielded