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Published online before print November 22, 2005, 10.1148/radiol.2381041532
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(Radiology 2005;238:280-291.)
© RSNA, 2005

Technical Developments

Atherosclerotic Disease: Whole-Body Cardiovascular Imaging with MR System with 32 Receiver Channels and Total-Body Surface Coil Technology—Initial Clinical Results1

Michael Fenchel, MD, Albertus M. Scheule, MD, Norbert I. Stauder, MD, Ulrich Kramer, MD, Katrin Tomaschko, RT, Thomas Nägele, MD, Christiane Bretschneider, Heinz-Peter Schlemmer, MD, Claus D. Claussen, MD and Stephan Miller, MD

1 From the Departments of Diagnostic Radiology (M.F., N.I.S., U.K., K.T., C.B., H.P.S., C.D.C., S.M.), Cardiovascular Surgery (A.M.S.), and Neuroradiology (T.N.), Eberhard-Karls-University, Hoppe-Seyler-Strasse 3, 72076 Tuebingen, Germany. Received September 10, 2004; revision requested November 18; revision received January 20, 2005; final version accepted February 21. Address correspondence to M.F. (e-mail: michael.fenchel{at}med.uni-tuebingen.de).

In this prospective study, the feasibility of a comprehensive cardiovascular imaging protocol with a dedicated whole-body 1.5-T magnetic resonance (MR) imager with 32 receiver channels in 34 patients with peripheral arterial occlusive disease was evaluated. Informed consent and institutional review board approval were obtained. Three-dimensional MR angiographic data sets were acquired with adapted injection protocol. Cardiac functional imaging and delayed-enhancement imaging were performed, as were fluid-attenuated inversion-recovery imaging of the brain and time-of-flight MR angiography of the intracranial blood vessels. Sensitivity and specificity for depiction of significant vascular stenosis (> 70%) were 96%, with conventional digital subtraction angiography as the standard. Substantial microangiopathic tissue alterations (n = 4) and/or cerebral infarction (n = 4) were diagnosed in seven patients. In seven patients, subendocardial or transmural delayed enhancement was detected in corresponding regions, indicating prior myocardial infarction. Previously unknown findings diagnosed with MR imaging required midterm follow-up or therapy in 24 patients, whereas change of therapy or immediate treatment was necessary in three. For patients suspected of having systemic atherosclerotic disease, comprehensive risk assessment is feasible within 30 minutes.

© RSNA, 2005




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