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AJNR - American Journal of Neuroradiology

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American Journal of Neuroradiology 27:2118-2121, November-December 2006
© 2006 American Society of Neuroradiology

Technical Note
BRAIN

Contrast-Enhanced MR Angiography at 3T in the Evaluation of Intracranial Aneurysms: A Comparison with Time-of-Flight MR Angiography

K. Nael^a, J.P. Villablanca^a, R. Saleh^a, W. Pope^a, A. Nael^a, G. Laub^b and J.P. Finn^a

^a Department of Radiological Sciences, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, Calif
^b Siemens Medical Solutions, Erlangen, Germany

Please address correspondence to: Kambiz Nael, MD, Department of Radiological Sciences, University of California Los Angeles, 10945 Le Conte Ave, Ste 3371, Los Angeles, CA 90095-7206; e-mail: nkambiz{at}mednet.ucla.edu

SUMMARY: The combination of 3T and parallel-acquisition techniques holds promise for improved performance of contrast-enhanced MR angiography (MRA), in terms of speed, spatial resolution, and coverage. We present a comparison of 2 MRA techniques, including time-of-flight (TOF) and contrast-enhanced MRA, for detection and evaluation of intracranial aneurysms. Our results show that contrast-enhanced MRA with highly accelerated parallel acquisition at 3T does not have the known drawbacks of TOF-MRA techniques, including prolonged acquisition time, spin saturation, and flow-related artifacts, with comparable aneurysm characterization.

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