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American Journal of Neuroradiology 26:848-853, April 2005
© 2005 American Society of Neuroradiology

Technical Note
BRAIN

MR Angiographic Evaluation of Platinum Coil Packs at 1.5T and 3T: An In Vitro Assessment of Artifact Production: Technical Note

Matthew T. Walkerb, Jerome Tsaia, Todd Parishc, Brian Tzunga, Ali Shaibanib, Elizabeth Krupinskid and Eric J. Russellb

a Feinberg School of Medicine of Northwestern University, Northwestern University, Evanston, IL
b Department of Radiology, Feinberg School of Medicine of Northwestern University, Northwestern University, Evanston, IL
c Department of Biomedical Engineering, Northwestern University, Evanston, IL
d Department of Radiology, University of Arizona, Tuscon, AZ

Address correspondence to Matthew T. Walker, MD, Department of Radiology, Feinberg School of Medicine of Northwestern University, 676 North St. Clair Street, Suite 1400, Chicago, IL 60611

Summary: Susceptibility artifact from platinum coil packs impairs the visibility of perianeurysmal soft tissues at conventional 3D time-of-flight MR angiography. These artifacts limit the evaluation for residual-recurrent aneurysm and parent vessel stenosis. Reducing the echo time can decrease the artifact and improve perianeurysmal visualization. The purpose of this study was to assess quantitatively the effect of decreasing the echo time on artifact production at different field strengths and coil pack densities.




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Copyright © 2010 by the American Society of Neuroradiology. Print ISSN: 0195-6108 Online ISSN: 1936-959X