Abstract #2576

MR Imaging of tissue near aneurysm clips using short- and zero echo time MR sequences

Marco L.H. Gruwel¹, Peter Latta², Anna Wojna-Pelczar², Stefan Wolfsberger³, and Boguslaw Tomanek⁴

¹Biological Resources Imaging Laboratory, UNSW, Australia, Mark Wainwright Analytical Centre, Sydney, NSW, Australia, ²Central European Institute of Technology, Masaryk University, Brno, Czech Republic, ³Department of Neurosurgery, University of Vienna, Vienna, Austria, ⁴Department of Oncology, Division of Medical Physics, University of Alberta, Edmonton, AB, Canada

Aneurysm clips are used to stop or prevent an aneurysm from bleeding. MRI is an ideal technique to diagnose aneurysms. Unfortunately, treatment assessment by MRI after surgical placement of an aneurysm clip is complicated due to the presence of the metal clip. The clip's high magnetic susceptibility causes severe, orientation dependent, variations in the local magnetic field. Often this results in pronounced MR image distortions including signal voids. The study presented here shows how ultra-short and zero echo time experiments could be used to minimize these artifacts.

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