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Abstract #2559

Development of Cerebral Aneurysm Coils with Equivalent Volume Magnetic Susceptibility to Body Tissue That Generate Small Susceptibility Artifacts in MRI

Ryusuke Nakai1, 2, Takashi Azuma3, Tomonobu Kodama1, Hiroshi Tanemura4, Kenichi Hamada5, Hidenori Suzuki4, Waro Taki4, Hiroo Iwata1

1Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan; 2Kokoro Research Center, Kyoto University, Kyoto, Japan; 3National Institute of Information and Communications Technology, Suita, Osaka, Japan; 4Department of Neurosurgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan; 5Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan

To remedy susceptibility artifact of conventional aneurysm coils, we developed aneurysm coils made of a gold-platinum alloy. In this study, tensile strength and breaking strength of the new Au-Pt aneurysm coil were approximately equivalent to those of the conventional Pt-W coil. The MRI compatibility of the Au-Pt aneurysm coil was confirmed. These results of MRI artifact evaluation show that use of the Au-Pt coil results in a smaller susceptibility artifact than that obtained with the Pt-W coil, and suggest that the Au-Pt coil may allow a more precise observation of the status of a cerebral aneurysm embolus using MRI.