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.