Abstract #1953

Quantitative Susceptibility Mapping of Paramagnetic and Diamagnetic Substances at 3T-MR, 1.5T-MR and CT.

Yasutaka Fushimi¹, Kyoko Takakura¹, Tomohisa Okada², Takuya Hinoda¹, Aki Kido¹, and Kaori Togashi¹

¹Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan, ²Human Brain Research Center, Kyoto University Graduate School of Medicine, Kyoto, Japan

We compared QSM value of paramagnetic and diamagnetic substances at 3T-MR, 1.5T-MR, and CT in this study. Phantoms with different concentration gadoterate meglumine (Gd) and calciumcarbonate (CaCO₃) were created. QSM at 3T and 1.5T and CT imaging were performed for these phantoms. QSM of Gd phantom showed positive susceptibility and QSM of CaCO₃ showed negative susceptibility. QSM demonstrated consistent results in paramagnetic and diamagnetic substances at 3T and 1.5T. QSM and CT values were correlated well.

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