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Abstract #3195

IDEAL-IQ MR Imaging at 3 T for the Quantification of Fat: A Phantom Study

Masatoshi Hori1, Nicoline F. Post1,2, Hiromitsu Onishi1, Hiroyuki Tarewaki3, Aliou A. Dia1, Takashi Ota1, Paul E. Sijens2, and Noriyuki Tomiyama1

1Diagnostic and Interventional Radiology, Osaka University Graduate School of Medicine, Suita, Japan, 2University of Groningen, Groningen, Netherlands, 3Radiology, Osaka University Hospital, Suita, Japan

The purpose of this study was to evaluate the accuracy of fat quantification and the effects of iron on the measurement in IDEAL-IQ MR imaging at 3 Tesla by comparing the results of MRS using a fat-water-iron phantom. A gel phantom comprised of twenty-eight vials containing various proportions of fat and iron was constructed. Fat fraction and R2* value were measured by IDEAL-IQ and MRS on a 3-T scanner. This study showed that IDEAL-IQ yielded an accurate quantification of fat content with a smaller degree of error due to susceptibility effects of iron compared to MRS at 3 Tesla.

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