Abstract #3195

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

Masatoshi Hori¹, Nicoline F. Post^1,2, 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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