Abstract #0575

A Free-breathing water/fat separation and T1, T2 quantification method using dual TR FISP in abdomen

Dongyeob Han¹, Min-Oh Kim¹, Honpyo Lee¹, Taehwa Hong¹, and Dong-Hyun Kim¹

¹Yonsei University, Seoul, Korea, Republic of

A simultaneous, free-breathing water/fat separation and T1, T2 quantification method was proposed. Dual TR (in-phase and out-phase TR) and varying sinusoidal flip angle was used with FISP acquisition. For motion robustness, random rotating golden angle trajectories were applied. T1, T2 and Δφ_fat of fat were pre-determined using the fat dominant region mask, then water/fat signal combined dictionary was generated. The results show that the water/fraction maps from the proposed method were in good agreement with conventional breath-hold results. Furthermore, measured T1, T2 values were in good agreement with the values from the previous research.

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