Abstract #2615

Simultaneous T1- and T2-weighted imaging using RF phase modulated gradient echo imaging

Daiki Tamada¹ and Scott B. Reeder^1,2,3,4,5

¹Radiology, University of Wisconsin-Madison, Madison, WI, United States, ²Medical Physics, University of Wisconsin-Madison, Madison, WI, United States, ³Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, United States, ⁴Medicine, University of Wisconsin-Madison, Madison, WI, United States, ⁵Emergency Medicine, University of Wisconsin-Madison, Madison, WI, United States

A novel method for simultaneous T1 and T2-weighted imaging using RF phase-modulated GRE with small RF phase increments is presented. Configuration theory approach was used to derive an equation for the steady-state GRE signal. The equation reveals that small RF phase increments provide separable T1 and T2-weighted contrast in the real and imaginary components of the signal. Simulation and phantom studies were performed for quantitative analysis of the proposed method. Brain in-vivo imaging was included to show clinical feasibility. The results suggested the proposed method enables faster imaging compared to conventional FSE imaging.

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