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Abstract #4597

Dynamic Simultaneous T1 and T2* weighted 3D Dual-Echo Imaging with Compressed Sensing: Potential Advancement to Simultaneous DCE and DSC Imaging

Won-Joon Do 1 , Dong-Wook Lee 1 , Paul Kyu Han 1 , Seung Hong Choi 2 , Jong Chul Ye 1 , and Sung-Hong Park 1

1 Department of Bio and Brain Engineering, Korean Advanced Institute of Science and Technology, Daejeon, Korea, 2 Seoul National University Hospital, Seoul, Korea

We proposed and demonstrated a new approach for acquiring 3D T1 and T2* weighted images simultaneously and dynamically using a dual-echo sequence combined with a compressed sensing (CS) reconstruction, k-t FOCUSS. The conflicting aspect of T1 and T2* weighting could be satisfied by using a special K-space sub-sampled reordering scheme. The implemented CS scheme on the dual-echo imaging with downsampling factor of 4 efficiently improved temporal resolution of the 3D dual-echo imaging, confirmed by detection of CSF signal changes. The technique can potentially be applied for simultaneous DCE and DSC imaging, which can significantly improve clinical information and patient comfort.

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