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Abstract #3402

Suppression of Artifacts in Simultaneous 3D T1 and T2*-weighted Dual-Echo Imaging

Won-Joon Do 1 , Seung Hong Choi 2 , Eung Yeop Kim 3 , and Sung-Hong Park 1

1 Korea Advanced Institute of Science and Technology, Daejeon, Korea, 2 Department of Radiology, Seoul National University College of Medicine, Seoul, Korea, 3 Department of Radiology, Gachon University Gil Medical Center, Incheon, Korea

Dual-echo sequence allows us to acquire 3D T1 and T2*-weighted images simultaneously. The conflicting parameter conditions of T1and T2* contrasts can be resolved by echo-specific k-space reordering schemes. However, abrupt changes in scan conditions for the echo-specific k-space reordering can cause ringing artifacts. In this study, we propose a new approach of smooth transition in the regions of abrupt changes, to suppress the artifacts. The ringing artifacts in the echo-specific k-space reordered dual-echo sequence without the smooth transition could be effectively suppressed with the proposed approach and thus the image qualities became closer to those acquired with conventional single-echo sequences.

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