Abstract #0196

Free-breathing Motion-Corrected Liver DWI at 3T with Optimized Fat-suppression Scheme

Zhiyong Chen¹, Zhangli Xing², Enshuang Zheng¹, Mingcong Luo², Caixia Fu³, Guijin Li⁴, Thomas Benkert⁵, Yunjing Xue¹, and Bin Sun¹

¹Radiology, Fujian Medical University Union Hospital, Fuzhou, China, ²Fujian Medical University Union Hospital, Fuzhou, China, ³MR Application Development, Siemens Shenzhen magnetic Resonance Ltd., Shenzhen, China, Shenzhen, China, ⁴MR application, Siemens Healthineers Ltd，Guangzhou，China, Guangzhou, China, ⁵MR Application Predevelopment, Siemens Healthineers AG, Erlangen, Germany, Erlangen, Germany

Synopsis

Keywords: Liver, Diffusion/other diffusion imaging techniques

Motivation: A free-breathing motion-insensitive and high-quality DWI is desired for abdominal DWI in clinical practice.

Goal(s): This study is to propose and evaluate a novel ss-EPI DWI sequence incorporating motion correction , complex averaging , and a combination of a reparametrized sinc fatsat pulse with an optimized water excitation pulse for abdominal DWI.

Approach: Four different DWI sequecnes were performed on volunteers. The overall image qualities and the SNR on the liver papernchyma were evaluated and compared.

Results: The SNRs of the liver and the image qualities were significantly higher with the proposed Free-breathing motion-corrected DWI ( MOCO-DWI ) sequence compared to other EPI DWI sequences.

Impact: The free-breathing MOCO-DWI sequences with complex-averaging and new fat suppression scheme is recommended for high-quality liver DWI in clinical routine.

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