Abstract #4608

High Acceleration Three Dimensional T1-weighted Dual Echo Dixon Imaging using Compressed Sensing-SENSE: Comparison of Image Quality and Solid Lesion Detectability with the Standard T1-Weighted Sequence

Ju Gang Nam¹, Jeong Min Lee², Sang Min Lee³, Hyo-Jin Kang², Eun Sun Lee⁴, Bo Yun Hur⁵, Jeong Hee Yoon², EunJu Kim⁶, and Mariya Doneva⁷

¹Seoul National University Hostpital, Seoul, Republic of Korea, ²Seoul National University Hospital, Seoul, Republic of Korea, ³Hallym University Sacred Heart Hospital, Gyeonggi-do, Republic of Korea, ⁴Chung-Ang University Hospital, Seoul, Republic of Korea, ⁵National Cancer Center, Gyeonggi-do, Republic of Korea, ⁶Philips Healthcare Korea, Seoul, Republic of Korea, ⁷Philips Research Hamburg, Hamburg, Germany

A total of 163 consecutive patients underwent gadoxetic acid-enhanced liver MRI at 3T with two HBP protocols using the standard mDIxon-3D-GRE technique with sensitivity-encoding method (SENSE; acceleration factor (AF): 2.8, standard mDixon-GRE) and a high acceleration mDIxon-3D GRE technique using the combined compressed sensing (CS)-SENSE technique (CS-SENSE mDixon-GRE). The consensus reading revealed no significant difference in overall image quality. CS-SENSE mDixon-GRE showed higher image noise, but less motion artifact and overall artifact levels. In terms of lesion detection, reader-averaged JAFROC figures-of-merit showed non-inferior performance of CS-SENSE mDixon-GRE over standard mDixon-GRE was confirmed (JAFROC figure-of-merits difference: 0.064 [-0.012, 0.081])

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