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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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