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Abstract #3563

Qualitative and Quantitative Comparison of 2D Gradient Recalled Echo and Rapid 2D Gradient Recalled Echo Magnetic Resonance Elastography

Ely R Felker1, Steven S Raman1, Bradley D Bolster2, Holden Wu1, Kyung Sung1, Ning Jin2, Brenda J Brown1, and David S Lu1

1UCLA, Los Angeles, CA, United States, 2Siemens Healthcare, United States

Conventional GRE-based MR elastography requires a breath hold of approximately 18 seconds per slice, which is difficult for some patients. We compared a rapid GRE-based sequence (9 second breath hold) to conventional GRE in terms of quantitative liver stiffness (LS) measurement and image quality score (IQS), based on wave propagation and confidence mask coverage, determined by two independent radiologists. The two sequences were equivalent in terms of LS measurement, but the rapid GRE sequence had significantly higher IQS for both readers. Rapid GRE-based MR elastography may be an improved alternative to GRE in patients with limited breath hold capacity.

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