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Abstract #4603

Comparison of Accelerated MAVRIC-SL with Robust-PCA and Conventional MAVRIC-SL in Evaluation of Symptomatic Total Hip Arthroplasties

Zoe Doyle1, Daehyun Yoon1, Philip Kenneth Lee1, Brian Hargreaves1, Christopher Beaulieu1, and Kathryn Stevens1

1Stanford University, Stanford, CA, United States

The substantial reduction of off-resonance artifacts near metal by multi-spectral imaging sequences facilitates the postoperative use of MRI to evaluate total hip arthroplasty patients, but its long scan time can be difficult for patients to tolerate. A novel MAVRIC-SL method using robust principal component analysis (RPCA) recently showed 2.6-fold reduced scan time with comparable artifact suppression. In this study we compare a conventional MAVRIC-SL method with the RPCA-accelerated MAVRIC-SL method in 36 total hip arthroplasty cases. Our data demonstrate nearly equivalent clinical sensitivity of the RPCA MAVRIC-SL method to the conventional method with a mild loss of spatial resolution.

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