Meeting Banner
Abstract #4215

Highly Accelerated SEMAC for MRI of Arthroplasty Implants: Comparison with optimized TSE and conventional SEMAC

Jan Fritz 1 , Gaurav Thawait 1 , Shadpour Demehri 1 , Shivani Ahlawat 1 , Heiko Meyer 2 , Wesley Gilson 3 , Esther Raithel 2 , and Mathias Nittka 2

1 Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, United States, 2 Healthcare Sector, Siemens AG, Bavaria, Germany, 3 Siemens Healthcare USA, Baltimore, United States

Slice-encoding metal artifact correction (SEMAC) affords powerful metal artifact reduction, but may be considered impractical due to long acquisition times. The inherent sparsity of SEMAC data, however, offers potential for substantial acceleration through the use of pseudo-randomized k-space undersampling and iterative reconstruction. We show the clinical usability of a highly accelerated TSE SEMAC sequence prototype employing incoherent k-space undersampling and iterative reconstruction resulting in shortening of the acquisition time by 50-60% when compared to standard TSE SEMAC sequences and comparable image quality.

This abstract and the presentation materials are available to members only; a login is required.

Join Here