Brett S. Talbot MD, Presenter: Nothing to Disclose

Eric P. Weinberg MD, Abstract Co-Author: Nothing to Disclose

The purpose of this educational exhibit is to: 1) Provide an overview of current metal suppression sequences, including a discussion of key concepts in the associated MR physics. 2) Demonstrate an extensive series of cases where metal suppression plays a key role in the diagnosis of total arthroplasty complications. 3) Place emphasis on specific findings in total knee and total hip arthroplasty on metal-suppressed MR imaging.

-Basic approaches to metal suppression such as metal artifact reduction sequence (MARS). -Discussion of more contemporary approaches including WARP (MARS with view angle tilting - VAT), SEMAC, and MAVRIC. -MR physics discussion including limitations (inability to perform fat saturation, possibility of increased imaging time). -Field strength comparison including degrees of susceptibility artifact at 1.5 and 3.0 T. Specific complications to be discussed include: Metallosis Particle Disease Infection (acute and chronic) Loosening Tendon injury Muscle injury  

http://abstract.rsna.org/uploads/2014/14015257/14015257_xw9k.pdf

Talbot, B, Weinberg, E, Maneuvering Around Metal: Total Joint Arthroplasy Imaging and MR Metal Suppression Sequences.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14015257.html