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Abstract #4572

How to Reduce So-Called Ringing Artifacts in Primovist-Enhanced MR Imaging

Akihiro Tanimoto1, Nobuya Higuchi2, Akihisa Ueno2, Shigeo Okuda2

1Department of Diagnostic Radiology, School of Medicine, Keio University , Tokyo, Japan; 2Department of Diagnostic Radiology, School of Medicine, Keio University, Tokyo, Japan

So-called gringing artifactsh are often associated with Primovist-enhanced dynamic MR imaging, aggravating the diagnosis for focal hepatic lesions. To analyze the cause of this phenomenon, various scan and data acquisition parameters were tested using a newly created simulation software on the personal PC. The simulation study revealed that square matrices, short scanning time, slow infusion rate, and sequential view ordering were effective measures to reduce the artifacts. These results were confirmed in the clinical practice of Primovist-enhanced MR imaging.