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.