Metal-induced artifacts in MRI. AJR Am J Roentgenol 2011 Sep;197(3):547-55
Date
08/25/2011Pubmed ID
21862795Pubmed Central ID
PMC5562503DOI
10.2214/AJR.11.7364Scopus ID
2-s2.0-80052196443 (requires institutional sign-in at Scopus site) 479 CitationsAbstract
OBJECTIVE: The purpose of this article is to review some of the basic principles of imaging and how metal-induced susceptibility artifacts originate in MR images. We will describe common ways to reduce or modify artifacts using readily available imaging techniques, and we will discuss some advanced methods to correct readout-direction and slice-direction artifacts.
CONCLUSION: The presence of metallic implants in MRI can cause substantial image artifacts, including signal loss, failure of fat suppression, geometric distortion, and bright pile-up artifacts. These cause large resonant frequency changes and failure of many MRI mechanisms. Careful parameter and pulse sequence selections can avoid or reduce artifacts, although more advanced imaging methods offer further imaging improvements.
Author List
Hargreaves BA, Worters PW, Pauly KB, Pauly JM, Koch KM, Gold GEAuthor
Kevin M. Koch PhD Adjunct Professor in the Radiology department at Medical College of WisconsinMESH terms used to index this publication - Major topics in bold
ArtifactsHumans
Image Enhancement
Magnetic Resonance Imaging
Metals
Prostheses and Implants
