Optimizing cardiac MR imaging: practical remedies for artifacts.

Published

Journal Article

With ongoing technical advances in magnetic resonance (MR) imaging, the clinical demand for cardiac MR evaluations has been increasing. Cardiac MR imaging techniques have evolved from traditional spin-echo sequences to breath-hold spoiled gradient-echo and balanced steady-state free precession sequences. The most recently developed techniques allow evaluation of myocardial function, perfusion, and viability; coronary angiography; flow quantification; and standard morphologic assessments. However, even with the most sophisticated acquisition techniques, artifacts commonly occur at cardiac MR imaging. Knowledge of the origin, imaging appearance, and significance of these artifacts is essential to avoid misinterpreting them as true lesions. Some artifacts are caused by simple errors in positioning of the patient, coil, or electrocardiographic leads; radiofrequency interference from nearby electronic equipment; or metallic objects within the magnetic field. Others are directly related to a specific MR imaging sequence or technique. Accelerated imaging techniques such as parallel imaging, which are used to shorten acquisition and breath-hold times in cardiac evaluations, are particularly vulnerable to artifacts. If an artifact severely degrades image quality, the acquisition should be repeated with appropriate adjustments to decrease or eliminate the problem.

Full Text

Duke Authors

Cited Authors

  • Saremi, F; Grizzard, JD; Kim, RJ

Published Date

  • July 2008

Published In

Volume / Issue

  • 28 / 4

Start / End Page

  • 1161 - 1187

PubMed ID

  • 18635635

Pubmed Central ID

  • 18635635

Electronic International Standard Serial Number (EISSN)

  • 1527-1323

Digital Object Identifier (DOI)

  • 10.1148/rg.284065718

Language

  • eng

Conference Location

  • United States