Magnetic resonance imaging (MRI) at a field strength of 3 T has become more and more
frequently used in recent years. In an increasing number of radiological sites, 3-T
MRI now starts to play the same role for clinical imaging that was occupied by 1.5-T
systems in the past. Because of physical limitations related to the higher field strength
and because of protocols transferred from 1.5-T MRI that are not yet fully optimized
for 3 T, radiologists and technicians working at these systems are relatively often
confronted with image artifacts related to 3-T MRI. The purpose of this review article
is to present the most relevant artifacts that arise in 3-T MRI, to provide some physical
background on the formation of artifacts, and to suggest strategies to reduce or avoid
these artifacts. The discussed artifacts are classified and ordered according to the
physical mechanism or property of the MRI system responsible for their occurrence:
artifacts caused by B0 inhomogeneity and susceptibility effects, B1 inhomogeneity and wavelength effects, chemical-shift effects, blood flow and magnetohydrodynamics,
and artifacts related to signal-to-noise ratio.
To read this article in full you will need to make a payment
Purchase one-time access:
Academic & Personal: 24 hour online accessCorporate R&D Professionals: 24 hour online accessOne-time access price info
- For academic or personal research use, select 'Academic and Personal'
- For corporate R&D use, select 'Corporate R&D Professionals'
Subscribe:
Subscribe to Clinical ImagingAlready a print subscriber? Claim online access
Already an online subscriber? Sign in
Register: Create an account
Institutional Access: Sign in to ScienceDirect
Article info
Identification
Copyright
© 2008 Published by Elsevier Inc.
