RT Journal Article
SR Electronic
T1 Fat-suppression failure artifacts simulating pathology on frequency-selective fat-suppression MR images of the head and neck.
JF American Journal of Neuroradiology
JO Am. J. Neuroradiol.
FD American Society of Neuroradiology
SP 879
OP 884
VO 13
IS 3
A1 Anzai, Y
A1 Lufkin, R B
A1 Jabour, B A
A1 Hanafee, W N
YR 1992
UL http://www.ajnr.org/content/13/3/879.abstract
AB PURPOSE To describe fat-suppression failure artifacts and to caution against their misinterpretation.METHOD Magnetic-susceptibility artifacts were studied in a phantom model and the results were compared to MR images obtained in clinical cases.FINDINGS Artifacts manifested themselves as regions of focal fat-suppression failure and appeared as bright signals without geometric distortions at magnetic-susceptibility interfaces along the static field (z) direction. The location and extent of these artifacts were independent of either frequency or phase-encoding direction and are different from those observed in gradient-echo images.CONCLUSIONS In representative clinical MR exams, these artifacts were identified in the high nasopharynx and low orbit and should not be misinterpreted as pathology.