TY - JOUR 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. SP - 879 LP - 884 VL - 13 IS - 3 AU - Y Anzai AU - R B Lufkin AU - B A Jabour AU - W N Hanafee Y1 - 1992/05/01 UR - http://www.ajnr.org/content/13/3/879.abstract N2 - 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. ER -