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PubMed · 1590186

Fat-suppression failure artifacts simulating pathology on frequency-selective fat-suppression MR images of the head and neck.

Y Anzai·R B Lufkin·B A Jabour·W N Hanafee
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Abstract

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.

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ArtifactsBody WaterHumansLipidsMagnetic Resonance ImagingModels, StructuralNasopharynxOrbitJournal Article

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Y Anzai, R B Lufkin, B A Jabour, W N Hanafee. Fat-suppression failure artifacts simulating pathology on frequency-selective fat-suppression MR images of the head and neck.. https://pubmed.ncbi.nlm.nih.gov/1590186/

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