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Orbital Artifacts on MRI.

Khizar Rana1, Valerie Juniat1, Sandy Patel2

  • 1Department of Ophthalmology & Visual Sciences, South Australian Institute of Ophthalmology, University of Adelaide, North Terrace, South Australia, Australia.

Ophthalmic Plastic and Reconstructive Surgery
|June 8, 2023
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Summary
This summary is machine-generated.

Orbital MRI artifacts, particularly fat-suppression failure, can mimic orbital disease, leading to misdiagnosis. Awareness of these artifacts is crucial for accurate radiology reporting and avoiding unnecessary procedures.

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Area of Science:

  • Radiology
  • Ophthalmology
  • Medical Imaging

Background:

  • Orbital magnetic resonance imaging (MRI) is essential for diagnosing various orbital pathologies.
  • Artifacts in MRI can significantly impact diagnostic accuracy.
  • Misinterpretation of artifacts can lead to incorrect diagnoses and unnecessary interventions.

Purpose of the Study:

  • To describe artifacts on orbital MRI.
  • To highlight instances where artifacts led to incorrect radiology reports.
  • To inform clinicians about potential diagnostic pitfalls in orbital MRI.

Main Methods:

  • Retrospective chart review of patients with artifacts on orbital MRI.
  • Inclusion criteria: artifacts leading to incorrect radiology reports.
  • Data collected: patient demographics, MRI sequences, artifact characteristics, misdiagnoses, and causes.

Main Results:

  • Seven patients (3 male, median age 61) were analyzed.
  • Five artifacts resulted from fat-suppression failure.
  • Four cases were misdiagnosed as inflammatory changes, one as neoplastic infiltration; six artifacts were in the inferior orbit.

Conclusions:

  • Fat-suppression failure artifacts in the inferior orbit can mimic inflammatory or neoplastic orbital disease.
  • These artifacts can lead to misdiagnosis and potentially unnecessary investigations like orbital biopsy.
  • Clinicians must be aware of orbital MRI artifacts to prevent misdiagnosis.