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Case series demonstrates CT-like bone contrast MRI improves diagnosis in atlantoaxial rotatory fixation, suggesting reduced radiation exposure.
Case: Three-dimensional atlantoaxial rotatory fixation (AARF) is usually evaluated by computed tomography (CT). This report describes 3 cases of AARF that were diagnosed and treated based on CT-like bone contrast magnetic resonance imaging (CTLBC MRI) findings. Three-dimensional volume rendering CTLBC MRI scans helped with diagnosis and treatment planning. Conclusion: CTLBC MRI can determine the severity of dislocation and C1/C2 facet deformity in AARF and inform the treatment strategy. CTLBC MRI may reduce ionizing radiation exposure in children and merits broader evaluation. Study Design and Level of Evidence: Case series, Level V .
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Kinoshita et al. (2026) studied this question.
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