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연세대학교 의과대학 Yonsei Medical Journal Yonsei Medical Journal 제56권 제2호
발행연도
2015.1
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397 - 402 (6page)

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Purpose: Magnetic resonance imaging (MRI) has been used to screen and follow-up spinal dural arteriovenous fistulae (SDAVF). The purpose of this study was to evaluate the association between MRI findings and neurologic function in SDAVF. This study also investigated clinical features and treatment results of SDAVF. Materialsand Methods: A total of 15 consecutive patients who underwent embolizationor surgery for SDAVF were included. We treated seven (60%) patients with embolization and six (40%) with surgery. We analysed clinical features, MRI findings,treatment results, and neurologic function. Neurologic function was measuredby the Aminoff-Logue disability scale (ALS). Results: Patients with longer levels of intramedullary high signal intensity in preoperative T2-weighted images (T2WI) exhibited worse pre- and postoperative ALS scores (r=0.557, p=0.031; r=0.530, p=0.042, Pearson correlation). Preoperative ALS score was significantly correlated with postoperative ALS score (r=0.908, p=0.000, Pearson correlation). The number of levels showing intramedullary high signal intensity in T2WI decreasedsignificantly postoperatively (5.2±3.1 vs. 1.0±1.4, p=0.001, Wilcoxon ranked test). Conclusion: The number of involved levels of high signal intensity in preoperative T2WI is useful for predicting pre- and postoperative neurologic functionin SDAVF.

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