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AJNR Awards, New Junior Editors, and more. Read the latest AJNR updates

Research ArticleSpine Imaging and Spine Image-Guided Interventions

First-Pass Contrast-Enhanced MR Angiography in Evaluation of Treated Spinal Arteriovenous Fistulas: Is Catheter Angiography Necessary?

S. Mathur, S.P. Symons, T.J. Huynh, T.R. Marotta, R.I. Aviv and A. Bharatha
American Journal of Neuroradiology January 2017, 38 (1) 200-205; DOI: https://doi.org/10.3174/ajnr.A4971
S. Mathur
aFrom the Division of Diagnostic and Interventional Neuroradiology, Department of Medical Imaging (S.M., T.J.H., T.R.M., A.B.), St. Michael's Hospital, University of Toronto, Toronto, Ontario, Canada
bDivision of Neuroradiology, Department of Medical Imaging (S.M., T.J.H., R.I.A., S.P.S.)
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S.P. Symons
bDivision of Neuroradiology, Department of Medical Imaging (S.M., T.J.H., R.I.A., S.P.S.)
cDepartment of Otolaryngology–Head and Neck Surgery (S.P.S.), Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada.
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T.J. Huynh
aFrom the Division of Diagnostic and Interventional Neuroradiology, Department of Medical Imaging (S.M., T.J.H., T.R.M., A.B.), St. Michael's Hospital, University of Toronto, Toronto, Ontario, Canada
bDivision of Neuroradiology, Department of Medical Imaging (S.M., T.J.H., R.I.A., S.P.S.)
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T.R. Marotta
aFrom the Division of Diagnostic and Interventional Neuroradiology, Department of Medical Imaging (S.M., T.J.H., T.R.M., A.B.), St. Michael's Hospital, University of Toronto, Toronto, Ontario, Canada
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R.I. Aviv
bDivision of Neuroradiology, Department of Medical Imaging (S.M., T.J.H., R.I.A., S.P.S.)
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A. Bharatha
aFrom the Division of Diagnostic and Interventional Neuroradiology, Department of Medical Imaging (S.M., T.J.H., T.R.M., A.B.), St. Michael's Hospital, University of Toronto, Toronto, Ontario, Canada
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Abstract

BACKGROUND AND PURPOSE: Catheter angiography is typically used for follow-up of treated spinal AVFs. The purpose of this study was to determine the diagnostic performance and utility of first-pass contrast-enhanced MRA in the posttreatment evaluation of spinal AVFs compared with DSA.

MATERIALS AND METHODS: A retrospective review was performed of all patients at our tertiary referral hospital (from January 2000 to April 2015) who underwent spine MR imaging, first-pass contrast-enhanced MRA, and DSA after surgical and/or endovascular treatment of a spinal AVF. Presence of recurrent or residual fistula on MRA, including vertebral level of the recurrent/residual fistula, was evaluated by 2 experienced neuroradiologists blinded to DSA findings. Posttreatment conventional MR imaging findings were also evaluated, including presence of intramedullary T2 hyperintensity, perimedullary serpentine flow voids, and cord enhancement. The performance of MRA and MR imaging findings for diagnosis of recurrent/residual fistula was determined by using DSA as the criterion standard.

RESULTS: In total, 28 posttreatment paired MR imaging/MRA and DSA studies were evaluated in 22 patients with prior spinal AVF and 1 patient with intracranial AVF with prior cervical perimedullary venous drainage. Six image sets of 5 patients demonstrated recurrent/residual disease at DSA. MRA correctly identified all cases with recurrent/residual disease with 1 false-positive (sensitivity, 100%; specificity 95%; P < .001), with correct localization in all cases without interobserver disagreement. Conventional MR imaging parameters were not significantly associated with recurrent/residual spinal AVF.

CONCLUSIONS: First-pass MRA demonstrates high sensitivity and specificity for identifying recurrent/residual spinal AVFs and may potentially substitute for DSA in the posttreatment follow-up of patients with spinal AVFs.

ABBREVIATION:

SAVF
spinal AVF
  • © 2017 by American Journal of Neuroradiology
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American Journal of Neuroradiology: 38 (1)
American Journal of Neuroradiology
Vol. 38, Issue 1
1 Jan 2017
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Cite this article
S. Mathur, S.P. Symons, T.J. Huynh, T.R. Marotta, R.I. Aviv, A. Bharatha
First-Pass Contrast-Enhanced MR Angiography in Evaluation of Treated Spinal Arteriovenous Fistulas: Is Catheter Angiography Necessary?
American Journal of Neuroradiology Jan 2017, 38 (1) 200-205; DOI: 10.3174/ajnr.A4971

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First-Pass Contrast-Enhanced MR Angiography in Evaluation of Treated Spinal Arteriovenous Fistulas: Is Catheter Angiography Necessary?
S. Mathur, S.P. Symons, T.J. Huynh, T.R. Marotta, R.I. Aviv, A. Bharatha
American Journal of Neuroradiology Jan 2017, 38 (1) 200-205; DOI: 10.3174/ajnr.A4971
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