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Surveillance of intracranial aneurysms treated with detachable coils: a comparison of MRA techniques

  • Diagnostic Neuroradiology
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Abstract

Two MRA techniques were evaluated for the follow-up of coiled intracranial aneurysms. Twenty-nine coiled aneurysms were evaluated for a total of 36 follow-up assessments using 3D time-of flight MRA (TOF MRA), an auto-triggered elliptic–centric-ordered three-dimensional gadolinium-enhanced MR angiogram (ATECO MRA), as well as a selective digital subtraction angiography (DSA), which served as the “gold standard”. Confident visualization was seen in 36 (100%) of ATECO MRAs and in 32 (89%) of the TOF MRAs. Eleven residual aneurysm components (RACs) greater than 2 mm were described on DSA. Of these, nine were seen on ATECO MRA (sensitivity of 81% and specificity of 88%) and four were seen on TOF MRA (sensitivity of 40% and specificity of 90%). The two RACs not seen on ATECO MRA both measured 3 mm. The six RACs not seen on TOF MRA measured 3, 4 and 5 mm. ATECO MRA provides a non-invasive reliable angiogram for the surveillance of coiled aneurysms and is superior to TOF MRA for this purpose.

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Authors and Affiliations

  1. Division of Neuroradiology, Department of Medical Imaging, Toronto Western Hospital, University of Toronto, Fell Pavilion 3-404, 399 Bathurst Street, Toronto, Ontario, Canada, M5T 2S8

    Richard I. Farb, Shudeshna Nag, Robert A. Willinsky & Karel G. terBrugge

  2. Division of Neuroradiology, Department of Medical Imaging, Foothills Medical Centre, University of Calgary, Calgary, Alberta, Canada

    James N. Scott

  3. Division of Neuroradiology, Department of Medical Imaging, St. Michael’s Hospital, University of Toronto, Toronto, Ontario, Canada

    Thomas R. Marotta & Walter J. Montanera

  4. Department of Medicine, University Health Network, University of Toronto, Toronto, Ontario, Canada

    George Tomlinson

Authors
  1. Richard I. Farb
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  2. Shudeshna Nag
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  3. James N. Scott
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  4. Robert A. Willinsky
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  5. Thomas R. Marotta
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  6. Walter J. Montanera
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  7. George Tomlinson
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  8. Karel G. terBrugge
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Correspondence to Richard I. Farb.

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Farb, R.I., Nag, S., Scott, J.N. et al. Surveillance of intracranial aneurysms treated with detachable coils: a comparison of MRA techniques. Neuroradiology 47, 507–515 (2005). https://doi.org/10.1007/s00234-005-1375-7

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  • DOI: https://doi.org/10.1007/s00234-005-1375-7

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