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Acute Ischemic Stroke pp 115–137Cite as

Conventional MRI and MR Angiography of Stroke

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6.2.9 Conclusion

In the setting of acute stroke, MRA is useful for determining the severity of stenosis, vascular occlusion, and collateral flow. CE MRA and 3D TOF techniques have relatively high sensitivity and specificity in differentiating surgical from nonsurgical carotid stenoses. Three-dimensional TOF MRA is quite sensitive and specific for the evaluation of intracranial proximal stenoses and occlusions. Two-dimensional PC MRA is useful for determining collateral flow patterns in the circle of Willis. MRA is also useful in the determination of stroke etiologies such as dissection, fibromuscular dysplasia, vasculitis, and moya moya. Currently, MRA is relatively insensitive to the detection of stenoses in distal intracranial vessels but this detection will improve with new MR hardware and software.

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Author information

Authors and Affiliations

  1. Neuroradiology Division, Massachusetts General Hospital and Harvard Medical School, Boston, Mass., USA

    David Vu & R. Gilberto González

  2. Neuroradiology, Massachusetts General Hospital, GRB 285, Fruit Street, Boston, MA, 02114-2696

    Pamela W. Schaefer

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  1. David Vu
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  2. R. Gilberto González
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  3. Pamela W. Schaefer
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Editor information

Editors and Affiliations

  1. Neuroradiology Division, Massachusetts General Hospital and Harvard Medical School, Boston, Mass., USA

    R. Gilberto González  & Michael H. Lev  & 

  2. Interventional Neuroradiology and Endovascular Neurosugery Service, Massachusetts General Hospital Harvard Medical School, Boston, Mass., USA

    Joshua A. Hirsch

  3. Acute Stroke Service, Massachusetts General Hospital, Fruit Street, Boston, MA, 02114, USA

    W.J. Koroshetz

  4. Neuroradiology, Massachusetts General Hospital, GRB 285, Fruit Street, Boston, MA, 02114-2696

    Pamela W. Schaefer

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© 2006 Springer-Verlag Berlin Heidelberg

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Vu, D., González, R.G., Schaefer, P.W. (2006). Conventional MRI and MR Angiography of Stroke. In: González, R.G., Hirsch, J.A., Koroshetz, W., Lev, M.H., Schaefer, P.W. (eds) Acute Ischemic Stroke. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-30810-5_6

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  • DOI: https://doi.org/10.1007/3-540-30810-5_6

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