Search Results - William A. Copen

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  1. 1
    MR Perfusion Imaging in Acute Ischemic Stroke

    MR Perfusion Imaging in Acute Ischemic Stroke by William A. Copen, Pamela W. Schaefer, Ona Wu

    Published 2011
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  2. 2
    Early Experience of Translating pH-Weighted MRI to Image Human Subjects at 3 Tesla

    Early Experience of Translating pH-Weighted MRI to Image Human Subjects at 3 Tesla by Phillip Zhe Sun, Thomas Benner, William A. Copen, A. Gregory Sorensen

    Published 2010
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  3. 3
    Corticospinal Tract Diffusion Abnormalities Early After Stroke Predict Motor Outcome

    Corticospinal Tract Diffusion Abnormalities Early After Stroke Predict Motor Outcome by Benjamin N. Groisser, William A. Copen, Aneesh B. Singhal, K. Hirai, Judith D. Schaechter

    Published 2014
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  4. 4
    In patients with suspected acute stroke, CT perfusion-based cerebral blood flow maps cannot substitute for DWI in measuring the ischemic core

    In patients with suspected acute stroke, CT perfusion-based cerebral blood flow maps cannot substitute for DWI in measuring the ischemic core by William A. Copen, Albert J. Yoo, Natalia S. Rost, Lívia T. Morais, Pamela W. Schaefer, Ramón González, Ona Wu

    Published 2017
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  5. 5
    Improving Door-to-Needle Times

    Improving Door-to-Needle Times by Ilana Ruff, Syed F. Ali, Joshua N. Goldstein, Michael H. Lev, William A. Copen, Joyce McIntyre, Natalia S. Rost, Lee H. Schwamm

    Published 2014
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  6. 6
    Diffusion- and Perfusion-Weighted Imaging in Vasospasm After Subarachnoid Hemorrhage

    Diffusion- and Perfusion-Weighted Imaging in Vasospasm After Subarachnoid Hemorrhage by Guy Rordorf, Walter J. Koroshetz, William A. Copen, Gilberto Gonzalez, Kei Yamada, Pamela W. Schaefer, Lee H. Schwamm, Christopher S. Ogilvy, A. Gregory Sorensen

    Published 1999
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  7. 7
    Combining MRI with NIHSS Thresholds to Predict Outcome in Acute Ischemic Stroke: Value for Patient Selection

    Combining MRI with NIHSS Thresholds to Predict Outcome in Acute Ischemic Stroke: Value for Patient Selection by Pamela W. Schaefer, Benjamin Pulli, William A. Copen, Joshua A Hirsch, T Leslie-Mazwi, Lee H. Schwamm, Ona Wu, R. Gilberto González, Albert J. Yoo

    Published 2014
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  8. 8
    Combining Acute Diffusion-Weighted Imaging and Mean Transmit Time Lesion Volumes With National Institutes of Health Stroke Scale Score Improves the Prediction of Acute Stroke Outcome

    Combining Acute Diffusion-Weighted Imaging and Mean Transmit Time Lesion Volumes With National Institutes of Health Stroke Scale Score Improves the Prediction of Acute Stroke Outco... by Albert J. Yoo, Elizabeth R. Barak, William A. Copen, Shahmir Kamalian, Leila Rezai Gharai, Muhammad A. Pervez, Lee H. Schwamm, Ramón González, Pamela W. Schaefer

    Published 2010
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  9. 9
    Diffusion tensor imaging in acute-to-subacute traumatic brain injury: a longitudinal analysis

    Diffusion tensor imaging in acute-to-subacute traumatic brain injury: a longitudinal analysis by Brian L. Edlow, William A. Copen, Saef Izzy, Khamid Bakhadirov, André van der Kouwe, Mel B. Glenn, Steven M. Greenberg, David M. Greer, Ona Wu

    Published 2016
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  10. 10
    Magnetic Resonance Perfusion-Weighted Imaging of Acute Cerebral Infarction

    Magnetic Resonance Perfusion-Weighted Imaging of Acute Cerebral Infarction by Kei Yamada, Ona Wu, Ramón González, Dirk Bakker, Leif Østergaard, William A. Copen, Robert M. Weisskoff, Bruce R. Rosen, Katsumi Yagi, Tsunehiko Nishimura, A. Gregory Sorensen

    Published 2002
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  11. 11
    Regional Ischemia and Ischemic Injury in Patients With Acute Middle Cerebral Artery Stroke as Defined by Early Diffusion-Weighted and Perfusion-Weighted MRI

    Regional Ischemia and Ischemic Injury in Patients With Acute Middle Cerebral Artery Stroke as Defined by Early Diffusion-Weighted and Perfusion-Weighted MRI by Guy Rordorf, Walter J. Koroshetz, William A. Copen, Steven C. Cramer, Pamela W. Schaefer, Ronald F. Budzik, Lee H. Schwamm, Ferdinando S. Buonanno, A. Gregory Sorensen, Gilberto Gonzalez

    Published 1998
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  12. 12
    Predicting Tissue Outcome in Acute Human Cerebral Ischemia Using Combined Diffusion- and Perfusion-Weighted MR Imaging

    Predicting Tissue Outcome in Acute Human Cerebral Ischemia Using Combined Diffusion- and Perfusion-Weighted MR Imaging by Ona Wu, Walter J. Koroshetz, Leif Østergaard, Ferdinando S. Buonanno, William A. Copen, R. Gilberto González, Guy Rordorf, Bruce R. Rosen, Lee H. Schwamm, Robert M. Weisskoff, A. Gregory Sorensen

    Published 2001
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  13. 13
    Time and Diffusion Lesion Size in Major Anterior Circulation Ischemic Strokes

    Time and Diffusion Lesion Size in Major Anterior Circulation Ischemic Strokes by Reza Hakimelahi, Behroze Vachha, William A. Copen, Giacomo Davide Edoardo Papini, Julian He, Mahmoud M. Higazi, Michael H. Lev, Pamela W. Schaefer, Albert J. Yoo, Lee H. Schwamm, Ramón González

    Published 2014
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  14. 14
    Role of Acute Lesion Topography in Initial Ischemic Stroke Severity and Long-Term Functional Outcomes

    Role of Acute Lesion Topography in Initial Ischemic Stroke Severity and Long-Term Functional Outcomes by Ona Wu, Lisa Cloonan, Steven J. T. Mocking, Mark J.R.J. Bouts, William A. Copen, Pedro Cougo, Kaitlin Fitzpatrick, Allison Kanakis, Pamela W. Schaefer, Jonathan Rosand, Karen L. Furie, Natalia S. Rost

    Published 2015
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  15. 15
    The Massachusetts General Hospital acute stroke imaging algorithm: an experience and evidence based approach

    The Massachusetts General Hospital acute stroke imaging algorithm: an experience and evidence based approach by R. Gilberto González, William A. Copen, Pamela W. Schaefer, Michael H. Lev, Stuart R. Pomerantz, Otto Rapalino, John W. Chen, George J. Hunter, Javier M. Romero, Bradley R. Buchbinder, Mykol Larvie, Joshua A Hirsch, Rajiv Gupta

    Published 2013
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  16. 16
    Intravenous thrombolysis in unwitnessed stroke onset: MR WITNESS trial results

    Intravenous thrombolysis in unwitnessed stroke onset: MR WITNESS trial results by Lee H. Schwamm, Ona Wu, Shlee Song, Lawrence L. Latour, Andria L. Ford, Amie W. Hsia, Alona Muzikansky, Rebecca A. Betensky, Albert J. Yoo, Michael H. Lev, Grégoire Boulouis, Arne Lauer, Pedro Cougo, William A. Copen, Gordon J. Harris, Steven Warach

    Published 2018
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  17. 17
    Diffuse microvascular dysfunction and loss of white matter integrity predict poor outcomes in patients with acute ischemic stroke

    Diffuse microvascular dysfunction and loss of white matter integrity predict poor outcomes in patients with acute ischemic stroke by Natalia S. Rost, Pedro Cougo, Svetlana Lorenzano, Hua Li, Lisa Cloonan, Mark J.R.J. Bouts, Arne Lauer, Mark R. Etherton, Hasan Hüseyin Karadeli, Patricia L. Musolino, William A. Copen, Ken Arai, Eng H. Lo, Steve K. Feske, Karen L. Furie, Ona Wu

    Published 2017
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  18. 18
    Ensemble of Convolutional Neural Networks Improves Automated Segmentation of Acute Ischemic Lesions Using Multiparametric Diffusion-Weighted MRI

    Ensemble of Convolutional Neural Networks Improves Automated Segmentation of Acute Ischemic Lesions Using Multiparametric Diffusion-Weighted MRI by Stefan Winzeck, Steven J. T. Mocking, Raquel Bezerra, Mark J.R.J. Bouts, Elissa C. McIntosh, Izzuddin Diwan, Priya Garg, Aurauma Chutinet, W. Taylor Kimberly, William A. Copen, Pamela W. Schaefer, Hakan Ay, Aneesh B. Singhal, Konstantinos Kamnitsas, Ben Glocker, A. Gregory Sorensen, Ona Wu

    Published 2019
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  19. 19
    Acute Stroke Imaging Research Roadmap II

    Acute Stroke Imaging Research Roadmap II by Max Wintermark, Gregory W. Albers, Joseph P. Broderick, Andrew M. Demchuk, Jochen B. Fiebach, Jens Fiehler, James C. Grotta, Gary Houser, Tudor Jovin, Kennedy R. Lees, Michael H. Lev, David S. Liebeskind, Marie Luby, Keith W. Muir, Mark Parsons, Rüdiger von Kummer, Joanna M. Wardlaw, Ona Wu, Albert J. Yoo, Andrei V. Alexandrov, Jeffry R. Alger, Richard I. Aviv, Roland Bammer, Jean‐Claude Baron, Fernando Calamante, Bruce Campbell, Trevor C. Carpenter, Søren Christensen, William A. Copen, Colin P. Derdeyn, E. Clarke Haley, Pooja Khatri, Kohsuke Kudo, Maarten G. Lansberg, Lawrence L. Latour, Ting‐Yim Lee, Richard Leigh, Weili Lin, Patrick Lyden, Grant Mair, Bijoy K. Menon, Patrik Michel, Robert Mikulík, Raul G. Nogueira, Leif Østergaard, Salvador Pedraza, Christian Heiner Riedel, Howard A. Rowley, Pina C. Sanelli, Makoto Sasaki, Jeffrey L. Saver, Pamela W. Schaefer, Peter D. Schellinger, Georgios Tsivgoulis, Lawrence R. Wechsler, Phil White, Greg Zaharchuk, Osama O. Zaidat, Stephen M. Davis, Geoffrey A. Donnan, Anthony J. Furlan, Werner Hacke, Dong‐Wha Kang, Chelsea S. Kidwell, Vincent Thijs, Götz Thomalla, Steven Warach

    Published 2013
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