William A Copen
Affiliation: Massachusetts General Hospital
- Neurological disorders in pregnancy from a neuroimaging perspectiveSteven D Brass
Department of Neurology, Massachusetts General Hospital, Boston, Massachusetts 02114, USA
Semin Neurol 27:411-24. 2007....
- Existence of the diffusion-perfusion mismatch within 24 hours after onset of acute stroke: dependence on proximal arterial occlusionWilliam A Copen
Department of Radiology, Massachusetts General Hospital, GRB 273A, 55 Fruit St, Boston, MA 02114, USA
Radiology 250:878-86. 2009....
- MR perfusion imaging in acute ischemic strokeWilliam A Copen
Department of Radiology, Division of Neuroradiology, Massachusetts General Hospital, GRB 273A, 55 Fruit Street, Boston, MA 02114, USA
Neuroimaging Clin N Am 21:259-83, x. 2011..This review discusses the basic pathophysiology of acute stroke, the utility of different kinds of perfusion images, and research on the continually evolving role of MR perfusion imaging in acute stroke care...
- 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 outcomeAlbert J Yoo
Department of Radiology, Massachusetts General Hospital, Boston, Mass 02114, USA
Stroke 41:1728-35. 2010....
- Reliability of cerebral blood volume maps as a substitute for diffusion-weighted imaging in acute ischemic strokeAmy R Deipolyi
Department of Radiology, Massachusetts General Hospital, Boston, Massachusetts 02114, USA
J Magn Reson Imaging 36:1083-7. 2012..Some propose using perfusion imaging, specifically CBV maps, in place of DWI. We examined whether CBV maps can reliably subsitute for DWI, and assessed the effect of scan duration on calculated CBV...
- Magnetic resonance perfusion-weighted imaging of acute cerebral infarction: effect of the calculation methods and underlying vasculopathyKei Yamada
Massachusetts General Hospital NMR Center, Harvard Medical School, Boston, USA
Stroke 33:87-94. 2002..Steno-occlusive disease in the parent vessels is another factor that may affect the results of the PWI. The purpose of this study was to elucidate the effect of the calculation methods and underlying vasculopathy on PWI...
- Outcome in patients with H1N1 influenza and cerebrovascular injury treated with extracorporeal membrane oxygenationFelicia C Chow
Department of Neurology, Massachusetts General Hospital, 15 Parkman Street, Wang Ambulatory Care Center, Suite 835, Boston, MA 02114, USA
Neurocrit Care 15:156-60. 2011..Although intracranial hemorrhage and infarction have been reported in patients with H1N1 influenza infection treated with extracorporeal membrane oxygenation (ECMO), the clinical outcomes of these patients are not well described...
- The Massachusetts General Hospital acute stroke imaging algorithm: an experience and evidence based approachRAMON GILBERTO GONZALEZ
Neuroradiology Division, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, USA
J Neurointerv Surg 5:i7-12. 2013....
- Early experience of translating pH-weighted MRI to image human subjects at 3 TeslaPhillip Zhe Sun
Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Athinoula A Martinos Center for Biomedical Imaging, Charlestown, Mass 02129, USA
Stroke 41:S147-51. 2010..Tissue pH, a well-regulated physiological index that alters on disrupted tissue metabolism, may provide a surrogate metabolic imaging marker that augments the DWI and PWI for penumbra imaging...