P W Schaefer

Summary

Affiliation: Massachusetts General Hospital
Country: USA

Publications

  1. pmc Evaluating effects of normobaric oxygen therapy in acute stroke with MRI-based predictive models
    Ona Wu
    Department of Neurology, Massachusetts General Hospital, 55 Fruit Street, Boston MA 02114, USA
    Med Gas Res 2:5. 2012
  2. pmc Rapid identification of a major diffusion/perfusion mismatch in distal internal carotid artery or middle cerebral artery ischemic stroke
    Reza Hakimelahi
    Neuroradiology Division, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
    BMC Neurol 12:132. 2012
  3. pmc Stability of large diffusion/perfusion mismatch in anterior circulation strokes for 4 or more hours
    R Gilberto Gonzalez
    Neuroradiology Division, Department of Radiology, Massachusetts General Hospital, Boston, Harvard Medical School, Boston, MA 02114, USA
    BMC Neurol 10:13. 2010
  4. pmc Predictors of functional outcome vary by the hemisphere of involvement in major ischemic stroke treated with intra-arterial therapy: a retrospective cohort study
    Albert J Yoo
    Neuroradiology Division, Department of Radiology, Massachusetts General Hospital, Boston, Harvard Medical School, Boston, MA 02114, USA
    BMC Neurol 10:25. 2010
  5. doi request reprint Quantitative assessment of core/penumbra mismatch in acute stroke: CT and MR perfusion imaging are strongly correlated when sufficient brain volume is imaged
    Pamela W Schaefer
    Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
    Stroke 39:2986-92. 2008
  6. doi request reprint Avoiding "pseudo-reversibility" of CT-CBV infarct core lesions in acute stroke patients after thrombolytic therapy: the need for algorithmically "delay-corrected" CT perfusion map postprocessing software
    Pamela W Schaefer
    Department of Radiology, Division of Neuroradiology, Gray 273A, Massachusetts General Hospital, 55 Fruit Street, Boston, MA 02114, USA
    Stroke 40:2875-8. 2009
  7. ncbi request reprint Predicting cerebral ischemic infarct volume with diffusion and perfusion MR imaging
    Pamela W Schaefer
    Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
    AJNR Am J Neuroradiol 23:1785-94. 2002
  8. doi request reprint CT angiography-source image hypoattenuation predicts clinical outcome in posterior circulation strokes treated with intra-arterial therapy
    Pamela W Schaefer
    Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
    Stroke 39:3107-9. 2008
  9. ncbi request reprint Diffusion-weighted imaging in acute stroke
    Pamela W Schaefer
    Massachusetts General Hospital, Boston, MA 02114, USA
    Neuroimaging Clin N Am 15:503-30, ix-x. 2005
  10. ncbi request reprint Diffusion-weighted MR imaging in closed head injury: high correlation with initial glasgow coma scale score and score on modified Rankin scale at discharge
    Pamela W Schaefer
    Department of Radiology, Massachusetts General Hospital, 55 Fruit St, Gray B285, Boston, MA 02114, USA
    Radiology 233:58-66. 2004

Detail Information

Publications56

  1. pmc Evaluating effects of normobaric oxygen therapy in acute stroke with MRI-based predictive models
    Ona Wu
    Department of Neurology, Massachusetts General Hospital, 55 Fruit Street, Boston MA 02114, USA
    Med Gas Res 2:5. 2012
    ..abstract:..
  2. pmc Rapid identification of a major diffusion/perfusion mismatch in distal internal carotid artery or middle cerebral artery ischemic stroke
    Reza Hakimelahi
    Neuroradiology Division, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
    BMC Neurol 12:132. 2012
    ....
  3. pmc Stability of large diffusion/perfusion mismatch in anterior circulation strokes for 4 or more hours
    R Gilberto Gonzalez
    Neuroradiology Division, Department of Radiology, Massachusetts General Hospital, Boston, Harvard Medical School, Boston, MA 02114, USA
    BMC Neurol 10:13. 2010
    ..The purpose of this study was to determine the persistence of a diffusion/perfusion mismatch in patients with ICA or proximal MCA occlusions...
  4. pmc Predictors of functional outcome vary by the hemisphere of involvement in major ischemic stroke treated with intra-arterial therapy: a retrospective cohort study
    Albert J Yoo
    Neuroradiology Division, Department of Radiology, Massachusetts General Hospital, Boston, Harvard Medical School, Boston, MA 02114, USA
    BMC Neurol 10:25. 2010
    ..The purpose of this study was to characterize the impact of stroke lateralization on both functional outcome and its predictors in a well-defined population of anterior circulation proximal artery occlusions treated with IAT...
  5. doi request reprint Quantitative assessment of core/penumbra mismatch in acute stroke: CT and MR perfusion imaging are strongly correlated when sufficient brain volume is imaged
    Pamela W Schaefer
    Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
    Stroke 39:2986-92. 2008
    ....
  6. doi request reprint Avoiding "pseudo-reversibility" of CT-CBV infarct core lesions in acute stroke patients after thrombolytic therapy: the need for algorithmically "delay-corrected" CT perfusion map postprocessing software
    Pamela W Schaefer
    Department of Radiology, Division of Neuroradiology, Gray 273A, Massachusetts General Hospital, 55 Fruit Street, Boston, MA 02114, USA
    Stroke 40:2875-8. 2009
    ..We sought to determine: (1) the prevalence of CT-CBV "reversibility" in AIS patients treated with thrombolytic therapy, and (2) whether the presumed tissue salvage of these CT-CBV lesions depends on the CTP software...
  7. ncbi request reprint Predicting cerebral ischemic infarct volume with diffusion and perfusion MR imaging
    Pamela W Schaefer
    Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
    AJNR Am J Neuroradiol 23:1785-94. 2002
    ..Diffusion and perfusion MR imaging have proved useful in the assessment of acute stroke. We evaluated the utility of these techniques in detecting acute ischemic infarction and in predicting final infarct size...
  8. doi request reprint CT angiography-source image hypoattenuation predicts clinical outcome in posterior circulation strokes treated with intra-arterial therapy
    Pamela W Schaefer
    Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
    Stroke 39:3107-9. 2008
    ..The aim of this study was to correlate CT angiography-source image (CTA-SI) parenchymal hypoattenuation with clinical outcome in patients with vertebrobasilar occlusion treated with intra-arterial thrombolysis...
  9. ncbi request reprint Diffusion-weighted imaging in acute stroke
    Pamela W Schaefer
    Massachusetts General Hospital, Boston, MA 02114, USA
    Neuroimaging Clin N Am 15:503-30, ix-x. 2005
    ..Also, because predictable progression of diffusion findings occurs during the evolution of ischemia, DWI enables more precise estimation of the time of stroke onset than does conventional imaging...
  10. ncbi request reprint Diffusion-weighted MR imaging in closed head injury: high correlation with initial glasgow coma scale score and score on modified Rankin scale at discharge
    Pamela W Schaefer
    Department of Radiology, Massachusetts General Hospital, 55 Fruit St, Gray B285, Boston, MA 02114, USA
    Radiology 233:58-66. 2004
    ..To determine whether diffusion-weighted magnetic resonance (MR) imaging findings and conventional MR imaging findings correlate with initial Glasgow Coma Scale score and score on modified Rankin scale at discharge...
  11. ncbi request reprint Applications of DWI in clinical neurology
    P W Schaefer
    Neuroradiology Division, Massachusetts General Hospital, Fruit Street, Boston, MA 02114 2696, USA
    J Neurol Sci 186:S25-35. 2001
    ..Because acute stroke is common in the differential diagnosis of the majority of patients who present with acute neurologic deficits, diffusion-weighted imaging has become an essential sequence...
  12. ncbi request reprint Regional ischemia and ischemic injury in patients with acute middle cerebral artery stroke as defined by early diffusion-weighted and perfusion-weighted MRI
    G Rordorf
    Department of Neurology, Massachusetts General Hospital, Boston 02114, USA
    Stroke 29:939-43. 1998
    ..MRI can now delineate very early infarction by diffusion-weighted imaging (DWI) and abnormal tissue perfusion by perfusion-weighted imaging (PWI)...
  13. doi request reprint Interobserver reliability of baseline noncontrast CT Alberta Stroke Program Early CT Score for intra-arterial stroke treatment selection
    A C Gupta
    Division of Diagnostic, Neuroradiology, Massachusetts General Hospital Harvard Medical School, Boston, Massachusetts, USA
    AJNR Am J Neuroradiol 33:1046-9. 2012
    ..We sought to determine the interobserver reliability of ASPECTS for patients with AIS with PAO and to determine whether pretreatment ASPECTS dichotomized at 7 would demonstrate at least substantial κ agreement...
  14. pmc Malignant CTA collateral profile is highly specific for large admission DWI infarct core and poor outcome in acute stroke
    L C S Souza
    Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114 9567, USA
    AJNR Am J Neuroradiol 33:1331-6. 2012
    ....
  15. pmc ABC/2 for rapid clinical estimate of infarct, perfusion, and mismatch volumes
    J R Sims
    Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Charlestown, 02129, USA
    Neurology 72:2104-10. 2009
    ..Rapid and easy clinical assessments for volumes of infarction and perfusion mismatch are needed. We tested whether simple geometric models generated accurate estimates of these volumes...
  16. ncbi request reprint Frequency and clinical context of decreased apparent diffusion coefficient reversal in the human brain
    P E Grant
    Department of Radiology, Massachusetts General Hospital, Gray 2, Rm B285, 55 Fruit St, Boston, MA 02114 2696, USA
    Radiology 221:43-50. 2001
    ..To determine the probability that regions of decreased apparent diffusion coefficient (ADC) return to normal without persistent symptoms or T2 change and the settings in which these ADC reversals occur...
  17. pmc Frequency of adequate contrast opacification of the major intracranial venous structures with CT angiography in the setting of intracerebral hemorrhage: comparison of 16- and 64-section CT angiography techniques
    J E Delgado Almandoz
    Division of Neuroradiology, Massachusetts General Hospital, Harvard Medical School, Boston, USA
    AJNR Am J Neuroradiol 32:839-45. 2011
    ..We aimed to determine the frequency of adequate contrast opacification of the major intracranial venous structures in CTAs performed for ICH evaluation, which is an essential factor in excluding DVST as the ICH etiology...
  18. doi request reprint Role of recanalization in acute stroke outcome: rationale for a CT angiogram-based "benefit of recanalization" model
    E S Rosenthal
    Department of Neurology, Massachusetts General Hospital, Boston, MA 02114, USA
    AJNR Am J Neuroradiol 29:1471-5. 2008
    ..This pilot study evaluated the impact of recanalization status on clinical and radiologic predictors of patient outcomes...
  19. pmc Location-weighted CTP analysis predicts early motor improvement in stroke: a preliminary study
    S Payabvash
    Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, USA
    Neurology 78:1853-9. 2012
    ..To develop multivariate models for prediction of early motor deficit improvement in acute stroke patients with focal extremity paresis, using admission clinical and imaging data...
  20. pmc CT perfusion mean transit time maps optimally distinguish benign oligemia from true "at-risk" ischemic penumbra, but thresholds vary by postprocessing technique
    Shervin Kamalian
    Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114 9657, USA
    AJNR Am J Neuroradiol 33:545-9. 2012
    ..The purpose of this study was to determine the optimal CTP parameter and threshold to distinguish true "at-risk" penumbra from benign oligemia in acute stroke patients without reperfusion...
  21. doi request reprint An acute ischemic stroke classification instrument that includes CT or MR angiography: the Boston Acute Stroke Imaging Scale
    F Torres-Mozqueda
    Neuroradiology Division, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
    AJNR Am J Neuroradiol 29:1111-7. 2008
    ....
  22. ncbi request reprint First-pass quantitative CT perfusion identifies thresholds for salvageable penumbra in acute stroke patients treated with intra-arterial therapy
    P W Schaefer
    Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
    AJNR Am J Neuroradiol 27:20-5. 2006
    ..The purpose of this study was to determine whether, in acute stroke patients treated with intra-arterial (IA) recanalization therapy, CT perfusion (CTP) can distinguish ischemic brain tissue destined to infarct from that which will survive...
  23. doi request reprint Contrast-enhanced MR angiography is not more accurate than unenhanced 2D time-of-flight MR angiography for determining > or = 70% internal carotid artery stenosis
    L S Babiarz
    Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Mass 02114, USA
    AJNR Am J Neuroradiol 30:761-8. 2009
    ....
  24. pmc Practical scoring system for the identification of patients with intracerebral hemorrhage at highest risk of harboring an underlying vascular etiology: the Secondary Intracerebral Hemorrhage Score
    J E Delgado Almandoz
    Division of Neuroradiology, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
    AJNR Am J Neuroradiol 31:1653-60. 2010
    ..Our aim was to develop a practical scoring system to stratify patients with ICH according to their risk of harboring a vascular etiology...
  25. doi request reprint Cerebral blood flow thresholds for tissue infarction in patients with acute ischemic stroke treated with intra-arterial revascularization therapy depend on timing of reperfusion
    K Mui
    Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, USA
    AJNR Am J Neuroradiol 32:846-51. 2011
    ..Our aim was to determine if CBF thresholds for tissue infarction depend on the timing of recanalization in patients with acute stroke treated with IAT...
  26. ncbi request reprint Diagnostic value of apparent diffusion coefficient hyperintensity in selected patients with acute neurologic deficits
    P W Schaefer
    Harvard Medical School, Massachusetts General Hospital, Boston, Massachusetts, USA
    J Neuroimaging 11:369-80. 2001
    ..Frequently, these conditions are potentially reversible if appropriately managed. DWI and conventional images alone are not sufficient to identify these neurologic conditions...
  27. ncbi request reprint Diffusion-weighted magnetic resonance imaging identifies the "clinically relevant" small-penetrator infarcts
    J Oliveira-Filho
    Department of Neurology Stroke Service, Blake 1291B, Massachusetts General Hospital, Harvard Medical School, 55 Fruit St, Boston, MA 02114, USA
    Arch Neurol 57:1009-14. 2000
    ..Diffusion-weighted imaging (DWI) can identify the clinically relevant "index infarction" in such circumstances, since it differentiates between acute and chronic lesions...
  28. ncbi request reprint Ischemic stroke: effects of etiology and patient age on the time course of the core apparent diffusion coefficient
    W A Copen
    Harvard Medical School, NMR Center, Massachusetts General Hospital, Boston, MA 02129, USA
    Radiology 221:27-34. 2001
    ..Within the smaller sample of lacunes, however, no significant age-related difference in this rate was found. CONCLUSION: Differences in ADC depending on the patient's age and infarct etiology suggest differing rates of ADC progression...
  29. ncbi request reprint Spinal dural enhancement on magnetic resonance imaging associated with spontaneous intracranial hypotension. Report of three cases and review of the literature
    N N Moayeri
    Department of Neurosurgery, Massachusetts General Hospital, Boston, USA
    J Neurosurg 88:912-8. 1998
    ..Treatment with an epidural blood patch is shown to be particularly effective, with resolution of the radiological and clinical findings...
  30. doi request reprint Diagnostic accuracy and yield of multidetector CT angiography in the evaluation of spontaneous intraparenchymal cerebral hemorrhage
    J E Delgado Almandoz
    Division of Neuroradiology, Radiology Department, Massachusetts General Hospital, Boston, MA 02114, USA
    AJNR Am J Neuroradiol 30:1213-21. 2009
    ..This study aims to evaluate the diagnostic accuracy and yield of MDCTA for the detection of vascular etiologies in adult patients presenting to the emergency department with IPH...
  31. ncbi request reprint Improved detection of skull metastasis with diffusion-weighted MR imaging
    A J Nemeth
    Neuroradiology Division, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
    AJNR Am J Neuroradiol 28:1088-92. 2007
    ..We sought to determine if diffusion-weighted MR imaging (DWI) could improve the detection of skull metastasis in patients with primary carcinomas that metastasized to bone compared with conventional MR imaging...
  32. ncbi request reprint Magnetic resonance imaging of cerebral hemorrhagic stroke
    A Zaheer
    Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, USA
    Top Magn Reson Imaging 11:288-99. 2000
    ..The MRI appearances of hemorrhagic transformation of ischemic infarction, as well as acute hypertensive intracerebral hemorrhage, are discussed based on clinical, biochemical, and technical aspects...
  33. ncbi request reprint Unique linear and nodular MR enhancement pattern in schistosomiasis of the central nervous system: report of three patients
    P C Sanelli
    Department of Radiology, Massachusetts General Hospital, 55 Fruit St, Gray Building 2nd Floor, Boston, MA 02114, USA
    AJR Am J Roentgenol 177:1471-4. 2001
    ..Although the pattern is not present in all cases of CNS schistosomiasis, when it is observed, a diagnosis of CNS schistosomiasis should be considered...
  34. ncbi request reprint Diffusion-weighted MRI in diffuse axonal injury of the brain
    K Hergan
    Department of Radiology, Neuroradiology Section and MGH NMR Center, Massachusetts General Hospital and Harvard Medical School, Building 149, 13th Street, Mailcode 149 2301, Boston, MA 02129, USA
    Eur Radiol 12:2536-41. 2002
    ..Different degrees of tissue injury extent were noticed. Future prospective studies should study if this additional information can be used as a predictor of injury reversibility, final outcome and prognosis...
  35. ncbi request reprint Comparison of diameter and perimeter methods for tumor volume calculation
    A G Sorensen
    MGH NMR Center and Neuroradiology Division, Department of Radiology, Massachusetts General Hospital, Charlestown, MA 02129, USA
    J Clin Oncol 19:551-7. 2001
    ..We sought to compare the common method of using orthogonal diameters to estimate lesion volume (the diameter method) with a computer-assisted planimetric technique (the perimeter method)...
  36. ncbi request reprint Unilateral temporal lobe stroke causing ischemic transient global amnesia: role for diffusion-weighted imaging in the initial evaluation
    D M Greer
    Department of Neurology, Massachusetts General Hospital and Harvard Medical School, Boston, USA
    J Neuroimaging 11:317-9. 2001
    ..DWI permits early detection of small ischemic lesions and may identify patients with ischemic TGA who should be evaluated for potential sources of emboli...
  37. ncbi request reprint Virtual TeleStroke support for the emergency department evaluation of acute stroke
    Lee H Schwamm
    Department of Neurology, VBK 915, Massachusetts General Hospital, Boston, MA 02114, USA
    Acad Emerg Med 11:1193-7. 2004
    ..Telemedicine-enabled acute stroke consultation (TeleStroke) may be useful to determine eligibility for treatment with tissue plasminogen activator (tPA) and provide support to emergency departments without on-site stroke expertise...
  38. ncbi request reprint Diffusion-weighted imaging for the evaluation of diffuse axonal injury in closed head injury
    Thierry A G M Huisman
    Department of Radiology, Neuroradiology Section, and MGH NMR Center, Massachusetts General Hospital, Harvard Medical School, Charlestown Boston, USA
    J Comput Assist Tomogr 27:5-11. 2003
    ..The purpose of this work was to compare diffusion-weighted imaging (DWI) with conventional MRI in the detection of shearing injuries in acute closed head injuries...
  39. ncbi request reprint 'Footprints' of transient ischemic attacks: a diffusion-weighted MRI study
    Hakan Ay
    Stroke Service of the Neurology, Massachusetts General Hospital, and Harvard Medical School, Boston, Mass, USA
    Cerebrovasc Dis 14:177-86. 2002
    ..We aimed to determine the proportion and clinical characteristics of patients with TIA who harbor infarction(s) on DWI...
  40. ncbi request reprint CT and conventional and diffusion-weighted MR imaging in acute stroke: study in 691 patients at presentation to the emergency department
    Mark E Mullins
    Neuroradiology Division, Massachusetts General Hospital, Harvard Medical School, 55 Fruit St, GRB285, Boston, MA 02114, USA
    Radiology 224:353-60. 2002
    ..To compare the diagnostic accuracy of computed tomography (CT) and magnetic resonance (MR) imaging in a consecutive series of patients at presentation to the emergency department with symptoms of acute stroke...
  41. ncbi request reprint Diffusion MR imaging of acute ischemic stroke
    Javier M Romero
    Neuroradiology Division, Massachusetts General Hospital, and Harvard Medical School, Boston, Massachusetts, USA
    Neuroimaging Clin N Am 12:35-53. 2002
    ..Diffusion combined with perfusion MR imaging provides information about the operational ischemic penumbra and final infarct size. Diffusion MR imaging seems to be promising in the evaluation of candidates for thrombolysis...
  42. ncbi request reprint A pilot study of normobaric oxygen therapy in acute ischemic stroke
    Aneesh B Singhal
    Department of Neurology, Massachusetts General Hospital and Harvard Medical School, Boston, Mass 02114, USA
    Stroke 36:797-802. 2005
    ..Therapies that transiently prevent ischemic neuronal death can potentially extend therapeutic time windows for stroke thrombolysis. We conducted a pilot study to investigate the effects of high-flow oxygen in acute ischemic stroke...
  43. ncbi request reprint Assessing tissue viability with MR diffusion and perfusion imaging
    Pamela W Schaefer
    Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
    AJNR Am J Neuroradiol 24:436-43. 2003
    ..We sought to determine parameters that distinguish regions of brain destined for infarction from those that will survive despite hypoperfusion...
  44. ncbi request reprint Characterization and evolution of diffusion MR imaging abnormalities in stroke patients undergoing intra-arterial thrombolysis
    Pamela W Schaefer
    Department of Radiology, Division of Neuroradiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
    AJNR Am J Neuroradiol 25:951-7. 2004
    ..We evaluated the evolution of abnormal DWI findings in patients with acute stroke who underwent thrombolysis...
  45. ncbi request reprint Evolution of water diffusion and anisotropy in hyperacute stroke: significant correlation between fractional anisotropy and T2
    Yelda Ozsunar
    Department of Radiology, School of Medicine, Adnan Menderes University, Aydin, Turkey
    AJNR Am J Neuroradiol 25:699-705. 2004
    ..Our purpose was to correlate fractional anisotropy (FA) measurements with the clinical time of stroke onset, apparent diffusion coefficients (ADC), and T2 signal intensity...
  46. doi request reprint Severity of leukoaraiosis and susceptibility to infarct growth in acute stroke
    Hakan Ay
    A A Martinos Center for Biomedical Imaging and Stroke Service, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, 149 13th Street, Room 2301, Charlestown, MA 02129, USA
    Stroke 39:1409-13. 2008
    ..We hypothesized that the volume of LA correlated with the proportion of initially ischemic but eventually infarcted tissue in acute human stroke...
  47. ncbi request reprint Diffusion tensor imaging as potential biomarker of white matter injury in diffuse axonal injury
    Thierry A G M Huisman
    MGH NMR Center, Division of Neuroradiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
    AJNR Am J Neuroradiol 25:370-6. 2004
    ..Our objective was to determine if changes in anisotropic diffusion in TBI correlate with acute Glasgow coma scale (GCS) and/or Rankin scores at discharge...
  48. ncbi request reprint Glial tumor grading and outcome prediction using dynamic spin-echo MR susceptibility mapping compared with conventional contrast-enhanced MR: confounding effect of elevated rCBV of oligodendrogliomas [corrected]
    Michael H Lev
    Departments of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
    AJNR Am J Neuroradiol 25:214-21. 2004
    ..We compared the specificity of SE rCBV mapping with that of conventional, contrast material-enhanced MR imaging in differentiating high- from low-grade glial tumors and in predicting survival of patients with these lesions...
  49. ncbi request reprint Magnetic resonance spectroscopy study of oxygen therapy in ischemic stroke
    Aneesh B Singhal
    Stroke 38:2851-4. 2007
    ..Recent studies suggest that normobaric oxygen therapy (NBO) is neuroprotective in acute ischemic stroke...
  50. ncbi request reprint Magnetic resonance angiography in acute stroke
    David Yu
    Neuroradiology Division, Stroke Service, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
    Semin Roentgenol 37:212-8. 2002
  51. ncbi request reprint Parenchymal abnormalities associated with cerebral venous sinus thrombosis: assessment with diffusion-weighted MR imaging
    Mark E Mullins
    Department of Radiology, 55 Fruit St, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
    AJNR Am J Neuroradiol 25:1666-75. 2004
    ..We assessed the relationship between the diffusion constant from apparent diffusion coefficient (ADC) maps in patients with cerebral venous thrombosis (CVT) with follow-up imaging findings and clinical outcome...
  52. ncbi request reprint Diffusion magnetic resonance imaging of acute ischemic stroke
    Pamela W Schaefer
    Neuroradiology Division, Stroke Service, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
    Semin Roentgenol 37:219-29. 2002
  53. ncbi request reprint Case records of the Massachusetts General Hospital. Weekly clinicopathological exercises. Case 4-2004. A nine-month-old boy with an orbital rhabdomyosarcoma
    Alison M Friedmann
    Division of Pediatric Hematology Oncology, Pediatric Service, Massachusetts General Hospital, USA
    N Engl J Med 350:494-502. 2004
  54. ncbi request reprint Effects of tracer arrival time on flow estimates in MR perfusion-weighted imaging
    Ona Wu
    Athinoula A Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology Harvard Medical School, Boston, 02129, USA
    Magn Reson Med 50:856-64. 2003
    ..These conditions may occur in practice due to the application of a user-selected AIF that is not the "true AIF" and therefore caution must be taken in interpreting CBF and MTT estimates...
  55. ncbi request reprint Intracranial hemorrhage complicating acute stroke: how common is hemorrhagic stroke on initial head CT scan and how often is initial clinical diagnosis of acute stroke eventually confirmed?
    Mark E Mullins
    Department of Radiology, Division of Neuroradiology, Massachusetts General Hospital, Boston, MA 02114, USA
    AJNR Am J Neuroradiol 26:2207-12. 2005
    ..In addition, we sought to determine the frequency with which initial clinical diagnosis acute stroke is confirmed in this group...
  56. ncbi request reprint Radiation necrosis versus glioma recurrence: conventional MR imaging clues to diagnosis
    Mark E Mullins
    Department of Radiology, Massachusetts General Hospital, Boston, MA 02114, USA
    AJNR Am J Neuroradiol 26:1967-72. 2005
    ....