Harvard Catalyst Profiles

Contact, publication, and social network information about Harvard faculty and fellows.

Michael H Lev, M.D.

Co-Author

This page shows the publications co-authored by Michael Lev and Pamela Schaefer.
Connection Strength

5.930
  1. Limited reliability of computed tomographic perfusion acute infarct volume measurements compared with diffusion-weighted imaging in anterior circulation stroke. Stroke. 2015 Feb; 46(2):419-24.
    View in: PubMed
    Score: 0.639
  2. 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. Stroke. 2009 Aug; 40(8):2875-8.
    View in: PubMed
    Score: 0.435
  3. Quantitative assessment of core/penumbra mismatch in acute stroke: CT and MR perfusion imaging are strongly correlated when sufficient brain volume is imaged. Stroke. 2008 Nov; 39(11):2986-92.
    View in: PubMed
    Score: 0.411
  4. First-pass quantitative CT perfusion identifies thresholds for salvageable penumbra in acute stroke patients treated with intra-arterial therapy. AJNR Am J Neuroradiol. 2006 Jan; 27(1):20-5.
    View in: PubMed
    Score: 0.343
  5. Clinical, Imaging, and Lab Correlates of Severe COVID-19 Leukoencephalopathy. AJNR Am J Neuroradiol. 2021 Jan 07.
    View in: PubMed
    Score: 0.243
  6. Subarachnoid gadolinium enhancement mimicking subarachnoid hemorrhage on FLAIR MR images. Fluid-attenuated inversion recovery. AJR Am J Roentgenol. 1999 Nov; 173(5):1414-5.
    View in: PubMed
    Score: 0.223
  7. Multiple Procedure Payment Reduction: Health Policy Update. AJNR Am J Neuroradiol. 2015 Nov; 36(11):2007-9.
    View in: PubMed
    Score: 0.168
  8. Percentage insula ribbon infarction of >50% identifies patients likely to have poor clinical outcome despite small DWI infarct volume. AJNR Am J Neuroradiol. 2015 Jan; 36(1):40-5.
    View in: PubMed
    Score: 0.156
  9. Location-weighted CTP analysis predicts early motor improvement in stroke: a preliminary study. Neurology. 2012 Jun 05; 78(23):1853-9.
    View in: PubMed
    Score: 0.133
  10. Malignant CTA collateral profile is highly specific for large admission DWI infarct core and poor outcome in acute stroke. AJNR Am J Neuroradiol. 2012 Aug; 33(7):1331-6.
    View in: PubMed
    Score: 0.131
  11. CT perfusion mean transit time maps optimally distinguish benign oligemia from true "at-risk" ischemic penumbra, but thresholds vary by postprocessing technique. AJNR Am J Neuroradiol. 2012 Mar; 33(3):545-9.
    View in: PubMed
    Score: 0.130
  12. Admission CT perfusion is an independent predictor of hemorrhagic transformation in acute stroke with similar accuracy to DWI. Cerebrovasc Dis. 2012; 33(1):8-15.
    View in: PubMed
    Score: 0.129
  13. CT angiography source images acquired with a fast-acquisition protocol overestimate infarct core on diffusion weighted images in acute ischemic stroke. J Neuroimaging. 2012 Oct; 22(4):329-35.
    View in: PubMed
    Score: 0.127
  14. CT cerebral blood flow maps optimally correlate with admission diffusion-weighted imaging in acute stroke but thresholds vary by postprocessing platform. Stroke. 2011 Jul; 42(7):1923-8.
    View in: PubMed
    Score: 0.124
  15. Regional ischemic vulnerability of the brain to hypoperfusion: the need for location specific computed tomography perfusion thresholds in acute stroke patients. Stroke. 2011 May; 42(5):1255-60.
    View in: PubMed
    Score: 0.124
  16. CT angiography in head and neck trauma. Radiology. 2010 Jun; 255(3):1008-9; author reply 1009.
    View in: PubMed
    Score: 0.116
  17. Glioma recurrence versus radiation necrosis? A pilot comparison of arterial spin-labeled, dynamic susceptibility contrast enhanced MRI, and FDG-PET imaging. Acad Radiol. 2010 Mar; 17(3):282-90.
    View in: PubMed
    Score: 0.113
  18. Arterial wall enhancement overlying carotid plaque on CT angiography correlates with symptoms in patients with high grade stenosis. Stroke. 2009 May; 40(5):1894-6.
    View in: PubMed
    Score: 0.106
  19. Contrast-enhanced MR angiography is not more accurate than unenhanced 2D time-of-flight MR angiography for determining > or = 70% internal carotid artery stenosis. AJNR Am J Neuroradiol. 2009 Apr; 30(4):761-8.
    View in: PubMed
    Score: 0.106
  20. CT angiography-source image hypoattenuation predicts clinical outcome in posterior circulation strokes treated with intra-arterial therapy. Stroke. 2008 Nov; 39(11):3107-9.
    View in: PubMed
    Score: 0.103
  21. Role of recanalization in acute stroke outcome: rationale for a CT angiogram-based "benefit of recanalization" model. AJNR Am J Neuroradiol. 2008 Sep; 29(8):1471-5.
    View in: PubMed
    Score: 0.102
  22. Cerebral blood flow thresholds in acute stroke triage. Stroke. 2006 Sep; 37(9):2202; author reply 2203.
    View in: PubMed
    Score: 0.089
  23. Diffusion-weighted imaging in acute stroke. Magn Reson Imaging Clin N Am. 2006 May; 14(2):141-68.
    View in: PubMed
    Score: 0.088
  24. 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? AJNR Am J Neuroradiol. 2005 Oct; 26(9):2207-12.
    View in: PubMed
    Score: 0.084
  25. Radiation necrosis versus glioma recurrence: conventional MR imaging clues to diagnosis. AJNR Am J Neuroradiol. 2005 Sep; 26(8):1967-72.
    View in: PubMed
    Score: 0.084
  26. Diffusion-weighted imaging in acute stroke. Neuroimaging Clin N Am. 2005 Aug; 15(3):503-30, ix-x.
    View in: PubMed
    Score: 0.083
  27. 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]. AJNR Am J Neuroradiol. 2004 Feb; 25(2):214-21.
    View in: PubMed
    Score: 0.075
  28. Unique linear and nodular MR enhancement pattern in schistosomiasis of the central nervous system: report of three patients. AJR Am J Roentgenol. 2001 Dec; 177(6):1471-4.
    View in: PubMed
    Score: 0.065
  29. Susceptibility-weighted imaging reveals cerebral microvascular injury in severe COVID-19. J Neurol Sci. 2021 02 15; 421:117308.
    View in: PubMed
    Score: 0.061
  30. An East Coast Perspective on Artificial Intelligence and Machine Learning: Part 2: Ischemic Stroke Imaging and Triage. Neuroimaging Clin N Am. 2020 Nov; 30(4):467-478.
    View in: PubMed
    Score: 0.060
  31. Brain MR Spectroscopic Findings in 3 Consecutive Patients with COVID-19: Preliminary Observations. AJNR Am J Neuroradiol. 2021 01; 42(1):37-41.
    View in: PubMed
    Score: 0.060
  32. An East Coast Perspective on Artificial Intelligence and Machine Learning: Part 1: Hemorrhagic Stroke Imaging and Triage. Neuroimaging Clin N Am. 2020 Nov; 30(4):459-466.
    View in: PubMed
    Score: 0.059
  33. Cerebral Microvascular Injury in Severe COVID-19. medRxiv. 2020 Jul 24.
    View in: PubMed
    Score: 0.059
  34. Nontraumatic Head and Neck Emergencies. Radiographics. 2019 Oct; 39(6):1808-1823.
    View in: PubMed
    Score: 0.056
  35. MR Imaging Selection of Acute Stroke Patients with Emergent Large Vessel Occlusions for Thrombectomy. Neuroimaging Clin N Am. 2018 Nov; 28(4):573-584.
    View in: PubMed
    Score: 0.052
  36. Quantifying the Impact of Noninterpretive Tasks on Radiology Report Turn-Around Times. J Am Coll Radiol. 2017 Nov; 14(11):1498-1503.
    View in: PubMed
    Score: 0.048
  37. Endovascular Stroke Treatment Outcomes After Patient Selection Based on Magnetic Resonance Imaging and Clinical Criteria. JAMA Neurol. 2016 Jan; 73(1):43-9.
    View in: PubMed
    Score: 0.043
  38. The peer review process: a primer for JNIS readers. J Neurointerv Surg. 2017 Jul; 9(e1):e3-e6.
    View in: PubMed
    Score: 0.041
  39. Optimal brain MRI protocol for new neurological complaint. PLoS One. 2014; 9(10):e110803.
    View in: PubMed
    Score: 0.039
  40. Time and diffusion lesion size in major anterior circulation ischemic strokes. Stroke. 2014 Oct; 45(10):2936-41.
    View in: PubMed
    Score: 0.039
  41. Imaging recommendations for acute stroke and transient ischemic attack patients: a joint statement by the American Society of Neuroradiology, the American College of Radiology and the Society of NeuroInterventional Surgery. J Am Coll Radiol. 2013 Nov; 10(11):828-32.
    View in: PubMed
    Score: 0.036
  42. Imaging recommendations for acute stroke and transient ischemic attack patients: A joint statement by the American Society of Neuroradiology, the American College of Radiology, and the Society of NeuroInterventional Surgery. AJNR Am J Neuroradiol. 2013 Nov-Dec; 34(11):E117-27.
    View in: PubMed
    Score: 0.036
  43. Acute Stroke Imaging Research Roadmap II. Stroke. 2013 Sep; 44(9):2628-39.
    View in: PubMed
    Score: 0.036
  44. The Massachusetts General Hospital acute stroke imaging algorithm: an experience and evidence based approach. J Neurointerv Surg. 2013 May; 5 Suppl 1:i7-12.
    View in: PubMed
    Score: 0.035
  45. Rapid identification of a major diffusion/perfusion mismatch in distal internal carotid artery or middle cerebral artery ischemic stroke. BMC Neurol. 2012 Nov 05; 12:132.
    View in: PubMed
    Score: 0.034
  46. Infarct volume is a pivotal biomarker after intra-arterial stroke therapy. Stroke. 2012 May; 43(5):1323-30.
    View in: PubMed
    Score: 0.033
  47. Acute ischemic stroke: infarct core estimation on CT angiography source images depends on CT angiography protocol. Radiology. 2012 Feb; 262(2):593-604.
    View in: PubMed
    Score: 0.032
  48. CT angiography spot sign predicts in-hospital mortality in patients with secondary intracerebral hemorrhage. J Neurointerv Surg. 2012 Nov; 4(6):442-7.
    View in: PubMed
    Score: 0.032
  49. 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. AJNR Am J Neuroradiol. 2011 May; 32(5):839-45.
    View in: PubMed
    Score: 0.031
  50. 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. AJNR Am J Neuroradiol. 2010 Oct; 31(9):1653-60.
    View in: PubMed
    Score: 0.029
  51. Arterial input function placement for accurate CT perfusion map construction in acute stroke. AJR Am J Roentgenol. 2010 May; 194(5):1330-6.
    View in: PubMed
    Score: 0.029
  52. Prevalence of traumatic dural venous sinus thrombosis in high-risk acute blunt head trauma patients evaluated with multidetector CT venography. Radiology. 2010 May; 255(2):570-7.
    View in: PubMed
    Score: 0.029
  53. Multidetector CT angiography in the evaluation of acute blunt head and neck trauma: a proposed acute craniocervical trauma scoring system. Radiology. 2010 Jan; 254(1):236-44.
    View in: PubMed
    Score: 0.028
  54. The spot sign score in primary intracerebral hemorrhage identifies patients at highest risk of in-hospital mortality and poor outcome among survivors. Stroke. 2010 Jan; 41(1):54-60.
    View in: PubMed
    Score: 0.028
  55. Significance of large vessel intracranial occlusion causing acute ischemic stroke and TIA. Stroke. 2009 Dec; 40(12):3834-40.
    View in: PubMed
    Score: 0.028
  56. Systematic characterization of the computed tomography angiography spot sign in primary intracerebral hemorrhage identifies patients at highest risk for hematoma expansion: the spot sign score. Stroke. 2009 Sep; 40(9):2994-3000.
    View in: PubMed
    Score: 0.027
  57. ABC/2 for rapid clinical estimate of infarct, perfusion, and mismatch volumes. Neurology. 2009 Jun 16; 72(24):2104-10.
    View in: PubMed
    Score: 0.027
  58. An acute ischemic stroke classification instrument that includes CT or MR angiography: the Boston Acute Stroke Imaging Scale. AJNR Am J Neuroradiol. 2008 Jun; 29(6):1111-7.
    View in: PubMed
    Score: 0.025
  59. Comparison of diameter and perimeter methods for tumor volume calculation. J Clin Oncol. 2001 Jan 15; 19(2):551-7.
    View in: PubMed
    Score: 0.015
  60. Assessment of cerebral perfusion and arterial anatomy in hyperacute stroke with three-dimensional functional CT: early clinical results. AJNR Am J Neuroradiol. 1998 Jan; 19(1):29-37.
    View in: PubMed
    Score: 0.012
Connection Strength
The connection strength for co-authors is the sum of the scores for each of their shared publications.

Publication scores are based on many factors, including how long ago they were written and whether the person is a first or senior author.
Funded by the NIH National Center for Advancing Translational Sciences through its Clinical and Translational Science Awards Program, grant number UL1TR002541.