Richard I Aviv

Summary

Affiliation: Sunnybrook Health Sciences Centre
Country: Canada

Publications

  1. doi request reprint Spot sign number is the most important spot sign characteristic for predicting hematoma expansion using first-pass computed tomography angiography: analysis from the PREDICT study
    Thien J Huynh
    Division of Neuroradiology and Department of Medical Imaging, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Canada
    Stroke 44:972-7. 2013
  2. doi request reprint Decreased frontal lobe gray matter perfusion in cognitively impaired patients with secondary-progressive multiple sclerosis detected by the bookend technique
    R I Aviv
    Department of Medical Imaging, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
    AJNR Am J Neuroradiol 33:1779-85. 2012
  3. doi request reprint Cavum septi pellucidi in boxers
    Richard I Aviv
    Department of Neuroradiology, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
    Can Assoc Radiol J 61:29-32; quiz 1-2. 2010
  4. pmc Automatic volumetry on MR brain images can support diagnostic decision making
    Rolf A Heckemann
    Division of Neurosciences and Mental Health, Imperial College London, Hammersmith Campus, Du Cane Road, London, UK
    BMC Med Imaging 8:9. 2008
  5. doi request reprint Comparison of computed tomography angiography with digital subtraction angiography in the assessment of clipped intracranial aneurysms
    Aditya Bharatha
    Division of Neuroradiology, Department of Medical Imaging, University of Toronto, Toronto, Canada
    J Comput Assist Tomogr 34:440-5. 2010
  6. doi request reprint The spot sign is more common in the absence of multiple prior microbleeds
    Andrea Evans
    Division of Neuroradiology, Department of Medical Imaging, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
    Stroke 41:2210-7. 2010
  7. doi request reprint The evolution of the cerebral blood volume abnormality in patients with ischemic stroke: a CT perfusion study
    Christopher D d'Esterre
    Lawson Health Research Institute, London, Ontario, Canada
    Acta Radiol 53:461-7. 2012
  8. doi request reprint Certainty of stroke diagnosis: incremental benefit with CT perfusion over noncontrast CT and CT angiography
    Julia Hopyan
    Department of Diagnostic Imaging, Division of Neuroradiology, Room AG 31, Sunnybrook Health Sciences Centre, 2075 Bayview Ave, Toronto, ON, Canada M4N 3M5
    Radiology 255:142-53. 2010
  9. doi request reprint Crescendo transient Aura attacks: a transient ischemic attack mimic caused by focal subarachnoid hemorrhage
    Aaron Izenberg
    Dr Thomas and Harriet Black Acute TIA Unit and Regional Stroke Prevention Clinic, Division of Neurology and Brain Sciences Program, Sunnybrook Health Sciences Centre, Department of Medicine, University of Toronto, Toronto, Toronto, Ontario Canada
    Stroke 40:3725-9. 2009
  10. doi request reprint Vascular and nonvascular mimics of the CT angiography "spot sign" in patients with secondary intracerebral hemorrhage
    Steve Gazzola
    Department of Medical Imaging, Sunnybrook Health Sciences Centre, University of Toronto, Ontario, Canada
    Stroke 39:1177-83. 2008

Collaborators

Detail Information

Publications33

  1. doi request reprint Spot sign number is the most important spot sign characteristic for predicting hematoma expansion using first-pass computed tomography angiography: analysis from the PREDICT study
    Thien J Huynh
    Division of Neuroradiology and Department of Medical Imaging, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Canada
    Stroke 44:972-7. 2013
    ..We sought to validate the SSS and assess prognostic performance of individual spot characteristics associated with hematoma expansion from a prospective multicenter intracerebral hemorrhage study...
  2. doi request reprint Decreased frontal lobe gray matter perfusion in cognitively impaired patients with secondary-progressive multiple sclerosis detected by the bookend technique
    R I Aviv
    Department of Medical Imaging, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
    AJNR Am J Neuroradiol 33:1779-85. 2012
    ..We sought to quantify differences in MR imaging-based bookend-derived cerebral perfusion between cognitively impaired and nonimpaired patients with SPMS...
  3. doi request reprint Cavum septi pellucidi in boxers
    Richard I Aviv
    Department of Neuroradiology, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
    Can Assoc Radiol J 61:29-32; quiz 1-2. 2010
    ..Few magnetic resonance imaging (MRI) studies have looked at large cohorts of boxers. The aim of this study was to identify the prevalence and extent of a CSP among professional boxers and to compare these with a control group...
  4. pmc Automatic volumetry on MR brain images can support diagnostic decision making
    Rolf A Heckemann
    Division of Neurosciences and Mental Health, Imperial College London, Hammersmith Campus, Du Cane Road, London, UK
    BMC Med Imaging 8:9. 2008
    ....
  5. doi request reprint Comparison of computed tomography angiography with digital subtraction angiography in the assessment of clipped intracranial aneurysms
    Aditya Bharatha
    Division of Neuroradiology, Department of Medical Imaging, University of Toronto, Toronto, Canada
    J Comput Assist Tomogr 34:440-5. 2010
    ..To examine whether computed tomography angiography (CTA) is comparable to digital subtraction angiography (DSA) in assessing clipped intracranial aneurysms...
  6. doi request reprint The spot sign is more common in the absence of multiple prior microbleeds
    Andrea Evans
    Division of Neuroradiology, Department of Medical Imaging, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
    Stroke 41:2210-7. 2010
    ..We hypothesize that the Spot sign is more common in patients without multiple prior chronic microbleeds...
  7. doi request reprint The evolution of the cerebral blood volume abnormality in patients with ischemic stroke: a CT perfusion study
    Christopher D d'Esterre
    Lawson Health Research Institute, London, Ontario, Canada
    Acta Radiol 53:461-7. 2012
    ..Abnormality volumes from diffusion-weighted MRI (DWI) and CT perfusion (CTP)-cerebral blood volume (CBV) are highly correlated. DWI lesions have been shown to be reversible at 24 h...
  8. doi request reprint Certainty of stroke diagnosis: incremental benefit with CT perfusion over noncontrast CT and CT angiography
    Julia Hopyan
    Department of Diagnostic Imaging, Division of Neuroradiology, Room AG 31, Sunnybrook Health Sciences Centre, 2075 Bayview Ave, Toronto, ON, Canada M4N 3M5
    Radiology 255:142-53. 2010
    ....
  9. doi request reprint Crescendo transient Aura attacks: a transient ischemic attack mimic caused by focal subarachnoid hemorrhage
    Aaron Izenberg
    Dr Thomas and Harriet Black Acute TIA Unit and Regional Stroke Prevention Clinic, Division of Neurology and Brain Sciences Program, Sunnybrook Health Sciences Centre, Department of Medicine, University of Toronto, Toronto, Toronto, Ontario Canada
    Stroke 40:3725-9. 2009
    ..Diagnosis of transient ischemic attack can be difficult because many mimics exist. We report the clinical and neuroimaging features of a distinct hemorrhagic transient ischemic attack mimic...
  10. doi request reprint Vascular and nonvascular mimics of the CT angiography "spot sign" in patients with secondary intracerebral hemorrhage
    Steve Gazzola
    Department of Medical Imaging, Sunnybrook Health Sciences Centre, University of Toronto, Ontario, Canada
    Stroke 39:1177-83. 2008
    ..The purpose of this study was to assess for the presence of the Spot Sign in secondary ICH and to document potential mimics of the Spot Sign and their distinguishing features...
  11. ncbi request reprint NASCET percent stenosis semi-automated versus manual measurement on CTA
    Kevin Lian
    Division of Neuroradiology, Department of Medical Imaging, University of Toronto, Toronto, Ontario, Canada
    Can J Neurol Sci 39:343-6. 2012
    ....
  12. doi request reprint Hemorrhagic transformation of ischemic stroke: prediction with CT perfusion
    Richard I Aviv
    Division of Neuroradiology, Sunnybrook Health Science Centre, Toronto, Ontario, Canada
    Radiology 250:867-77. 2009
    ..To determine whether admission computed tomography (CT) perfusion-derived permeability-surface area product (PS) maps differ between patients with hemorrhagic acute stroke and those with nonhemorrhagic acute stroke...
  13. doi request reprint Magnetic resonance imaging of facial nerve schwannoma
    Andrew L Thompson
    Division of Neuroradiology, Department of Medical Imaging, University of Toronto, Toronto, Ontario, Canada
    Laryngoscope 119:2428-36. 2009
    ....
  14. ncbi request reprint Reproducibility of semi-automated measurement of carotid stenosis on CTA
    Jeremy H White
    Division of Neuroradiology, Department of Medical Imaging, University of Toronto, Toronto, Ontario, Canada
    Can J Neurol Sci 37:498-503. 2010
    ..To compare the reproducibility of semi-automated vessel analysis software to manual measurement of carotid artery stenosis on computed tomography angiography (CTA)...
  15. doi request reprint Interobserver agreement of ASPECT score distribution for noncontrast CT, CT angiography, and CT perfusion in acute stroke
    Olga Finlayson
    MBChB, Division of Neuroradiology, Sunnybrook Health Sciences Centre, 2075 Bayview Ave, Toronto, Ontario M4N 3M5, Canada
    Stroke 44:234-6. 2013
    ..Good interobserver agreement of total ASPECTS is demonstrated for noncontrast CT (NCCT) and other imaging modalities. Our purpose is to assess interobserver agreement for individual ASPECTS regions for different imaging modalities...
  16. doi request reprint Postcontrast CT extravasation is associated with hematoma expansion in CTA spot negative patients
    Ashraf Ederies
    Department of Medical Imaging, Division of Neuroradiology, Sunnybrook Health Sciences Centre, University of Toronto, Ontario, Canada
    Stroke 40:1672-6. 2009
    ..The purpose of this study was to assess the effect of postcontrast CT (PCCT) leakage (PCL) on hematoma growth in CTA spot negative patients...
  17. ncbi request reprint Comparison of CTA to DSA in determining the etiology of spontaneous ICH
    Robert Yeung
    Division of Neuroradiology, Department of Medical Imaging, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
    Can J Neurol Sci 36:176-80. 2009
    ..To compare the efficacy of computed tomographic angiography (CTA) to that of digital subtraction angiography (DSA) in the detection of secondary causes of intracerebral hemorrhage (ICH)...
  18. doi request reprint White matter thresholds for ischemic penumbra and infarct core in patients with acute stroke: CT perfusion study
    Blake D Murphy
    Department of Imaging, Lawson Health Research Institute, London, Ontario, Canada
    Radiology 247:818-25. 2008
    ....
  19. doi request reprint Characterization of carotid plaque hemorrhage: a CT angiography and MR intraplaque hemorrhage study
    Jean Marie U-King-Im
    Division of Neuroradiology, Department of Medical Imaging, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
    Stroke 41:1623-9. 2010
    ..The main objective of this study was to evaluate CT angiographic (CTA) features that are able to predict the presence of intraplaque hemorrhage (IPH) as defined by MR-IPH...
  20. doi request reprint Intracranial arterial fenestrations: frequency on CT angiography and association with other vascular lesions
    Aditya Bharatha
    Division of Neuroradiology, Department of Medical Imaging, Sunnybrook Health Sciences Centre, University of Toronto, 2075 Bayview Avenue, AG33A, Toronto, ON, Canada
    Surg Radiol Anat 30:397-401. 2008
    ..Although the association of aneurysms at the site of fenestrations is well documented, our results do not show an overall higher rate of aneurysm formation in patients with fenestrations compared to those without...
  21. ncbi request reprint Defining the CT angiography 'spot sign' in primary intracerebral hemorrhage
    Andrew L Thompson
    Division of Neuroradiology, Department of Medical Imaging, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
    Can J Neurol Sci 36:456-61. 2009
    ..We propose radiological criteria for diagnosis of the CTA 'spot sign' and describe different morphological patterns...
  22. doi request reprint Diffuse ischemia in noncontrast computed tomography predicts outcome in patients in intensive care unit
    Santanu Chakraborty
    Department of Neuroradiology, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
    Can Assoc Radiol J 63:129-34. 2012
    ..Noncontrast computed tomography (CT) shows diffuse loss of grey-white differentiation consistent with infarction. We hypothesize that the extent of hypodensity is predictive of poor neurologic outcome or brain death...
  23. pmc Aspergillosis of the Petrous Apex and Meckel's Cave
    Ash Ederies
    Division of Neuroradiology, Department of Medical Imaging, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
    Skull Base 20:189-92. 2010
    ..We present a case of localized invasive petrous apical and Meckel's cave disease in an immunocompetent patient who presented with hemicranial neuralgic pain...
  24. doi request reprint Chondromyxoid fibroma of the mastoid facial nerve canal mimicking a facial nerve schwannoma
    Andrew L Thompson
    Division of Neuroradiology, Department of Medical Imaging, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
    Laryngoscope 119:1380-3. 2009
    ..Surgery revealed an irregular, cystic lesion. Pathology diagnosed a chondromyxoid fibroma involving the mastoid portion of the facial nerve canal, destroying the facial nerve...
  25. doi request reprint Global hemispheric CT hypoperfusion may differentiate headache with associated neurological deficits and lymphocytosis from acute stroke
    Jacqueline A Pettersen
    Stroke Foundation Centre for Stroke Recovery, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
    Stroke 39:492-3. 2008
  26. doi request reprint Rare frontal lobe intraparenchymal epidermoid cyst with atypical imaging
    Kevin Lian
    Division of Neuroradiology, Department of Medical Imaging, Faculty of Medicine, University of Toronto, Toronto, Canada
    J Clin Neurosci 19:1185-7. 2012
    ..The authors present a patient with a rare intraparenchymal epidermoid cyst of the frontal lobe with atypical imaging features...
  27. ncbi request reprint CT angiographic depiction of a supraclinoid ICA fenestration mimicking aneurysm, confirmed with catheter angiography
    Aditya Bharatha
    Neuroradiology Division, Department of Medical Imaging, Sunnybrook Health Sciences Centre, University of Toronto, 2075 Bayview Avenue, AG33A, Toronto, ON, Canada M4N 3M5
    Surg Radiol Anat 29:317-21. 2007
    ..To our knowledge, this represents the first time that this rare variant has been identified with cross-sectional imaging. A review of the literature including proposed embryology is provided...
  28. doi request reprint Radiation dose from multidetector row CT imaging for acute stroke
    Anisa Mnyusiwalla
    Department of Medical Imaging, Division of Neuroradiology, Sunnybrook Health Sciences Center, University of Toronto, Toronto, ON, Canada
    Neuroradiology 51:635-40. 2009
    ..The objective of this study was to determine the radiation dose delivered during comprehensive computed tomography (CT) imaging for acute stroke...
  29. doi request reprint Planimetric hematoma measurement in patients with intraventricular hemorrhage: is total volume a preferred target for reliable analysis?
    Dar Dowlatshahi
    Division of Neurology, Department of Medicine, University of Ottawa and Ottawa Hospital Research Insitute, Civic Campus, Room C2182b, 1053 Carling Ave, Ottawa, Ontario, Canada
    Stroke 43:1961-3. 2012
    ..Reliable quantification of both intracerebral hemorrhage and intraventricular hemorrhage (IVH) volume is important for hemostatic trials. We evaluated the reliability of computer-assisted planimetric volume measurements of IVH...
  30. pmc The relationship between indoleamine 2,3-dioxygenase activity and post-stroke cognitive impairment
    Allison B Gold
    Neuropsychopharmacology Research Group, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
    J Neuroinflammation 8:17. 2011
    ....
  31. doi request reprint Traumatic stapes fracture with rotation and subluxation into the vestibule and pneumolabyrinth
    Ash Ederies
    Division of Neuroradiology, Department of Medical Imaging, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
    Laryngoscope 119:1195-7. 2009
    ..When this does occur, there is usually simple footplate depression. This case demonstrates a rare stapes fracture with pneumolabyrinth and >90 degrees stapes rotation, then subluxation into the vestibule. Laryngoscope, 2009...
  32. ncbi request reprint CT angiography "spot sign" predicts hematoma expansion in acute intracerebral hemorrhage
    Ryan Wada
    Division of Neuroradiology, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
    Stroke 38:1257-62. 2007
    ..We hypothesized that the presence of tiny, enhancing foci ("spot sign") within acute hematomas is associated with hematoma expansion...
  33. doi request reprint Severe hypomagnesemia associated with reversible subacute ataxia and cerebellar hyperintensities on MRI
    Mark I Boulos
    Department of Medicine Neurology, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
    Neurologist 18:223-5. 2012
    ..In this report we document isolated, reversible cerebellar findings with the corresponding neuroimaging correlates associated with critically low magnesium levels...