Padraig (P. Pearse) P. Morris, M.B., B.Ch.

  1. Psychiatrist
  2. Radiologist


  1. De Maria L, De Sanctis P, Tollefson M, Mardini S, Garrity JA, Morris PP, Bendel E, Brinjikji W. Sclerotherapy for low-flow vascular malformations of the orbital and periocular regions: Systematic review and meta-analysis. Surv Ophthalmol. 2020 Jan - Feb; 65 (1):41-47 Epub 2019 Aug 16
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  2. Asnafi S, Morris PP, Sechi E, Pittock SJ, Weinshenker BG, Palace J, Messina S, Flanagan EP. The frequency of longitudinally extensive transverse myelitis in MS: A population-based study. Mult Scler Relat Disord. 2020 Jan; 37:101487 Epub 2019 Oct 31
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  3. Kim DK, Brinjikji W, Morris PP, Diehn FE, Lehman VT, Liebo GB, Morris JM, Verdoorn JT, Cutsforth-Gregory JK, Farb RI, Benson JC, Carr CM. Lateral Decubitus Digital Subtraction Myelography: Tips, Tricks, and Pitfalls. AJNR Am J Neuroradiol. 2020 Jan; 41 (1):21-28 Epub 2019 Dec 19
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  4. Sechi E, Morris PP, McKeon A, Pittock SJ, Hinson SR, Weinshenker BG, Aksamit AJ, Krecke KN, Kaufmann TJ, Jolliffe EA, Zalewski NL, Zekeridou A, Wingerchuk DM, Jitprapaikulsan J, Flanagan EP. Glial fibrillary acidic protein IgG related myelitis: characterisation and comparison with aquaporin-4-IgG myelitis. J Neurol Neurosurg Psychiatry 2019 Apr; 90 (4):488-490 Epub 2018 July 21
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  5. Dubey D, Pittock SJ, Krecke KN, Morris PP, Sechi E, Zalewski NL, Weinshenker BG, Shosha E, Lucchinetti CF, Fryer JP, Lopez-Chiriboga AS, Chen JC, Jitprapaikulsan J, McKeon A, Gadoth A, Keegan BM, Tillema JM, Naddaf E, Patterson MC, Messacar K, Tyler KL, Flanagan EP. Clinical, Radiologic, and Prognostic Features of Myelitis Associated With Myelin Oligodendrocyte Glycoprotein Autoantibody. JAMA Neurol. 2019 Mar 1; 76 (3):301-309
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  6. Johnson DR, Guerin JB, Ruff MW, Fang S, Hunt CH, Morris JM, Morris PP, Pearse Morris P, Kaufmann TJ. Glioma response assessment: Classic pitfalls, novel confounders, and emerging imaging tools. Br J Radiol. 2019 Feb; 92 (1094):20180730 Epub 2018 Nov 14
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  7. Brinjikji W, Cloft HJ, Lanzino G, Rangel-Castilla L, Morris PP. Transarterial embolization of an internal maxillary artery arteriovenous fistula presenting with pulsatile tinnitus Neurosurgical Focus. 2019 Jan; 46 (Suppl 1):V6
  8. Chen JJ, Aksamit AJ, McKeon A, Pittock SJ, Weinshenker BG, Leavitt JA, Morris PP, Flanagan EP. Optic Disc Edema in Glial Fibrillary Acidic Protein Autoantibody-Positive Meningoencephalitis. J Neuroophthalmol. 2018 Sep; 38 (3):276-281
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  9. Morris PP, Geer CP, Singh J, Brinjikji W, Carter RE. Radiation dose reduction during neuroendovascular procedures. J Neurointerv Surg. 2018 May; 10 (5):481-486 Epub 2017 Sept 23
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  10. Morris PP, Lachman N, Black DF, Carter RA, Port J, Campeau N. Increased Curvature of the Tentorium Cerebelli in Idiopathic Intracranial Hypertension. AJNR Am J Neuroradiol. 2017 Sep; 38 (9):1789-1793 Epub 2017 June 29
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  11. Brinjikji W, Graffeo CS, Perry A, Zimmerman T, Janus JR, Morris PP, Cascino GD, Lanzino G. Moving target: transient rotational stenosis precipitating jugular bow hunter's syndrome. J Neurointerv Surg. 2017 Jul; 9 (7):e28 Epub 2017 Jan 06
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  12. Morris PP, Black DF, Port J, Campeau N. Transverse Sinus Stenosis Is the Most Sensitive MR Imaging Correlate of Idiopathic Intracranial Hypertension. AJNR Am J Neuroradiol. 2017 Mar; 38 (3):471-477 Epub 2017 Jan 19
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  13. Zalewski NL, Morris PP, Weinshenker BG, Lucchinetti CF, Guo Y, Pittock SJ, Krecke KN, Kaufmann TJ, Wingerchuk DM, Kumar N, Flanagan EP. Ring-enhancing spinal cord lesions in neuromyelitis optica spectrum disorders. J Neurol Neurosurg Psychiatry. 2017 Mar; 88 (3):218-225 Epub 2016 Dec 02
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  14. Flanagan EP, Hinson SR, Lennon VA, Fang B, Aksamit AJ, Morris PP, Basal E, Honorat JA, Alfugham NB, Linnoila JJ, Weinshenker BG, Pittock SJ, McKeon A. Glial fibrillary acidic protein immunoglobulin G as biomarker of autoimmune astrocytopathy: Analysis of 102 patients. Ann Neurol. 2017 Feb; 81: (2)298-309.
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  15. Flanagan EP, Hinson SR, Lennon VA, Fang B, Aksamit AJ, Morris PP, Basal E, Honorat JA, Alfugham NB, Linnoila JJ, Weinshenker BG, Pittock SJ, McKeon A. Glial fibrillary acidic protein immunoglobulin G as biomarker of autoimmune astrocytopathy: Analysis of 102 patients Annals of Neurology. 2017; 81: (2)298-309.
  16. Brinjikji W, Graffeo CS, Perry A, Zimmerman T, Janus JR, Morris PP, Cascino GD, Lanzino G. Moving target: transient rotational stenosis precipitating jugular bow hunter's syndrome. BMJ Case Rep. 2016 Dec 20; 2016
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  17. Nguyen QD, Perry A, Graffeo CS, Nesvick CL, Raghunathan A, Jentoft ME, O'Neill BP, Morris PP, Morris JM, Van Gompel JJ. Gliosarcoma with Primary Skull Base Invasion. Case Rep Radiol. 2016; 2016:1762195 Epub 2016 Dec 08
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  18. Koonce JD, Neal MT, Heck D, Wilson JA, Morris PP. Angiographic assessment of rotational vertebral artery syndrome (Bow Hunter's Syndrome): A case series. Neurographics.2013;3(2)100-7.
  19. William TJ, Bourland D, Couture DE, McMullen KP, Tatter SB, Morris PP. Definitive Treatment of Vein of Galen Aneursmal Malformation with Sterotactic Radiosurgery. Report of Two Cases. 2013.
  20. Edwards L, Kota G, Morris PP. The Sea Anchor Technique: A Novel Method to Aid in Stent-Assisted Embolization of Giant Cerebral Aneurysms. Journal of Neurointerventional Surgery. 2012.
  21. Singh J, Morris PP. Superficial Temporal Vein: Route to Embolization of Cavernous Dural Fistula. Journal of Neuroimaging. 2011:21(3):251-4.
  22. Lyders E, Whitlow CT, Baker MD, Morris PP. Imaging and Treatment of Sacral Insufficiency Fractures: A Review. American Journal of Neuroradiology. 2010:31(2):201-10.
  23. Whitlow C, Berry J, Geer C, Mattern C, Yazdani S, Lalli J, Claus R, Challa V, Morris PP. Endovascular Histologic Effects of Ultra-Thin Gold or Vitronectin Coated Platinum Aneurysm Coil in a Rodent Arterial Occlusion Model: A Preliminary Investigation. American Journal of Neuroradiology. 2009:30:85-90.
  24. Cohen SD, Goins JL, Butler SG, Morris PP, Browne JD. Dural Arteriovenous Fistula: Diagnosis, Treatment, and Outcomes. Laryngoscope. 2009:119(2):293-7.
  25. Steven EA, Powers AK, Morris PP, Wilson JA. Occult Dural Arteriovenous Fistula Causing Rapidly Progressive Conus Medularis Syndrome and Paraplegia After Lumber Microdiscectomy. Spine Journal. 2009:9(9):e8-12.
  26. Lyders E, Morris PP. A Case of Spinal Cord Infarction Following Lumbar Transforaminal Epidural Steroid Injection: MRI and Angiographic Findings. American Journal of Neuroradiology. 2009:30(9):1691-3.
  27. Pollock JM, Powers E, Stevens A, Sanghavi AN, Wilson JA, Morris PP. Ruptured Anterior Spinal Artery Aneurysm with Chiari 1 Malformation: A Case Report. Journal of Neuroimaging. 2008:XX:1-2.
  28. Whitlow CT, Yazdani SK, Reedy ML, Kaminsky SE, Berry JL, Morris PP. Investigating Sacroplasty: Technical Considerations and Finite Element Analysis of Polymethylmethacrylate Infusion into Cadaveric Sacrum. American Journal of Neuroradiology. 2007:28(6):1036-41.
  29. Whitlow CT, Mussat-Whitlow BJ, Mattern CWT, Baker MD, Morris PP. Sacroplasty versus Vertebroplasty: Comparable Clinical Outcomes for the Treatment of Fracture-Related Pain. American Journal of Neuroradiology. 2007:28(7):1266-70.
  30. Campbell J, Morris PP. Cerebral Vasculitis in Graft-versus-Host Disease: A Case Report. American Journal of Neuroradiology. 2005:26:654-656.
  31. Burbank NS, Morris PP. Unique Anomalous Origin of the Left Anterior Cerebral Artery. American Journal of Neuroradiology. 2005:26(10):2533-5.
  32. Given CA, Thacker IC, Baker MD, Morris PP. Fluoroscopy Fade for Embolization of Vein of Galen Malformation. American Journal of Neuroradiology. 2003:24:267-270.
  33. Pommersheim W, Huang-Hellinger F, Baker M, Morris PP. Sacroplasty: A Treatment for Sacral Insufficiency Fractures. American Journal of Neuroradiology. 2003:24:1003-1007.
  34. Rabinov JD, Hellinger FR, Morris PP, Ogilvy CS, Putman CM. Endovascular Management of Vertebrobasilar Dissecting Aneurysms. American Journal of Neuroradiology. 2003:24:1421-1428.
  35. Acharya VJ, Acharya SN, Tegeler CH, Morris PP, Meads D, O'Donovan C. Transcranial Doppler Ultrasound: A New Method of Monitoring Hemispheric Anesthetization During Intracarotid Amobarbital Procedure. Journal of Neuroimaging. 2002:12:1-5.
  36. Given CA, Morris PP. Recognition and Importance of an Infraoptic Anterior Cerebral Artery: Case Report. American Journal of Neuroradiology. 2002:23:452-454.
  37. Hamberg L, Hunter GJ, Maynard KI, Owen C, Morris PP, Putnam CM, Ogilvy C, Gonzalez RG. Functional CT Perfusion Imaging in Predicting the Extent of Cerebral Infarction from a 3-Hour Middle Cerebral Artery Occlusion in a Primate Stroke Model. American Journal of Neuroradiology. 2002:23:1013-1021.
  38. Opatowsky MJ, Browne JD, McGuirt WF, Morris PP. Endovascular Treatment of Post-Tonsillectomy Hemorrhage in Children. American Journal of Neuroradiology. 2001:22:713-716.
  39. Baker MD, Opatowsky MJ, Wilson JA, Glazier SS, Morris PP. Rheolytic Catheter and Thrombolysis of Dural Venous Sinus Thrombosis: A Case Series. Neurosurgery. 2001:48:487-494.
  40. Given CA, Huang-Hellinger FR, Baker MD, Chepuri NB, Morris PP. Congenital Absence of the Internal Carotid Artery: Case Reports and Review of the Collateral Circulation. American Journal of Neuroradiology. 2001:22:1953-59.
  41. Morris PP, Braden G. Neurointerventional Experience with an Arteriotomy Suture Device. American Journal of Neuroradiology. 1999:20:1706-09.
  42. Morris PP, Braden G, Regan J. Intracranial Deployment of Corornary Stents for Treatment of Atherosclerotic Disease. American Journal of Neuroradiology. 1999:20:1688-94.
  43. Morris PP. Interventional Neuroradiology in the Treatment of Brain Tumors. North American Clinics in Neuroradiology. 1999:9:767-778.
  44. Opatowsky M, Morris PP, Mewborne J, Regan J, Wilson J. Rapid thrombectomy of superior sagittal sinus using rheolytic catheter device. American Journal of Neuroradiology. 1999:20:414-417.
  45. Morris PP. Balloon Reconstructive Technique in Treatment of a Carotid Cavernous Fistula. American Journal of Neuroradiology. 1999:20:1107-09.
  46. Morris PP. Staged Endovascular Management of a Ruptured Intracranial Aneurysm. Interventional Neuroradiology. 1999:5:45-49.
  47. Hunter GJ, Hamberg LM, Ponzo JA, Huang-Hellinger FR, Morris PP, Rabinov FJ, Lev MH, Schaefer PW, Ogilvy CS, Schwamm L, Buonanno FS, Koroshetz WJ, Wolf GL, Gonzalez RG. Assessment of cerebral perfusion and arterial anatomy in hyperacute stroke with three-dimensional functional CT: early clinical results American Journal of Neuroradiology. 1998:19(1):29-37.
  48. Lev M, Khanduja K, Morris PP, Curtain HD. Parotid Pleomorphic Adenomas: delayed CT enhancement. American Journal of Neuroradiology. 1998:19:1835-39.
  49. Raffaele KC, Asthana S, Berardi A, Haxby JV, Morris PP, Shapiro MB, Soncrant TT. Differential response to the cholinergic agonist arecoline among different cognitive modalities in Alzheimer's disease. Neuropsychopharmacology. 1996:15:163-170.
  50. Morris PP, Choi IS. Cerebral vascular anatomy. Neuroimaging Clin North AM. 1996:6:541-560.
  51. Asthana S, Raffaele KC, Greig NH, Berardi A, Morris PP, Schapiro MB, Rapoport SI, Blackman MR, Soncrant TT. Neuroendocrine responses to intravenous infusion of arecoline in patients with Alzheimer's disease Psychoneuroendocrinology. 1995:20:623-635.
  52. Soncrant TT, Raffaele KC, Asthana S, Berardi A, Morris PP, Haxby JV. Memory improvement without toxicity during chronic low-dose intravenous arecoline in Alzheimer's disease. Psychopharmacology (Berl). 1993:112:421-427.
  53. Raffaele KC, Berardi AM, Morris PP, Asthana S, Haxby JV, Schapiro MB, Rapoport SI, Soncrant TT. Effects of acute infusion of muscarinic agonist arecoline on verbal memory and visuospatial function in dementia of Alzheimer type. Prog Neuropsychopharmacol Biol Psychiatry. 1991:15:643-648.
  54. Raffaele KC, Berardi AM, Morris PP, et al. Effects of long-term continuous infusion of the muscarinic cholinergic agonist arecoline on verbal memory in dementia of the Alzheimer type. Psychopharmacol Bull. 1991:27:315-319.
  55. Morris PP, Rapoport SI. Neuroimaging and Affective Disorder of Late Life: A Review. Can J Psychiatry. 1990:35:347-354.
  56. Rapoport SI, Morris PP. Depression and Dementia in the Elderly: Relation to Multiinfarct Disease. Dementia and Depression, Fifth Congress of the Foundation of Gerontology. 1989.