Robert A. Zimmerman, MD

Areas of Expertise: Pediatric neuroradiology
Locations: Main Campus
Appointments and Referrals: 1-800-TRY-CHOP (1-800-879-2467)

  • Education and Training

    Medical School

    MD - Georgetown University School of Medicine, Washington, DC


    Radiology - Hospital of the University of Pennsylvania, Philadelphia, PA


    Special Procedures - Hospital of the University of Pennsylvania, Philadelphia, PA

    Board Certification


  • Titles and Academic Titles

    Chief, Neuroradiology Division/MRI

    Professor of Radiology, Perelman School of Medicine at the University of Pennsylvania

  • Centers and Programs
  • Publications



    Kwiatkowski JL, Zimmerman RA, Pollock AN, Seto W, Smith-Whitley K, Shults J, Blackwood-Chirchir A, Ohene-Frempong K. Silent infarcts in young children with sickle cell disease. Br J Haematol. 2009 Aug;146(3):300-5. Epub 2009 Jun 4. Read the abstract »

    Mittal MK, Zimmerman RA. Meningitis and epidural abscess related to pansinusitis. Pediatr Emerg Care. 2009 Apr;25(4):267-8. Read the abstract »

    Licht DJ, Shera DM, Clancy RR, Wernovsky G, Montenegro LM, Nocolson SC, Zimmerman RA, Spray TL, Gaynor JW, Vossough A. Brain maturation is delayed in infants with complex congenital heart defects. J Thorac Cardiovasc Surg. 2009 Mar;137(3):529-36; discussion 536-7. Read the abstract »

    Petit CJ, Rome JJ, Wernovsky G, Mason SE, Shera DM, Nicolson SC, Montenegro LM, Tabbutt S, Zimmerman RA, Licht DJ. Preoperative brain injury in transposition of the great arteries is associated with oxygenation and time to surgery, not balloon atrial septostomy. Circulation. 2009 Feb 10;119(5):709-716. Epub 2009 Jan 26. Read the abstract »

    Chen J, Licht DJ, Smith SE, Agner SC, Mason S, Wang S, Silvestre DW, Detre JA, Zimmerman RA, Ichord RN, Wang J. Arterial spin labeling perfusion MRI in pediatric arterial ischemic stroke: Initial experiences. J Magn Reson Imaging. 2009 Feb;29(2):282-290. Read the abstract »

    Yoon U, Fonov VS, Perusse D, Evans AC; Brain Development Cooperative Group. The effect of template choice on morphometric analysis of pediatric brain data. Neuroimage. 2009 Apr 15;45(3):769-77. Epub 2009 Jan 6. Read the abstract »

    Samanta B, Bird GL, Kuijpers M, Zimmerman RA, Jarvik GP, Wernovsky G, Clancy RR, Licht DJ, Gaynor JW, Nataraj C. Prediction of periventricular leukomalacia. Part II: selection of hemodynamic features using computational intelligence. Artif Intell Med. 2009 Jul;46(3):217-31. Epub 2009 Jan 21. Read the abstract »

    Samanta B, Bird GL, Kuijpers M, Zimmerman RA, Jarvik GP, Wernovsky G, Clancy RR, Licht DJ, Gaynor JW, Nataraj C. Prediction of Periventricular Leukomalacia. Part I: Selection of Hemodynamic Features Using Logistic Regression and Decision Tree Algorithms. Artif Intell Med. 2009 Jul;46(3);201-15. Epub 2009 Jan 21. Read the abstract »


    Schwartz ES, Dlugos DJ, Storm PB, Dell J, Magee R, Flynn TB, Zarnow DM, Zimmerman RA, Roberts TP. Magnetoencephalography for pediatric epilepsy: how we do it. AJNR Am J Neuroradiol. 2008 May;29(5):832-7. Epub 2008 Feb 13. Read the abstract »

    Vossough A, Zimmerman RA, Bilaniuk LT, Schwartz EM. Imaging findings of neonatal herpes simplex virus type 2 encephalitis. Neuroradiology. 2008 Apr;50(4):355-66. Epub 2008 Feb 2. Read the abstract »

    Pierson TM, Zimmerman RA, Tennekoon GI, Bonnemann CG. Mega-corpus callosum, polymicrogyria, and psychomotor retardation: confirmation of a syndromic entity. Neuropediatrics. 2008 Apr;39(2):123-7. Read the abstract »

    Beslow LA, Ichord RN, Zimmerman RA, Smith SE, Licht DJ. Role of diffusion MRI in diagnosis of spinal cord infarction in children. Neuropediatrics. 2008 Jun;39(3):188-91. Read the abstract »

    McGuire JL, Beslow LA, Finkel RS, Zimmerman RA, Henretig FM. A teenager with focal weakness. Pediatr Emerg Care. 2008 Dec;24(12):875-879. No abstract available.

    Finlay JL, Dhall G, Boyett JM, Dunkel IJ, Gardner SL, Zimmerman RA, Wallace D, Pollack IF, Packer RJ, Children’s Cancer Group. Myeloablative chemotherapy with autologous bone marrow rescue in children and adolescents with recurrent malignant astrocytoma: outcome compared with conventional chemotherapy: a report from the Children’s Oncology Group. Pediatr Blood Cancer. 2008 Dec;51:806-11. Read the abstract »


    Lauria MR, Barthold JC, Zimmerman RA, Turrentine MA. Pathologic uterine ring associated with fetal head trauma and subsequent cerebral palsy. Obstet Gynecol. 2007 Feb;109(2 Pt2):495-7 Read the abstract »

    Zimmerman RA, Bilaniuk LT, Farina L. Non-accidental brain trauma in infants: diffusion imaging, contributions to understanding the injury process. J Neuroradiol. 2007 May;34(2):109-114. Read the abstract »

    Zimmerman RA, Bilaniuk LT. 3T magnetic resonance arteriography in pediatric cerebrovascular disease. J Neuroradiol. 2007 May;34(2):95-100. Read the abstract »

    Armstrong GT, Localio AR, Feygin T, Bilaniuk L, Phillips PC, Fisher MJ, Strom BL, Zimmerman R. Defining Optic Nerve Tortuosity. AJNR. 2007;28(4):666-71.

    Niebanck AE, Pollock AN, Smith-Whitley K, Raffini LJ, Zimmerman RA, Ohene-Frempong K, Kwiatkowski JL. Headache in children with sickle cell disease: prevalence and associated factors. J Pediatr. 2007 Jul;151:67-72, 72.e1. Read the abstract »


    Posters and Presentations


    Pediatric Brain Tumors Updated, Neonatal CNS Infection, Neonatal Hypoxic Ischemic Brain Injury, Genetic CNS White Matter Disease, 2nd Arab Radiology Congress, Alexandria, Egypt, April 21-24, 2009.


    Dynamic Gadolinium Time-Resolved MR Angiography in Pediatric Cerebrovascular Disease. American Society of Neuroradiology, New Orleans, June 1-5, 2008.

    Tools for Determining the Etiology and Timing of Infant Brain Injury. Boston University School of Medicine, 24th Annual Conference on Obstetrics, Gynecology, Perinatal Medicine, Neonatology and the Law, Boston, June 17, 2008.

    Advantages of 3T Imaging in Pediatric Neuroradiology. Eastern Neuroradiologic Society, Farmington, PA, August 21-23, 2008.

    Genetic White Matter, Fetal Imaging of Brain and Spine and Impact on Intrauterine Treatment. European Society of Neuroradiology, Cracow, Poland, September 17-21, 2008.


    Neuroimaging of Pediatric Stroke. Multidisciplinary Conference on the Neurologic Patient, Jersey Shore University Medical Center, October 21, 2008.

    Hypoxic Ischemia, Genetic White Matter, 38th Congress of Polish Medical Society, Bydgoszcz, Poland, May 23-25, 2007.

    Fetal Perinatal/Infant Infections. American Society of Neuroradiology, Chicago, IL, June 10-15, 2007.

    Advantages of 3T Imaging in Pediatric Neuroradiology. Nineteenth Annual Meeting of the Eastern Neuroradiological Society, Stowe, VT, August 23-25, 2007.

    CNS Infection: Fetal, Perinatal, Neonatal; Fetal Hydrocephalus; Chiari II Malformation: The impact of fetal surgery on prenatal and postnatal brain MRI: data and research from fetal surgery center.

    3rd International Multi-Disciplinary Symposium on Fetal and Congenital Malformations, Tel-Aviv, Israel, September 5-7, 2007.

  • Editorial and Academic Positions

    Editorial positions

    Editor-in-chief, USA, Neuroradiology, 1989 — present
    Reviewer of scientific articles
    Annals of Neurology, Cancer
    American Journal of Neuroradiology
    American Journal of Roentgenology
    Medical and Pediatric Oncology
    Pediatric Emergency Medicine
    Pediatric Radiology