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  • photo of neuroradiologist john karis


    John Karis, MD


    John P. Karis, MD, is director of MRI and brain imaging for the Department of Neuroradiology at Barrow Neurological Institute, Dignity Health St. Joseph’s Hospital and MedicalCenter. Dr. Karis is board certified by the American Board of Radiology.

    Dr. Karis is a member of the Radiology Society of North America, the American Society of Neuroradiology, the American College of Radiology, and the International Society of Magnetic Resonance in Medicine.

    Dr. Karis received his medical degree from Duke University in Durham, N.C. and completed his internship from North Carolina Memorial Hospital. He completed his residency at Duke University where he became Chief Resident and completed his fellowship at Barrow Neurological Institute.

    For more information please call (602) 406-7783.

    Education & Training
    • Fellowship, Barrow Neurological Institute, Neuroradiology, 1992-1994
    • Residency, Duke University, Diagnostic Radiology, 1988-1992
    • Internship, North Carolina Memorial Hospital, 1987-1988
    • MD, Duke University, 1987
    • BSE, Princeton University, Electrical Engineering, Computer Science, 1983
    Professional Memberships
    • American College of Radiology
    • American Society of Neuroradiology
    • International Society of Magnetic Resonance in Medicine
    • Radiology Society of North America
    • Western Neuroradiology Society
    Honors and Awards
    • National Science and Humanities Scholarship Winner
    • Westinghouse Science Talent Search Scholarship Winner
    • Princeton University John Ogden Bigelow Prize Winner in Electrical Engineering
    • American Society of Neuroradiology Research Berlex Fellowship Grant Winner
    Selected Publications

    1. Li Z, Wang D, Robison RK, Zwart NR, Schar M, Karis JP, Pipe JG. Sliding-slab three-dimensional TSE imaging with a spiral-In/Out readout. Magn Reson Med. Mar 7 2015.

    2. Li Z, Schar M, Wang D, Zwart NR, Madhuranthakam AJ, Karis JP, Pipe JG. Arterial spin labeled perfusion imaging using three-dimensional turbo spin echo with a distributed spiral-in/out trajectory. Magn Reson Med. Mar 5 2015.

    3. Pipe JG, Gibbs WN, Li Z, Karis JP, Schar M, Zwart NR. Revised motion estimation algorithm for PROPELLER MRI. Magn Reson Med. Aug 2014;72(2):430-437.

    4. Lieberman A, Dhall R, Salins N, Sadreddin A, Moguel-Cobos G, Karis J, Krishnamurthi N. Finger displacement in Parkinson disease: up? down? sideways? Int J Neurosci. May 2014;124(5):339-343.

    5. Chang Y, Pipe JG, Karis JP, Gibbs WN, Zwart NR, Schar M. The effects of SENSE on PROPELLER imaging. Magn Reson Med. Dec 17 2014.

    6. Hu LS, Eschbacher JM, Heiserman JE, Dueck AC, Shapiro WR, Liu S, Karis JP, Smith KA, Coons SW, Nakaji P, Spetzler RF, Feuerstein BG, Debbins J, Baxter LC. Reevaluating the imaging definition of tumor progression: perfusion MRI quantifies recurrent glioblastoma tumor fraction, pseudoprogression, and radiation necrosis to predict survival. Neuro Oncol. Jul 2012;14(7):919-930.

    7. Hu LS, Eschbacher JM, Dueck AC, Heiserman JE, Liu S, Karis JP, Smith KA, Shapiro WR, Pinnaduwage DS, Coons SW, Nakaji P, Debbins J, Feuerstein BG, Baxter LC. Correlations between perfusion MR imaging cerebral blood volume, microvessel quantification, and clinical outcome using stereotactic analysis in recurrent high-grade glioma. AJNR Am J Neuroradiol. Jan 2012;33(1):69-76.

    8. Schraml FV, Karis J, Mullen BR. Case of the month. The uncontrollable shaking arm. Br J Radiol. Dec 2011;84(1008):1153-1155.

    9. Li Z, Pipe JG, Aboussouan E, Karis JP, Huo D. A parallel imaging technique using mutual calibration for split-blade diffusion-weighted PROPELLER. Magn Reson Med. Mar 2011;65(3):638-644.

    10. Linstrom NJ, Heiserman JE, Kortman KE, Crawford NR, Baek S, Anderson RL, Pitt AM, Karis JP, Ross JS, Lekovic GP, Dean BL. Anatomical and biomechanical analyses of the unique and consistent locations of sacral insufficiency fractures. Spine (Phila Pa 1976). Feb 15 2009;34(4):309-315.

    About Barrow Neurological Institute
    Since our doors opened as a regional specialty center in 1962, we have grown into one of the premier destinations in the world for neurology and neurosurgery. Our experienced, highly skilled, and comprehensive team of neurological specialists can provide you with a complete spectrum of care–from diagnosis through outpatient neurorehabilitation–under one roof. Barrow Neurological Institute: Discover. Educate. Heal.