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Photo of Dr. Karen Horton

Karen Margaret Horton, M.D.

Executive Vice Chair of Radiology
Professor of Radiology and Radiological Science

Female

Appointment Phone

443-997-7237

Main Location

Johns Hopkins Outpatient Center

Out-of-State & International Patients +
Out of State Patients

Call 410-464-6641 (8a.m. to 6p.m., EST, Mon-Fri)

Learn more about our out-of-state patient services »

International Patients

Call +1-410-502-7683 (7a.m. to 6p.m., EST, Mon-Fri)

Learn more about our international patient services »

Titles

  • Executive Vice Chair of Radiology
  • Interim Director of Radiology
  • Professor of Radiology and Radiological Science

Centers & Institutes

Departments

Locations

Johns Hopkins Outpatient Center

601 N. Caroline Street
Baltimore, MD 21287 map
Phone: 410-955-3222

The Johns Hopkins Hospital

600 N. Wolfe Street
Sheikh Zayed Tower
Baltimore, MD 21287 map
Phone: 410-955-3222

Expertise

Computed Tomography, Diagnostic Radiology, Virtual Colonoscopy

Research Interests

CT Scan; CT Imaging; 3-D Computed Tomography

Biography

Dr. Karen Horton is the Interim Director, Executive Vice Chair and a Professor in the Johns Hopkins Medicine Department of Radiology and Radiological Science. Her areas of clinical expertise include general and diagnostic radiology.

Dr. Karen Horton was the Vice Chair of Operations in 2014 as well as the Director of Imaging at Johns Hopkins Bayview Medical Center 2013-2014. Dr. Horton was the Radiology Residency Director 2009-2014.

Dr. Horton received her medical degree from the Johns Hopkins University School of Medicine. She completed a residency in diagnostic radiology and a fellowship in body imaging at the Johns Hopkins University School of Medicine. She joined the Johns Hopkins faculty in 1998.

Her research interests include the use of 3-D computed tomography (CT) imaging, particularly for imaging the pancreas and pancreatic tumors.

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    Additional Information

  • Education +

    Degrees

    • Johns Hopkins University School of Medicine / MD (1992)

    Residencies

    • Johns Hopkins University School of Medicine / Radiology (1997)

    Fellowships

    • Johns Hopkins University School of Medicine / Radiology (1998)

    Certifications

    • American Board of Radiology / Diagnostic Radiology (1997)
  • Research & Publications +

    Research Summary

    Dr. Horton's research focuses on the use of 3-D computed tomography (CT) imaging, particularly for imaging the pancreas and pancreatic tumors. She has co-authored numerous books and articles on the matter and remains an active participant in research studies related to CT imaging.

    Clinical Trials:

    • National CT Colonography Trial
    • National Lung Cancer Screening Trial
    • Screening for Early Pancreatic Neoplasia (CAPS III)
    • Mechanisms and Treatment of COPD Progression

    Selected Publications View all on PubMed

    Raman SP, Horton KM, Fisman EK. "MCDT Evaluation of Ureteral Tumors: Advantages of 3D Reconstruction and Volume Visualization." American Journal of Roentgenology. 2013 Dec;201(6):1239-47. doi: 10.2214/AJR.13.10880.

    Raman SP, Horton KM, Fisman EK. "MCDT and CT angiography evaluation of rectal bleeding: the role of volume visualization." American Journal of Roentgenology. 2013 Sep;201(3):589-97. doi: 10.2214/AJR.12.10357.

    Raman SP, Horton KM, Fisman EK. "Computed tomography of Crohn's disease: The role of three dimensional technique." World Journal of Radiology. 2013 May 28;5(5):193-201. doi: 10.4329/wjr.v5.i5.193.

    Raman SP, Horton KM, Cameron JL, Fishman EK. "CT after pancreaticoduodenectomy: spectrum of normal findings and complications." American Journal of Roentgenology. 2013 Jul;201(1):2-13. doi: 10.2214/AJR.12.9647. Review.

    Dalal PS, Raman SP, Horton KM, Fishman EK. "Portal vein aneurysms: imaging manifestations and clinical significance." Emerg Radiology. 2013 Oct;20(5):453-7. doi: 10.1007/s10140-013-1131-y. Epub 2013 May 23.

  • Academic Affiliations & Courses +

    Graduate Program Affiliation

    Radiology Residency Program Director (2009 - 2014)
    40 residents in program
    Voted Best Radiology Residency by Aunt Minnie in 2012
    Doximity Top Radiology Residency Program - #4 in 2014

    Director, Cross-Sectional Imaging Fellowship (2000 - 2009)

    Director, Virtual Colonoscopy Program (2005 - present)

    3D Imaging Training Program
    Started and maintain 3DCT education rotation for residents and fellows which includes instruction in 3D volume rendering, virtual colonoscopy and CT cardiac imaging.

  • Activities & Honors +

    Honors

    • Certificate of Merit, RSNA Annual Meeting 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2009
    • Bronze Medal, ARRS Annual Meeting, 2000
    • Bronze Medal, ARRS Annual Meeting, 2001
    • Magna Cum Laude, RSNA Annual Meeting, 2002
    • Excellence in Design, RSNA Annual Meeting, 2008

    Memberships

    • American Board of Radiology, 1997
    • American Association of Women Radiologists (AAWR)
    • Society of Computed Body Tomography and Magnetic Resonance Imaging, 2002

      Fellow Membership Committee 2008 - present

    • Society of Gastrointestinal Radiologists
    • Radiological Society of North America (RSNA), 1993

      Scientific Awards Committee 2003-2010 and Radiographics Selection Committee 2004-2010

    • American Roentgen Ray Society (ARRS), 1993

      SAM Committee 2005-2006 and CME Course Committee 2006 - 2009

    • American Roentgen Ray Society (ARRS), 2005 - 2006

      SAM Committee

    Professional Activities

    • Editor, Critical Reviews in Computed Tomography, 2001 - 2005
    • Reviewer, American Journal of Roentgenology, 1999
    • Reviewer, Journal of Computer Assisted Tomography, 2001
    • Reviewer, RadioGraphics, 2001
    • Oral Boards Examiner, American Board of Radiology, 2005 - 2008
  • Videos & Media +

    Lectures and Presentations

    MDCT Evaluation after Pancreatic Surgery
    Lecture , 2012 RSNA Scientific Assembly and Annual Meeting
    Radiological Society of North America

    Virtual Colonoscopy; MDCT of the Acute Abdomen, Small Bowel Neoplasms and Spleen
    Lecture, 2011
    Radiologic Society of South Africa

    Virtual Colonoscopy; MDCT of Pancreatic Tumors
    Lecture, 2011
    University of Michigan School of Medicine

    MDCT Imaging of the Pancreas, Stomach and PE; Virtual Colonoscopy
    Lecture, 2010
    Chinese Medical Society

    MDCT of the Mesenteric Vessels
    Lecture , 2009 RSNA Scientific Assembly and Annual Meeting
    Radiological Society of North America

    Virtual Colonoscopy Techniques and CTC Interpretation
    Course Director, 2008 , ARRS Course on Virtual Colonoscopy
    American Academy of Physician Assistants

    MDCT Staging of Gastric Malignancies
    Lecture, 2007
    European College of Radiology (ECR)

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