136. Virtual Colonoscopy

  1. C. J. Hawkey FMedSci3,
  2. Jaime Bosch MD, PhD4,5,
  3. Joel E. Richter MD, FACP, MACG6,7,
  4. Guadalupe Garcia-Tsao MD8,9 and
  5. Francis K. L. Chan MD10
  1. Abraham H. Dachman MD1,
  2. Ila Sethi DMRD1 and
  3. Philippe Lefere MD2

Published Online: 16 APR 2012

DOI: 10.1002/9781118321386.ch136

Textbook of Clinical Gastroenterology and Hepatology, Second Edition

Textbook of Clinical Gastroenterology and Hepatology, Second Edition

How to Cite

Dachman, A. H., Sethi, I. and Lefere, P. (2012) Virtual Colonoscopy, in Textbook of Clinical Gastroenterology and Hepatology, Second Edition (eds C. J. Hawkey, J. Bosch, J. E. Richter, G. Garcia-Tsao and F. K. L. Chan), Wiley-Blackwell, Oxford, UK. doi: 10.1002/9781118321386.ch136

Editor Information

  1. 3

    Nottingham Digestive Diseases Centre, University of Nottingham and Nottingham University Hospitals, Nottingham, UK

  2. 4

    Hepatic Hemodynamic Laboratory, Liver Unit Hospital Clínic-IDIBAPS, University of Barcelona, Spain

  3. 5

    Biomedical Research Centre Network of Hepatic and Digestive Diseases (CIBERehd), National Institute of Health Carlos III Ministry of Science and Innovation Barcelona, Spain

  4. 6

    Division of Gastroenterology and Nutrition, University of South Florida Tampa, FL, USA

  5. 7

    Joy M. Culverhouse Center for Esophageal Diseases, University of South Florida Tampa, FL, USA

  6. 8

    Section of Digestive Diseases Yale University, School of Medicine New Haven, CT, USA

  7. 9

    Veterans Affairs Connecticut Healthcare System West Haven, CT, USA

  8. 10

    Department of Medicine & Therapeutics The Chinese University of Hong Kong, Hong Kong SAR, China

Author Information

  1. 1

    Department of Radiology, The University of Chicago Medical Center, Chicago, IL, USA

  2. 2

    Department of Radiology, Stedelijk Ziekenhuis, Roeselare, Belgium

Publication History

  1. Published Online: 16 APR 2012
  2. Published Print: 20 APR 2012

ISBN Information

Print ISBN: 9781405191821

Online ISBN: 9781118321386



  • colorectal carcinoma;
  • computed tomographic (CT) colonography;
  • virtual colonoscopy;
  • computer-aided detection;
  • colonoscopy


Virtual colonoscopy (VC) or CT colonography (CTC) has gained acceptance as a method to detect colonic polyps or masses with its recent approval by the American Cancer Society and other organizations. Yet reimbursement remains controversial and limited. The technique for performing and interpreting CTC is established with minor variations. Active research is ongoingon reduced cathartic or “prepless” CTC, electronic subtraction of tagged stool, detection of flat lesions, computer-aided detection, cost-effectiveness, reporting of extracolonic findings, and ultra-low radiation dose exams. With improvement in CT scanners and computer technology, further advances in visualization tools, such as automated reporting, supine–prone comparison, and polyp volume, may also improve the technique. Ongoing trials will also help with the study of the natural history of diminutive polyps when patients opt for evaluation by follow-up examinations rather than polypectomy.