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Comparison Between HD+ Endoscopy and Standard Videoendoscopy in Screening Colonoscopy

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified February 2008 by Johannes Gutenberg University Mainz.
Recruitment status was:  Enrolling by invitation
ClinicalTrials.gov Identifier:
First Posted: November 18, 2008
Last Update Posted: November 18, 2008
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by:
Johannes Gutenberg University Mainz
Colonoscopy is the accepted gold standard for screening of colorectal cancer. However, small and flat neoplastic lesions might be overlooked with standard video endoscopes. The new available EPKi system (Pentax, Japan) enables with HD+ imaging resolution above HDTV standard. Aim of the study was to test the efficacy of HD+ colonoscopy alone and in conjunction with I-Scan (newly developed post processing digital filter)in comparison to standard videoendoscopy

Polyps Neoplasia

Study Type: Observational
Study Design: Observational Model: Case Control
Time Perspective: Prospective

Resource links provided by NLM:

Further study details as provided by Johannes Gutenberg University Mainz:

Estimated Enrollment: 200
Study Start Date: February 2008
screening colonoscopy with HD+ endoscopes
screening colonoscopy with standardvideoendoscopes


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Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
Consecutive patients scheduled for screening colonoscopy were examined using HD+ colonosccopes and standardendoscopes.

Inclusion Criteria:

  • Consecutive patients scheduled for screening colonoscopy

Exclusion Criteria:

  • Inflammatory bowel disease
  • Cancer
  • Pregnancy
  • Inability to obtain informed consent
  • Prothrombin time < 50% of control
  • Partial thromboplastin time > 50 seconds
  Contacts and Locations
No Contacts or Locations Provided
  More Information

Responsible Party: Hoffman Arthur
ClinicalTrials.gov Identifier: NCT00792649     History of Changes
Other Study ID Numbers: 837.386.07
First Submitted: November 17, 2008
First Posted: November 18, 2008
Last Update Posted: November 18, 2008
Last Verified: February 2008