At a glance
ClinicalIndex Comparison RecordN/ACompleted· 558 enrolled
Drug / intervention
Close focus HD NBI Colonoscopy Systemdevice
Likely dose
Not stated in record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.
Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.
Real Time Colorectal Polyp Diagnosis in Colorectal Cancer Screening Using Close Focus High Definition Narrow Band Imaging Colonoscopy Compared to Conventional Histopathology Diagnosis - the VALID (Veterans Affairs Lesion Interpretation and Diagnosis) Colonoscopy Study
In Brief
A clinical study evaluating Close focus HD NBI Colonoscopy System for Colorectal Neoplasm and Colonic Polyps. Completed, enrolled 558 participants across 2 sites.
Detailed Summary
The investigators hypothesize that high definition colonoscopy with close focus narrow band imaging features has a high diagnostic accuracy for colorectal polyp histology, and can replace formal pathologic assessment in cases of high diagnostic confidence.
Study Details
Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
ConditionsColorectal Neoplasm, Colonic Polyps
CountriesUnited States
CollaboratorsKansas City Veteran Affairs Medical Center
Timeline
N/ACompletedFinished
2011201220132014201520162017201820192020202120222023202420252026
First PostedFeb 2011
Enrollment StartMar 2011
Primary CompletionJun 2015
Study CompletionOct 2015
TodayJul 2026
First PostedFeb 2, 2011
Enrollment StartMar 1, 2011
Primary CompletionJun 1, 2015
Study CompletionOct 1, 2015
TodayJul 2, 2026
Enrollment to primary: 4.3 yearsPosted 15.4 years ago
Interventions
Close focus HD NBI Colonoscopy Systemdevice
Technically improved colonoscope with close focus high definition narrow band imaging. Optical specifications include a 2mm near field focal depth.