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Related Concept Videos

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This lesson explores three gastrointestinal imaging techniques: radionuclide testing, colonic transit studies, and virtual colonoscopy.
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The colon, or large intestine, is the final segment of the digestive system. Its primary functions include absorbing water and vitamins produced by gut bacteria and transforming waste from liquid to solid to form stool. In adults, the large intestine is approximately 5 feet long and consists of four main sections:
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Sigmoidoscopy and laparoscopy are distinct medical procedures that enable physicians to internally inspect different parts of the GI tract. Although they serve different purposes, each is essential for diagnosing and, in some cases, treating various medical conditions.
Sigmoidoscopy
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Capsule endoscopy, or wireless or video capsule endoscopy, is a diagnostic procedure for examining the entire gastrointestinal tract. Patients swallow a capsule about the size of a vitamin tablet. The capsule is equipped with a transmitter, a battery, an LED light source, and a color video camera to capture images throughout the gastrointestinal tract. This procedure is particularly useful for diagnosing conditions such as Crohn's disease, ulcerative colitis, tumors, polyps, ulcers,...
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Endoscopic Procedures I: Esophagogastroduodenoscopy01:29

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An Esophagogastroduodenoscopy (EGD) is a diagnostic procedure in which an endoscopist uses a flexible, lighted endoscope to visualize the upper gastrointestinal (GI) tract. The procedure includes visualizing the oropharynx, esophagus, stomach, and the first part of the small intestine, the duodenum.
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Lower GI Series: Barium Enema01:23

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A Barium Enema, or a lower GI series, is a specialized radiographic examination designed to visualize the lower gastrointestinal tract, specifically the colon and rectum. This procedure is instrumental in diagnosing various conditions such as colorectal cancer, polyps, diverticulosis, and inflammatory bowel disease.
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Related Experiment Video

Updated: Jul 18, 2025

Structured Approach to Colonoscopy Technique Optimization: A Single-Center Experience with Novice Endoscopists
03:44

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Image enhanced colonoscopy: updates and prospects-a review.

Dariush Shahsavari1, Muhammad Waqar1, Viveksandeep Thoguluva Chandrasekar1

  • 1Augusta University Medical Center, Augusta, GA, USA.

Translational Gastroenterology and Hepatology
|August 21, 2023
PubMed
Summary
This summary is machine-generated.

Advanced imaging technologies like NBI enhance colonoscopy for colorectal cancer detection. Newer innovations in image-enhanced endoscopy (IEE) aim to further improve polyp detection and characterization for better patient outcomes.

Keywords:
Image-enhanced colonoscopyadenoma detection rate (ADR)endoscytoscopyinflammatory bowel disease (IBD)polyp characterization and classification

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Area of Science:

  • Gastroenterology
  • Medical Imaging
  • Endoscopy

Background:

  • Colonoscopy is crucial for colorectal cancer prevention and identification.
  • Image-enhanced endoscopy (IEE) significantly aids real-time diagnosis during colonoscopy.
  • Technological evolution in endoscopic imaging, from early chromoendoscopy to modern IEE, continuously improves visualization.

Purpose of the Study:

  • To review advancements in image-enhanced endoscopy (IEE) for colonoscopy.
  • To highlight the role of IEE in improving adenoma detection rate (ADR) and polyp characterization.
  • To discuss emerging IEE technologies and their potential impact on colorectal cancer screening.

Main Methods:

  • Review of current and emerging image-enhanced endoscopy (IEE) technologies.
  • Comparison of different IEE modalities, including Narrow Band Imaging (NBI), autofluorescence imaging (AFI), and confocal laser endomicroscopy (CLE).
  • Discussion of technological advancements from dye-based chromoendoscopy to AI-driven computer-aided detection (CAD).

Main Results:

  • Narrow Band Imaging (NBI) demonstrates a higher adenoma detection rate (ADR) than white light endoscopy.
  • Confocal laser endomicroscopy (CLE) offers high sensitivity and specificity for polyp detection and characterization.
  • Various IEE technologies (BLI, LCI, i-SCAN, AFI) show promise in enhancing ADR and polyp analysis.

Conclusions:

  • IEE technologies are vital for improving colorectal cancer detection and prevention during colonoscopy.
  • Narrow Band Imaging (NBI) and Confocal Laser Endomicroscopy (CLE) are effective IEE tools.
  • Emerging technologies, including AI-based CAD, are expected to further refine polyp detection and characterization.