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Related Concept Videos

Endoscopic Procedures III: Video Capsule Endoscopy01:28

Endoscopic Procedures III: Video Capsule Endoscopy

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, unexplained...
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Bronchoscopy
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Related Experiment Video

Updated: May 10, 2026

Murine Endoscopy for In Vivo Multimodal Imaging of Carcinogenesis and Assessment of Intestinal Wound Healing and Inflammation
09:42

Murine Endoscopy for In Vivo Multimodal Imaging of Carcinogenesis and Assessment of Intestinal Wound Healing and Inflammation

Published on: August 26, 2014

Chromoendoscopy in magnetically guided capsule endoscopy.

Philip W Mewes1, Stefan Foertsch, Aleksandar Lj Juloski

  • 1Pattern Recognition Lab, University of Erlangen-Nuremberg, Martensstrasse 3, Erlangen Germany. philip.mewes@siemens.com

Biomedical Engineering Online
|June 14, 2013
PubMed
Summary
This summary is machine-generated.

Chromoendoscopy, using dyes like Methylene blue, can be applied to magnetically guided capsule endoscopy (MGCE) to improve visualization of gastrointestinal mucosa and lesions. This study determined optimal dye concentrations for enhanced lesion detection in ex-vivo animal models.

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Last Updated: May 10, 2026

Murine Endoscopy for In Vivo Multimodal Imaging of Carcinogenesis and Assessment of Intestinal Wound Healing and Inflammation
09:42

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10:35

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Published on: October 17, 2016

Area of Science:

  • Gastroenterology
  • Medical Imaging
  • Endoscopic Technology

Background:

  • Conventional endoscopy struggles with diagnosing intestinal metaplasia and dysplasia due to low interobserver agreement.
  • Chromoendoscopy enhances visualization of mucosal irregularities, improving diagnostic accuracy.
  • Magnetically guided capsule endoscopy (MGCE) presents an alternative for upper GI examination, but diagnostic challenges are anticipated.

Purpose of the Study:

  • To investigate the application of chromoendoscopy in conjunction with MGCE.
  • To determine optimal staining concentrations for improved mucosa and lesion visibility in MGCE.
  • To establish a protocol for chromoendoscopy-enhanced MGCE through an ex-vivo animal study.

Main Methods:

  • A modified MGCE preparation protocol incorporating a staining step was developed.
  • Optimal staining concentrations were quantitatively determined using 190 pig stomach tissue samples with varying dye concentrations.
  • Quantitative visual criteria assessed mucosa and lesion visibility, with optimal concentrations tested in an ex-vivo pig stomach experiment.

Main Results:

  • The modified protocol did not negatively affect capsule visibility or steerability within the stomach.
  • Optimal staining concentrations were identified as 0.4% for Methylene blue and Indigo carmine.
  • The use of optimal dye concentrations demonstrably improved lesion visibility.

Conclusions:

  • Chromoendoscopy is applicable to MGCE, significantly enhancing mucosa and lesion visibility.
  • Systematic evaluation yielded crucial data on appropriate staining concentrations for dyes.
  • Further in-vivo animal and human studies are required to validate these findings.