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Related Concept Videos

Endoscopic Procedures III: Video Capsule Endoscopy01:28

Endoscopic Procedures III: Video Capsule Endoscopy

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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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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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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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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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Endoscopy is a non-surgical medical technique used to examine a person's internal organs and vessels. This lesson will focus on two types of endoscopic studies: bronchoscopy and thoracoscopy.
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Endoscopic Retrograde Cholangiopancreatography (ERCP) is a diagnostic procedure that combines endoscopy and fluoroscopy to diagnose and treat conditions related to the bile ducts, pancreatic ducts, and gallbladder. This procedure is beneficial for identifying and addressing blockages, gallstones, strictures, and tumors within the biliary or pancreatic systems. ERCP is both diagnostic and therapeutic, offering the ability to visualize and treat identified problems in one session.
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Related Experiment Video

Updated: Aug 23, 2025

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Inter/Intra-Observer Agreement in Video-Capsule Endoscopy: Are We Getting It All Wrong? A Systematic Review and

Pablo Cortegoso Valdivia1, Ulrik Deding2,3, Thomas Bjørsum-Meyer2,3

  • 1Gastroenterology and Endoscopy Unit, University Hospital of Parma, University of Parma, 43126 Parma, Italy.

Diagnostics (Basel, Switzerland)
|October 27, 2022
PubMed
Summary
This summary is machine-generated.

Reader agreement in video-capsule endoscopy (VCE) is suboptimal. This systematic review found only 23% inter-observer and 36% intra-observer agreement, highlighting a need for AI tools and unified terminology in VCE reading.

Keywords:
agreementcapsule endoscopycolonsmall bowelvideo reading

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Area of Science:

  • Gastroenterology
  • Medical Imaging
  • Health Informatics

Background:

  • Video-capsule endoscopy (VCE) reading is a complex and time-intensive process.
  • Consistent interpretation of VCE findings is essential for accurate diagnoses and reliable patient reports.
  • Inter- and intra-observer agreement are critical metrics for evaluating the reliability of VCE reading.

Purpose of the Study:

  • To systematically review and meta-analyze the existing literature on inter- and intra-observer agreement in VCE reading.
  • To quantify the level of agreement among readers interpreting VCE findings.
  • To identify potential sources of heterogeneity influencing agreement in VCE interpretation.

Main Methods:

  • A comprehensive literature search was conducted across PubMed, Embase, and Web of Science up to September 2022.
  • Included studies were analyzed for reported agreement statistics, stratified by type of statistic (e.g., Kappa, ICC).
  • Meta-regression was used to explore heterogeneity, considering factors like country, capsule type, and publication year.

Main Results:

  • Sixty studies with 579 comparisons were included; 52/60 met quality standards (MINORS score).
  • Kappa statistics (for categorical data) and ICC (for continuous data) were the most common measures.
  • Overall, only 23% of inter-observer agreement and 36% of intra-observer agreement were rated as 'good' or 'perfect'.

Conclusions:

  • VCE reading exhibits significant heterogeneity and suboptimal agreement among observers.
  • Factors such as country, capsule type, and publication year may influence agreement levels.
  • Implementing artificial intelligence (AI) tools and standardized terminology could improve VCE reading agreement.