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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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Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy01:26

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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
Sigmoidoscopy is a diagnostic procedure that uses a flexible sigmoidoscope equipped with a light source and camera to examine the rectum and sigmoid colon. The procedure involves inserting the tube through the anus...
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Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy01:26

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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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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.
During an EGD, the endoscope can be used to:
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Gastrointestinal Motility Disorders01:20

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Gastrointestinal or GI motility disorders are characterized by irregular gastrointestinal tract movements, disrupting food transit from the mouth to the anus. They are caused by damage or dysfunction in gut muscles or nerves. These disorders can cause symptoms such as severe constipation, diarrhea, abdominal pain, and swallowing difficulties. Disorders can affect any segment of the GI tract and range widely in severity, from common conditions like GERD to life-threatening conditions like...
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Related Experiment Video

Updated: Apr 5, 2026

Flexible Colonoscopy in Mice to Evaluate the Severity of Colitis and Colorectal Tumors Using a Validated Endoscopic Scoring System
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A Review of Locomotion Systems for Capsule Endoscopy.

Lejie Liu, Shahrzad Towfighian, Amine Hila

    IEEE Reviews in Biomedical Engineering
    |August 21, 2015
    PubMed
    Summary

    Wireless capsule endoscopy offers a less invasive alternative to traditional methods. This review explores advanced locomotion systems to improve capsule navigation and retention within the gastrointestinal (GI) tract.

    Area of Science:

    • Biomedical Engineering
    • Gastroenterology
    • Medical Devices

    Background:

    • Wireless capsule endoscopy (WCE) is an emerging technology for gastrointestinal (GI) examination.
    • Current WCE lacks active locomotion, relying on natural peristalsis, which limits control and increases retention risks.

    Purpose of the Study:

    • To review and compare state-of-the-art locomotion methods for WCE.
    • To understand GI tract properties and motility mechanisms for future WCE development.

    Main Methods:

    • Literature review of existing WCE locomotion systems.
    • Analysis of locomotion features: size, speed, power, and temperature.
    • Description of GI tract physiology and motility.

    Main Results:

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    • Various locomotion methods for WCE were identified and characterized.
    • Key GI tract properties influencing capsule movement were detailed.
    • Comparison of locomotion methods based on desired features.

    Conclusions:

    • Active locomotion is crucial for optimizing WCE performance.
    • Developing a GI-tract-compatible locomotion system is essential for future WCE.
    • Further research is needed to integrate effective locomotion into capsule endoscopy.