Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Endoscopic Procedures II: Colonoscopy

Endoscopic Procedures II: Colonoscopy

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:

Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy

Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy

This lesson explores three gastrointestinal imaging techniques: radionuclide testing, colonic transit studies, and virtual colonoscopy.
Radionuclide Testing
Radionuclide testing is a sophisticated medical technique for assessing gastrointestinal motility. It focuses on gastric emptying and colonic transit time. Radioactive markers track the movement of food through the digestive system, providing insights into gastrointestinal disorders.
In gastric emptying studies, a meal's liquid and solid...

Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy

Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy

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...

Endoscopic Procedures I: Esophagogastroduodenoscopy

Endoscopic Procedures I: Esophagogastroduodenoscopy

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:

Assessment of the Rectum and Anus

Assessment of the Rectum and Anus

Evaluating the rectum and anus plays a crucial role in conducting a thorough physical examination of the gastrointestinal system. Although it may be uncomfortable and often embarrassing for the patient, it holds immense diagnostic value, particularly in detecting gastrointestinal diseases and abnormalities. This guide will explain how to perform this assessment using inspection and palpation methods.
Rectal Inspection
Begin by inspecting the perianal and anal areas for color, texture, rashes,...

Endoscopic Procedures III: Video Capsule Endoscopy

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...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Maternal liver function and adverse pregnancy outcomes in Chinese women with HIV: a cohort study.

BMC public health·2026

Same author

Chaos generation and control in optoelectromechanical systems.

Optics express·2025

Same author

Narrowing Surface Plasmon Resonances of Gold Nanorods via Multiwavelength Analytical Ultracentrifugation-Assisted Fractionation.

Langmuir : the ACS journal of surfaces and colloids·2025

Same author

Quantum-enhanced mid-infrared single-photon frequency up-conversion detection with loss and noise resilience.

Optics letters·2025

Same author

Pulmonary Delivery of TCR Bispecific Proteins via Mesenchymal Stem Cells Facilitates Efficient Clearance of Lung Cancers.

Cancer science·2025

Same author

"The Culturally and Linguistically Diverse Community Is Not Just Minoritised But Ignored": Engaging Culturally and Linguistically Diverse Communities in Australia With Blood-Borne Viruses and Sexually Transmissible Infections Healthcare.

Health expectations : an international journal of public participation in health care and health policy·2025

Search research articles

Related Experiment Video

Updated: Jun 12, 2026

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

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

Published on: July 11, 2025

How do you measure performance as a colonoscopist?

C P Challand¹, N Bullen, E Wu

¹Gastrointestinal Directorate, Derriford Hospital, Plymouth Hospitals NHS Trust, Plymouth, UK. chrischalland@hotmail.com

Colorectal Disease : the Official Journal of the Association of Coloproctology of Great Britain and Ireland

|June 10, 2010

Summary

A new capability index effectively measures colonoscopy performance, linking quality and cost-effectiveness. Higher training case rates correlate with improved clinical performance and cost-efficiency.

More Related Videos

Flexible Colonoscopy in Mice to Evaluate the Severity of Colitis and Colorectal Tumors Using a Validated Endoscopic Scoring System

Flexible Colonoscopy in Mice to Evaluate the Severity of Colitis and Colorectal Tumors Using a Validated Endoscopic Scoring System

Published on: October 16, 2013

Related Experiment Videos

Last Updated: Jun 12, 2026

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

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

Published on: July 11, 2025

Flexible Colonoscopy in Mice to Evaluate the Severity of Colitis and Colorectal Tumors Using a Validated Endoscopic Scoring System

Flexible Colonoscopy in Mice to Evaluate the Severity of Colitis and Colorectal Tumors Using a Validated Endoscopic Scoring System

Published on: October 16, 2013

Area of Science:

Gastroenterology
Health Economics
Medical Education

Background:

Measuring clinical performance in colonoscopy is crucial for quality assurance.
Existing methods may not adequately capture both quality and cost-effectiveness.

Purpose of the Study:

To describe an easy and reproducible method for measuring clinical performance in colonoscopy.
To assess the relationship between performance metrics, cost-effectiveness, and training.

Main Methods:

Analysis of 3884 colonoscopies performed between January and December 2007.
Development of a capability index using crude Caecal Intubation Rate (CIR) and mean Points Performed/Endoscopy List (points/list).
Health economic analysis to determine cost-effectiveness thresholds.

Main Results:

A mean crude CIR of 89.6% and 8.3 points/list were observed.
Only 7 out of 23 endoscopists met the Joint Advisory Group on Gastrointestinal Endoscopy (JAG) standard cost-effectively.
Higher annual colonoscopy rates (≥150 cases) and a higher proportion of training cases (≥15%) were associated with improved performance metrics.

Conclusions:

Clinical performance is a function of quality delivered cost-effectively.
The developed capability index is an effective and reproducible measure of clinical performance.
Training case volume was not associated with reduced overall colonoscopy volume.