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Related Concept Videos

Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy01:26

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 II: Colonoscopy01:25

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:
Assessment of the Rectum and Anus01:25

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 IV: Sigmoidoscopy and Laproscopy01:26

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 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...
Endoscopic Studies I: Bronchoscopy and Thoracoscopy01:30

Endoscopic Studies I: Bronchoscopy and Thoracoscopy

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.
Bronchoscopy
Description
Bronchoscopy is a procedure that involves direct visualization of the larynx, trachea, and bronchi for diagnostic and therapeutic purposes. A flexible fiber optic or rigid bronchoscope is used to carry out the procedure. The fiber-optic bronchoscope is more frequently used due to...

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Related Experiment Video

Updated: May 11, 2026

Structured Approach to Colonoscopy Technique Optimization: A Single-Center Experience with Novice Endoscopists
03:43

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

Published on: July 11, 2025

Virtual colonoscopy: Utility, impact and overview.

Dhakshina Ganeshan1, Khaled M Elsayes, David Vining

  • 1Dhakshina Ganeshan, Khaled M Elsayes, David Vining, Department of Radiology, University of Texas, MD Anderson Cancer Center, Houston, TX 77030, United States.

World Journal of Radiology
|May 15, 2013
PubMed
Summary
This summary is machine-generated.

Computed tomography (CT) colonoscopy is a reliable method for detecting colorectal cancer and polyps. Meticulous technique and interpretation experience are crucial for accurate CT colonoscopy results.

Keywords:
Colorectal cancerComputed tomography colonoscopy

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E-Patient Counseling Trial (E-PACO): Computer Based Education versus Nurse Counseling for Patients to Prepare for Colonoscopy
06:28

E-Patient Counseling Trial (E-PACO): Computer Based Education versus Nurse Counseling for Patients to Prepare for Colonoscopy

Published on: August 1, 2019

Related Experiment Videos

Last Updated: May 11, 2026

Structured Approach to Colonoscopy Technique Optimization: A Single-Center Experience with Novice Endoscopists
03:43

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

Published on: July 11, 2025

E-Patient Counseling Trial (E-PACO): Computer Based Education versus Nurse Counseling for Patients to Prepare for Colonoscopy
06:28

E-Patient Counseling Trial (E-PACO): Computer Based Education versus Nurse Counseling for Patients to Prepare for Colonoscopy

Published on: August 1, 2019

Area of Science:

  • Medical Imaging
  • Gastroenterology
  • Oncology

Background:

  • Computed tomography (CT) colonoscopy is a recognized method for colorectal cancer evaluation.
  • Advances in CT colonoscopy technique have improved its efficacy.
  • Accurate interpretation requires significant experience and understanding of potential pitfalls.

Purpose of the Study:

  • To review the indications, contraindications, technique, and interpretation of CT colonoscopy.
  • To discuss recent advancements and the current role of CT colonoscopy in colorectal cancer screening.
  • To highlight the importance of meticulous technique and interpreter experience for optimal results.

Main Methods:

  • Review of existing literature on CT colonoscopy.
  • Discussion of technical aspects and interpretation guidelines.
  • Analysis of the role of CT colonoscopy in colorectal cancer screening.

Main Results:

  • CT colonoscopy can achieve excellent results in detecting colorectal cancer and significant polyps.
  • Meticulous technique is essential for high sensitivity and specificity.
  • A learning curve exists for accurate interpretation of CT colonoscopy studies.

Conclusions:

  • CT colonoscopy is an effective tool for colorectal cancer screening when performed with a meticulous technique.
  • Adequate training and experience are vital for accurate interpretation and reliable detection rates.
  • The article provides a comprehensive overview of CT colonoscopy, including its current role and recent advances.