Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

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:
Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...
Computed Tomography01:10

Computed Tomography

Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
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...

You might also read

Related Articles

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

Sort by
Same author

AutoRV: Automated Assessment of Right Ventricular Structure and Function Using Transesophageal Echocardiography in Mechanically Ventilated Patients.

Ultrasound in medicine & biology·2026
Same author

Automatic monitoring of single-wall MAPSE by transesophageal echocardiography for tracking global left ventricular function irrespective of regional hypokinesia: a secondary analysis.

Intensive care medicine experimental·2026
Same author

Detection of return of spontaneous circulation during cardiopulmonary resuscitation using continuous carotid artery Doppler blood flow monitored by AI in an animal model.

Resuscitation plus·2026
Same author

Spleen metastasis as rare systemic manifestation of thymoma: a case report.

Mediastinum (Hong Kong, China)·2026
Same author

Automated Classification of Neuromuscular Diseases Using Thigh Muscle MRI With Model Interpretations.

Journal of cachexia, sarcopenia and muscle·2025
Same author

Estimation of Segmental Longitudinal Strain in Transesophageal Echocardiography by Deep Learning.

IEEE journal of biomedical and health informatics·2025

Related Experiment Video

Updated: Jul 20, 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

Computer-aided detection of colonic polyps using low-dose CT acquisitions.

Gabriel Kiss1, Stylianos Drisis, Didier Bielen

  • 1Department of Medical Image Computing (Radiology-ESAT/PSI), University Hospital Gasthuisberg K.U. Leuven, Herestraat 49, B-3000, Leuven, Belgium. gabriel.kiss@uz.kuleuven.ac.be

Academic Radiology
|August 29, 2006
PubMed
Summary

This study introduces a new method for automatically detecting colonic polyps using low-dose computed tomography (CT) scans. The technique successfully identifies polyps larger than 6 mm, even at reduced radiation doses, aiding population screening.

More Related Videos

Flexible Colonoscopy in Mice to Evaluate the Severity of Colitis and Colorectal Tumors Using a Validated Endoscopic Scoring System
15:49

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: Jul 20, 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

Flexible Colonoscopy in Mice to Evaluate the Severity of Colitis and Colorectal Tumors Using a Validated Endoscopic Scoring System
15:49

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:

  • Medical Imaging
  • Radiology
  • Computational Pathology

Background:

  • Colonic polyp detection is crucial for colorectal cancer screening.
  • Low-dose computed tomography (CT) offers reduced radiation exposure but can compromise image quality.
  • Robust automated detection methods are needed for low-dose CT data.

Purpose of the Study:

  • To develop and validate an automated method for colonic polyp detection on low-dose CT data.
  • To assess the method's robustness across various dose levels and reconstruction parameters.
  • To evaluate the impact of pre-processing filters on detection performance.

Main Methods:

  • Polyp modeling incorporating gray-level appearance (intensity profiles) and geometry (extended Gaussian images).
  • Utilized spherical harmonic decompositions for efficient similarity estimation.
  • Reconstructed patient datasets at varying dose levels (down to 5 mA) with different kernel filters, slice overlaps, and increments.
  • Assessed the efficacy of an edge-preserving smoothing filter prior to detection.

Main Results:

  • Successful detection of polyps > 6 mm even at 15 mA acquisition settings.
  • Edge-preserving smoothing filter significantly improved detection in ultra-low-dose (tube current < 15 mA) data.
  • Maintained high detection rates despite decreased image quality at lower radiation doses.

Conclusions:

  • The proposed method enables robust colonic polyp detection on low-dose CT.
  • Achieved a significant reduction in effective dose (4.93 to 1.61 mSv) while preserving high detection accuracy.
  • This approach is highly relevant for population-based colorectal cancer screening programs.