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Related Concept Videos

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...
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...
Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...
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...
Positron Emission Tomography01:29

Positron Emission Tomography

Positron emission tomography (PET) is a medical imaging technique involving radiopharmaceuticals — substances that emit short-lived radiation. Although the first PET scanner was introduced in 1961, it took 15 more years before radiopharmaceuticals were combined with the technique and revolutionized its potential.
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body being...
Imaging Studies I: CT and MRI01:14

Imaging Studies I: CT and MRI

Introduction: MRI and CT scans are crucial advancements in medical imaging techniques, playing a vital role in diagnosing conditions related to the gastrointestinal (GI) system. Each scan serves distinct purposes, targets specific areas, and requires unique nursing duties.
Description of the Procedures
Computed Tomography (CT) scan:
Computed Tomography (CT) scans use X-ray technology to generate detailed images of bones, organs, and tissues. During the scan, the patient lies on a moving table...

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Related Experiment Video

Updated: May 11, 2026

Image Rendering Techniques in Postmortem Computed Tomography: Evaluation of Biological Health and Profile in Stranded Cetaceans
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Image Rendering Techniques in Postmortem Computed Tomography: Evaluation of Biological Health and Profile in Stranded Cetaceans

Published on: September 27, 2020

Computed tomography colonography.

Bryant Furlow

    Radiologic Technology
    |May 21, 2013
    PubMed
    Summary
    This summary is machine-generated.

    Colorectal cancer screening and characterization are enhanced by CT colonography, or virtual colonoscopy. This review covers its role in diagnosis, treatment, and monitoring, including techniques and emerging computer-aided detection.

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    Time-Resolved, Dynamic Computed Tomography Angiography for Characterization of Aortic Endoleaks and Treatment Guidance via 2D-3D Fusion-Imaging

    Published on: December 9, 2021

    Area of Science:

    • Medical imaging
    • Gastroenterology
    • Oncology

    Background:

    • Colorectal cancer is a significant cause of cancer morbidity and mortality in the U.S.
    • CT colonography (virtual colonoscopy) is vital for colorectal cancer screening and characterization.
    • It aids in surveillance of polyps and post-treatment monitoring.

    Purpose of the Study:

    • To review the epidemiology, pathobiology, diagnosis, and treatment of colorectal cancer.
    • To detail the role of CT colonography in screening, surveillance, staging, and post-treatment monitoring.
    • To cover CT colonography techniques and computer-aided detection.

    Main Methods:

    • Review of existing literature on colorectal cancer and CT colonography.
    • Description of CT colonography techniques: patient preparation, fecal tagging, colon insufflation.
    • Inclusion of emerging technologies like computer-aided detection.

    Main Results:

    • CT colonography is a key imaging modality for colorectal cancer.
    • The article provides a comprehensive overview of its applications.
    • Emerging technologies are enhancing its diagnostic capabilities.

    Conclusions:

    • CT colonography is integral to modern colorectal cancer management.
    • Understanding its techniques and advancements is crucial for clinicians.
    • It offers a valuable tool for screening, diagnosis, and monitoring.