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

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...

Imaging Studies III: Computed Tomography

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: CT

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...

Radiological Investigation I: X-ray and CT

Radiological Investigation I: X-ray and CT

Radiological investigations, including X-rays and computed tomography (CT) scans, are critical for diagnosing and evaluating various medical conditions. These imaging techniques provide valuable insights into the body's internal structures, aiding in the detection of abnormalities, assessment of disease progression, and development of treatment strategies. This article delves into two primary radiological investigations, chest X-rays and CT scans, outlining their purpose, procedures, and the...

Imaging Studies I: CT and MRI

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...

Computed Tomography

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...

You might also read

Related Articles

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

Sort by

Same author

Mesenteric Ischemia: 2026 Update-<i>AJR</i> Expert Panel Narrative Review.

AJR. American journal of roentgenology·2026

Same author

The CT colonography radiology and data system: history, updates, and future directions.

Cancer imaging : the official publication of the International Cancer Imaging Society·2026

Same author

Paid Family and Medical Leave Policies in Academic Radiology and Radiation Oncology Departments: A SCARD and SCAROP Survey.

Journal of the American College of Radiology : JACR·2026

Same author

Advancements in Screening Strategies for Early-Onset Colorectal Cancer (EOCRC).

Radiologic clinics of North America·2026

Same author

ACR Appropriateness Criteria® Staging and Follow-Up of Pancreatic Neuroendocrine Tumors.

Journal of the American College of Radiology : JACR·2026

Same author

ACR Appropriateness Criteria® Staging and Follow-up of Gastric Cancer.

Journal of the American College of Radiology : JACR·2026

Same journal

Abstracts of selected papers from the current literature.

Abdominal imaging·2016

Same journal

How the radiologist can add value in the evaluation of the pre- and post-surgical pancreas.

Abdominal imaging·2015

Same journal

Erratum to: Hot spleen: hypervascular lesions of the spleen.

Abdominal imaging·2015

Same journal

Cross-sectional imaging, with surgical correlation, of patients presenting with complications after remote bariatric surgery without bowel obstruction.

Abdominal imaging·2015

Same journal

The ability of 18F-choline PET/CT to identify local recurrence of prostate cancer.

Abdominal imaging·2015

Same journal

T1-hyperintense renal lesions: can high signal predict lack of enhancement?

Abdominal imaging·2015

See all related articles

Search research articles

Related Experiment Video

Updated: May 16, 2026

Voluntary Breath-hold Technique for Reducing Heart Dose in Left Breast Radiotherapy

Voluntary Breath-hold Technique for Reducing Heart Dose in Left Breast Radiotherapy

Published on: July 3, 2014

Dose reduction methods for CT colonography.

Kevin J Chang¹, Judy Yee

¹Department of Diagnostic Imaging, Rhode Island Hospital, The Warren Alpert Medical School of Brown University, 593 Eddy St., Providence, RI 02903, USA. kchang@lifespan.org

Abdominal Imaging

|December 12, 2012

Summary

This summary is machine-generated.

CT colonography offers significant benefits for colon cancer screening, outweighing theoretical radiation risks. Various strategies can reduce radiation dose while maintaining image quality, making it a safe and effective screening option.

More Related Videos

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

Published on: September 11, 2011

Novel Quantification Protocol for Cardiovascular Calcification Progression Using Longitudinal MicroPET/MicroCT Images

Novel Quantification Protocol for Cardiovascular Calcification Progression Using Longitudinal MicroPET/MicroCT Images

Published on: November 15, 2024

Related Experiment Videos

Last Updated: May 16, 2026

Voluntary Breath-hold Technique for Reducing Heart Dose in Left Breast Radiotherapy

Voluntary Breath-hold Technique for Reducing Heart Dose in Left Breast Radiotherapy

Published on: July 3, 2014

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

Published on: September 11, 2011

Novel Quantification Protocol for Cardiovascular Calcification Progression Using Longitudinal MicroPET/MicroCT Images

Novel Quantification Protocol for Cardiovascular Calcification Progression Using Longitudinal MicroPET/MicroCT Images

Published on: November 15, 2024

Area of Science:

Radiology
Medical Imaging
Oncology

Background:

Growing concerns exist regarding medical radiation risks from CT scans, especially for screening examinations like CT colonography.
These concerns must be balanced against the benefits of colon cancer screening and the risks of alternative methods like optical colonoscopy.

Purpose of the Study:

To evaluate the risk-benefit ratio of CT colonography for colon cancer screening.
To discuss strategies for reducing radiation dose in CT colonography while preserving image quality.

Main Methods:

Review of radiation dose estimation techniques.
Discussion of dose reduction strategies including tube current/voltage reduction, automatic dose modulation, and iterative reconstruction.
Consideration of practical aspects like patient positioning, colonic insufflation, scan volume optimization, and image parameter adjustments.

Main Results:

The risk-benefit ratio strongly favors CT colonography for colon cancer screening.
Multiple synergistic strategies exist for significant CT radiation dose reduction.
Image quality and noise can be managed effectively during dose reduction.

Conclusions:

CT colonography is a beneficial and safe colon cancer screening tool.
Implementing ALARA principle-guided dose reduction techniques enhances safety without compromising efficacy.
Standardized methods for dose reduction and comparison across institutions are proposed.