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 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...

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...

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...

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

Do hepatic and biliary functional data from gadoxetate-enhanced MRI add value in predicting outcomes in primary sclerosing cholangitis (PSC)?

European radiology·2026

Same author

Comparison of Conventional versus Abbreviated MR Enterography: Assessing Disease Activity and Complications in Crohn Disease.

Radiology·2026

Same author

Bridging the gap between radiologic and manometric criteria to diagnose esophageal motility disorders: a pictorial review for radiologists.

BJR open·2026

Same author

Performance of the multi-target hepatocellular carcinoma blood test: Design and rationale of the ALTUS study.

Hepatology communications·2025

Same author

Reinterpretation of outside imaging and review at hepatobiliary tumor board: impact on diagnosis and management of patients with hepatobiliary neoplasms.

Abdominal radiology (New York)·2025

Same author

Federated Learning for Renal Tumor Segmentation and Classification on Multi-Center MRI Dataset.

Journal of magnetic resonance imaging : JMRI·2025

Search research articles

Related Experiment Video

Updated: Jun 12, 2026

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

Reducing the radiation dose for CT colonography using adaptive statistical iterative reconstruction: A pilot study.

Kristina T Flicek¹, Amy K Hara, Alvin C Silva

¹Department of Radiology, Mayo Clinic, Scottsdale, AZ 85259, USA.

AJR. American Journal of Roentgenology

|June 23, 2010

Summary

CT colonography (CTC) can achieve a 50% radiation dose reduction without compromising image quality by utilizing adaptive statistical iterative reconstruction (ASIR). This technique preserves diagnostic accuracy, making low-dose CTC feasible for patient screening.

More Related Videos

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

Improved Registration of 3D CT Angiography with X-ray Fluoroscopy for Image Fusion During Transcatheter Aortic Valve Implantation

Improved Registration of 3D CT Angiography with X-ray Fluoroscopy for Image Fusion During Transcatheter Aortic Valve Implantation

Published on: June 3, 2018

Related Experiment Videos

Last Updated: Jun 12, 2026

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

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

Improved Registration of 3D CT Angiography with X-ray Fluoroscopy for Image Fusion During Transcatheter Aortic Valve Implantation

Improved Registration of 3D CT Angiography with X-ray Fluoroscopy for Image Fusion During Transcatheter Aortic Valve Implantation

Published on: June 3, 2018

Area of Science:

Radiology
Medical Imaging

Background:

Computed Tomography Colonography (CTC) is a crucial tool for colorectal cancer screening.
Reducing radiation dose in CTC is essential for patient safety.
Adaptive Statistical Iterative Reconstruction (ASIR) is a promising technique for noise reduction in low-dose imaging.

Purpose of the Study:

To evaluate the feasibility of maintaining image quality in CT colonography (CTC) with a reduced radiation dose.
To assess the effectiveness of adaptive statistical iterative reconstruction (ASIR) in preserving image quality at lower radiation doses.

Main Methods:

Phantom studies were conducted using varying radiation doses (10-40 mAs) and ASIR levels (0-100%).
Patient scans were performed at standard (50 mAs) and reduced (25 mAs with 40% ASIR) doses.
Radiologists assessed 2D and 3D image quality and noise in both phantom and patient studies.

Main Results:

Higher ASIR percentages correlated with reduced image noise in phantom studies.
No significant differences in image quality were found between standard- and low-dose CTC with 40% ASIR in patients.
Low-dose CTC with ASIR demonstrated lower measured image noise compared to standard-dose techniques.

Conclusions:

A 50% reduction in radiation dose for CTC is feasible without compromising image quality when using ASIR.
This pilot study suggests that low-dose CTC with ASIR is a viable option.
Further research in larger patient cohorts is recommended to validate these findings.