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

Computed Tomography01:10

Computed Tomography

9.4K
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...
9.4K
Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

525
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...
525
Imaging Studies II: Positron Emission Tomography and Scintigraphy01:25

Imaging Studies II: Positron Emission Tomography and Scintigraphy

729
Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
Fundamental Principles of PET
729
Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

602
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...
602
Imaging Studies I: CT and MRI01:14

Imaging Studies I: CT and MRI

1.1K
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...
1.1K
Radiological Investigation I: X-ray and CT01:30

Radiological Investigation I: X-ray and CT

1.5K
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...
1.5K

You might also read

Related Articles

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

Sort by
Same author

A practical method for measuring rotation angles in partial-angle CT scan by using CTDI phantoms, metal rods, and a real-time dosimeter.

Radiological physics and technology·2026
Same author

Impact of automatic exposure control on radiation dose and detectability in dual-source and fast kV switching dual-energy CT.

Physical and engineering sciences in medicine·2026
Same author

[4. Radiation Exposure in Computed Tomography: Fundamentals and Personalized Dose Assessment].

Nihon Hoshasen Gijutsu Gakkai zasshi·2026
Same author

[Development and Accuracy Evaluation of the Beam Width Using a Tungsten Ring in a Wide-beam CT System].

Nihon Hoshasen Gijutsu Gakkai zasshi·2026
Same author

Basic characteristics of do-it-yourself dosimeter in general radiography system.

Radiological physics and technology·2026
Same author

Measurement of the volume CT dose index on spiral CT scanning with a real-time ionization chamber.

Journal of applied clinical medical physics·2026

Related Experiment Video

Updated: Mar 20, 2026

Time-Resolved, Dynamic Computed Tomography Angiography for Characterization of Aortic Endoleaks and Treatment Guidance via 2D-3D Fusion-Imaging
09:32

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

Published on: December 9, 2021

3.6K

Tube Current Modulation Between Single- and Dual-Energy CT With a Second-Generation Dual-Source Scanner: Radiation

Kosuke Matsubara1, Tadanori Takata2, Masanao Kobayashi3

  • 11 Department of Quantum Medical Technology, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, 5-11-80 Kodatsuno, Kanazawa, Ishikawa 920-0942, Japan.

AJR. American Journal of Roentgenology
|May 26, 2016
PubMed
Summary
This summary is machine-generated.

Tube current modulation in dual-energy CT requires higher settings for larger patients to maintain image quality. This dual-energy CT study compared radiation dose and noise in single- and dual-energy modes using phantoms.

Keywords:
dosimetrydual-energy CTimage noiseradiation dosetube current modulation

More Related Videos

Novel In Vivo Micro-Computed Tomography Imaging Techniques for Assessing the Progression of Non-Alcoholic Fatty Liver Disease
08:41

Novel In Vivo Micro-Computed Tomography Imaging Techniques for Assessing the Progression of Non-Alcoholic Fatty Liver Disease

Published on: March 24, 2023

1.9K
Gene Regulation and Targeted Therapy in Gastric Cancer Peritoneal Metastasis: Radiological Findings from Dual Energy CT and PET/CT
10:28

Gene Regulation and Targeted Therapy in Gastric Cancer Peritoneal Metastasis: Radiological Findings from Dual Energy CT and PET/CT

Published on: January 22, 2018

11.7K

Related Experiment Videos

Last Updated: Mar 20, 2026

Time-Resolved, Dynamic Computed Tomography Angiography for Characterization of Aortic Endoleaks and Treatment Guidance via 2D-3D Fusion-Imaging
09:32

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

Published on: December 9, 2021

3.6K
Novel In Vivo Micro-Computed Tomography Imaging Techniques for Assessing the Progression of Non-Alcoholic Fatty Liver Disease
08:41

Novel In Vivo Micro-Computed Tomography Imaging Techniques for Assessing the Progression of Non-Alcoholic Fatty Liver Disease

Published on: March 24, 2023

1.9K
Gene Regulation and Targeted Therapy in Gastric Cancer Peritoneal Metastasis: Radiological Findings from Dual Energy CT and PET/CT
10:28

Gene Regulation and Targeted Therapy in Gastric Cancer Peritoneal Metastasis: Radiological Findings from Dual Energy CT and PET/CT

Published on: January 22, 2018

11.7K

Area of Science:

  • Medical Imaging
  • Radiological Physics

Background:

  • Tube current modulation (TCM) is crucial for optimizing radiation dose in computed tomography (CT).
  • Dual-source CT (DSCT) scanners offer advanced imaging capabilities, including dual-energy (DE) scanning.
  • Understanding TCM effects in DE-CT is essential for dose reduction and image quality maintenance.

Purpose of the Study:

  • To compare the impact of tube current modulation (TCM) on radiation dose and image noise in single-energy (SE) CT versus dual-energy (DE) CT.
  • To evaluate these effects using a second-generation dual-source CT scanner across different phantom sizes and scanning protocols.

Main Methods:

  • Utilized custom-made polymethylmethacrylate phantoms simulating slim and large patient body types.
  • Measured absorbed radiation dose and evaluated image noise (standard deviation of CT numbers) under various SE (120 kV) and DE (100/Sn140 kV, 80/Sn140 kV, 140/80 kV) scanning conditions.
  • Activated TCM with quality reference tube current-time settings ranging from 150 to 600 mAs.

Main Results:

  • For slim phantoms, increasing TCM settings led to higher radiation dose and lower image noise in both SE and DE modes.
  • For large phantoms, radiation dose and noise plateaued at higher TCM settings (≥300 mAs for 100/Sn140 kV, ≥450 mAs for 120 kV).
  • The 80/Sn140 kV DE protocol resulted in lower radiation dose and higher image noise compared to 120 kV and 100/Sn140 kV protocols across all TCM settings.

Conclusions:

  • Tube current modulation in DE-CT, particularly with the 100/Sn140 kV protocol for large phantoms, may approach system exposure limits at lower quality reference tube current-time settings compared to SE CT.
  • Optimizing TCM in DE-CT requires careful consideration of phantom size and kV settings to balance radiation dose and image quality.