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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 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...
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...
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 II: Positron Emission Tomography and Scintigraphy01:25

Imaging Studies II: Positron Emission Tomography and Scintigraphy

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

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Related Experiment Video

Updated: Jun 29, 2026

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

Technical principles of dual source CT.

Martin Petersilka1, Herbert Bruder, Bernhard Krauss

  • 1Siemens Health Care, Forchheim, Germany. martin.petersilka@siemens.com

European Journal of Radiology
|October 10, 2008
PubMed
Summary
This summary is machine-generated.

Dual Source CT (DSCT) scanners utilize two X-ray tubes and detectors to enhance temporal resolution for cardiac imaging and enable dual-energy scans. This technology overcomes limitations of conventional multi-detector row CT (MDCT) systems.

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Area of Science:

  • Medical Imaging
  • Radiology
  • Computed Tomography

Background:

  • Multi-detector row CT (MDCT) systems have advanced with increased detector slices, enabling whole-body scans with sub-millimeter resolution.
  • Conventional MDCT faces limitations, particularly in temporal resolution for cardiac imaging.

Purpose of the Study:

  • To describe the system concept and design of a novel Dual Source CT (DSCT) scanner.
  • To highlight DSCT's potential to overcome MDCT limitations and enhance imaging capabilities.

Main Methods:

  • Implementation of a CT scanner with two X-ray tubes and two detectors offset by 90 degrees.
  • Operation of the two X-ray tubes at different voltages to acquire dual-energy information.

Main Results:

  • DSCT achieves temporal resolution equivalent to a quarter of the gantry rotation time (83 ms at 0.33 s), independent of heart rate.
  • DSCT enables dual-energy imaging by utilizing different tube voltages.
  • The dual-tube system offers increased power for longer scans and larger patients.

Conclusions:

  • DSCT offers significant improvements in temporal resolution for cardiac imaging compared to conventional MDCT.
  • DSCT provides dual-energy capabilities, expanding diagnostic potential.
  • Future advancements in DSCT technology are anticipated.