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Related Concept Videos

Computed Tomography01:10

Computed Tomography

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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...
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Imaging Studies III: Computed Tomography01:27

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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...
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Positron Emission Tomography01:29

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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.
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Imaging Studies for Cardiovascular System V: CT01:28

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

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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.
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X-ray Imaging01:24

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German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with...
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Related Experiment Video

Updated: Apr 16, 2026

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

Bryant Furlow

    Radiologic Technology
    |March 5, 2015
    PubMed
    Summary
    This summary is machine-generated.

    Dual-energy computed tomography (DECT) offers superior tissue and disease differentiation by analyzing how different energy X-rays interact with materials. This advanced imaging technique provides precise anatomical and functional insights beyond traditional CT scans.

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    Area of Science:

    • Medical Imaging
    • Radiology
    • Physics

    Background:

    • Traditional single-energy CT has limitations in differentiating tissue chemistry.
    • Dual-energy computed tomography (DECT) utilizes varying photon energies for enhanced material differentiation.
    • DECT exploits atomic differences for precise tissue and disease characterization.

    Purpose of the Study:

    • To provide a comprehensive overview of Dual-Energy Computed Tomography (DECT).
    • To detail the physical principles, technological advancements, and clinical utility of DECT.
    • To discuss the limitations and future potential of DECT in medical imaging.

    Main Methods:

    • Review of DECT's historical development and physical basis.
    • Description of DECT scanner designs and radiation dose considerations.
    • Explanation of DECT postprocessing techniques and clinical applications.

    Main Results:

    • DECT enables more precise differentiation of tissue chemistry and disease processes compared to single-energy CT.
    • The technology leverages interactions of high- and low-energy photon spectra.
    • DECT provides both precise anatomic and functional imaging capabilities.

    Conclusions:

    • DECT represents a significant advancement in medical imaging, offering enhanced diagnostic capabilities.
    • Understanding DECT's principles, applications, and limitations is crucial for its effective clinical implementation.
    • Future prospects for DECT include further refinement and expanded clinical use in various specialties.