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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 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 III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

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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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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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Radiological Investigation I: X-ray and CT01:30

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

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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.
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Computed Tomography (CT) scan:
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Quantitative Dual-Energy CT in Abdominal Imaging: Technical Considerations and Emerging Clinical Applications.

Roberto García-Figueiras1, Sandra Baleato-González1, Oriol Busquets-Carrera2,3

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Dual-energy CT (DECT) enhances abdominal imaging by providing quantitative parameters for improved tissue characterization. While challenges remain in clinical implementation, DECT offers advanced applications and potential for imaging biomarkers.

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Area of Science:

  • Radiology and Imaging Science
  • Medical Physics
  • Quantitative Imaging

Background:

  • Conventional CT has limitations in abdominal imaging.
  • Dual-energy CT (DECT) leverages energy and material composition data to generate multiple datasets, overcoming conventional CT limitations.
  • DECT improves CT image quality and expands clinical applications in abdominal imaging.

Purpose of the Study:

  • To provide an overview of quantitative clinical DECT parameter applications in abdominal imaging.
  • To describe DECT principles, material characterization, and derived quantitative parameters.
  • To examine current and explore potential DECT applications in abdominal disease, including AI and radiomics.

Main Methods:

  • Review of DECT principles, including material characterization fundamentals and challenges.
  • Examination of current DECT-based quantitative imaging applications in abdominal diseases.
  • Exploration of potential future applications, such as AI integration and radiomics development.

Main Results:

  • DECT enables noninvasive detection, characterization, and quantification of clinically relevant materials.
  • DECT improves tissue characterization and provides quantitative parameters for abdominal imaging.
  • Implementation of advanced DECT applications and quantitative parameters in clinical practice presents challenges.

Conclusions:

  • DECT significantly enhances diagnostic capabilities in abdominal imaging.
  • Quantitative DECT parameters offer expanded roles in disease characterization and biomarker development.
  • Further research and development are needed to overcome implementation challenges and fully realize DECT's potential.