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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

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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Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

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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 I: CT and MRI01:14

Imaging Studies I: CT and MRI

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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.
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...
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X-ray Imaging01:24

X-ray Imaging

9.7K
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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Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT01:25

Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT

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Calcium-Scoring CT ScanA calcium-scoring CT scan, also known as coronary artery calcium (CAC) scan, detects calcium deposits in the coronary arteries. This test assesses the risk of coronary artery disease (CAD), which can lead to cardiovascular events such as angina, heart failure, and sudden cardiac arrest.A calcium-scoring CT scan is generally recommended for individuals at intermediate risk of CAD without symptoms. It includes:Men aged 40-75 and women aged 50-75: Especially those with a...
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Related Experiment Video

Updated: Jan 10, 2026

Author Spotlight: Advancements in 3D Optical Imaging for Comprehensive Body Composition Assessment in Modern Research
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Author Spotlight: Advancements in 3D Optical Imaging for Comprehensive Body Composition Assessment in Modern Research

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Effects of Computed Tomography Technical Parameters on Body-Composition Analysis.

Jin Young Yoo1, Moon Hyung Choi2

  • 1Department of Radiology, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.

Korean Journal of Radiology
|November 28, 2025
PubMed
Summary
This summary is machine-generated.

Computed tomography (CT) is a key tool for body-composition analysis (BCA), measuring muscle and fat. Technical factors in CT scans significantly impact BCA accuracy, highlighting the need for consistent methods.

Keywords:
Body-composition analysisCT acquisition parametersCT reconstruction techniquesObesitySarcopenia

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Area of Science:

  • Radiology
  • Medical Imaging
  • Body Composition Analysis

Background:

  • Body-composition analysis (BCA) is crucial for patient outcomes in various diseases.
  • Abnormalities in muscle and fat distribution are linked to disease severity.
  • Computed tomography (CT) is increasingly preferred for BCA due to its accuracy and AI capabilities.

Purpose of the Study:

  • To review the impact of CT parameters on body-composition analysis.
  • To highlight factors influencing CT-based BCA measurements.
  • To emphasize the need for consistency in CT-BCA for improved reproducibility.

Main Methods:

  • Review of existing literature on CT parameters and BCA.
  • Analysis of how technical factors affect quantitative CT measurements.
  • Discussion of advanced CT technologies and their influence on BCA.

Main Results:

  • CT-based BCA accurately quantifies skeletal muscle and adipose tissue.
  • Parameters like contrast phase, tube voltage, and reconstruction algorithms affect muscle density.
  • New CT technologies may introduce additional variability in BCA.

Conclusions:

  • Awareness of CT technical factors is essential for accurate BCA.
  • Standardizing CT parameters can enhance measurement reproducibility.
  • Improved understanding supports broader clinical and research applications of CT-BCA.