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Related Concept Videos

Computed Tomography01:10

Computed Tomography

7.3K
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 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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Electron Microscope Tomography and Single-particle Reconstruction01:07

Electron Microscope Tomography and Single-particle Reconstruction

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Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron microscope tomography and single-particle reconstruction. While single-particle reconstruction can examine macromolecules and macromolecular complexes in vitro conditions only, tomography permits the study of cell components or small cells in vivo.
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...
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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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Positron Emission Tomography01:29

Positron Emission Tomography

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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.
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body...
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Related Experiment Video

Updated: Oct 24, 2025

3D Imaging of Soft-Tissue Samples using an X-ray Specific Staining Method and Nanoscopic Computed Tomography
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3D Imaging of Soft-Tissue Samples using an X-ray Specific Staining Method and Nanoscopic Computed Tomography

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Computed tomography recent history and future perspectives.

Jiang Hsieh1, Thomas Flohr2

  • 1GE Healthcare, Waukesha, Wisconsin, United States.

Journal of Medical Imaging (Bellingham, Wash.)
|August 16, 2021
PubMed
Summary
This summary is machine-generated.

Computed tomography (CT) hardware has advanced significantly since the 1980s, enhancing imaging capabilities. Future developments like photon-counting CT promise further improvements in clinical applications.

Keywords:
dual-sourcehelical and spiralmulti-slicephoton-countingspectralwide-cone

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Image Rendering Techniques in Postmortem Computed Tomography: Evaluation of Biological Health and Profile in Stranded Cetaceans
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Area of Science:

  • Medical Imaging Physics
  • Radiological Technology

Background:

  • Computed tomography (CT) has seen substantial technological evolution since the late 1980s.
  • Focus is on hardware and system advancements, with companion papers covering historical context and reconstruction techniques.

Purpose of the Study:

  • To review key computed tomography (CT) hardware and system technologies developed since the late 1980s.
  • To provide an overview of emerging CT technologies, specifically photon-counting CT.

Main Methods:

  • Review divided into five sections: helical spiral data acquisition, multi-slice CT, wide-cone CT, dual-source CT, and spectral CT.
  • Detailed discussion of photon-counting CT, including theory of operation and clinical examples.

Main Results:

  • Demonstrated efficacy of five historical and one future CT technology through theoretical analyses, phantom results, and clinical examples.
  • These advancements improve CT performance in isotropic volume coverage, temporal resolution, and material differentiation.

Conclusions:

  • CT technological developments over 30 years have driven success in trauma, oncology, cardiac imaging, and stroke.
  • Ongoing advancements in CT technology are essential to meet the demands of evolving clinical applications.