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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 for Cardiovascular System IV: CMRI01:21

Imaging Studies for Cardiovascular System IV: CMRI

Cardiovascular magnetic resonance imaging, or CMRI, is a non-invasive diagnostic test that employs a magnetic field and radiofrequency waves to create precise images of the heart and arteries. It provides comprehensive information about cardiac anatomy, function, perfusion, and tissue characterization without ionizing radiation.IndicationsCMRI diagnoses various heart conditions, including tissue damage from heart attacks, ischemic heart disease, myocarditis, aortic issues (tears, aneurysms,...
Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
Brain Imaging01:14

Brain Imaging

Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans),  magnetic resonance imaging (MRI),  functional magnetic resonance imaging (fMRI), and Transcranial Magnetic Stimulation (TMS).

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Related Experiment Video

Updated: Jun 26, 2026

Combined Near-infrared Fluorescent Imaging and Micro-computed Tomography for Directly Visualizing Cerebral Thromboemboli
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Combined Near-infrared Fluorescent Imaging and Micro-computed Tomography for Directly Visualizing Cerebral Thromboemboli

Published on: September 25, 2016

[Computed tomography in acute ischemic stroke. Current developments compared with stroke MRI].

I Dzialowski1, V Puetz, R von Kummer

  • 1Klinik für Neurologie, Technische Universität Dresden, Universitätsklinikum Carl-Gustav-Carus, Fetscherstrasse 74, 01307, Dresden, Deutschland.

Der Nervenarzt
|January 14, 2009
PubMed
Summary
This summary is machine-generated.

Modern multimodal computed tomography (CT) for acute stroke is faster than MRI. Noncontrast CT (NCT) alone provides sufficient information for timely thrombolysis decisions, though the benefits of advanced CT techniques require further study.

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Optimized Management of Endovascular Treatment for Acute Ischemic Stroke
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Integrated Photoacoustic, Ultrasound, and Angiographic Tomography (PAUSAT) for NonInvasive Whole-Brain Imaging of Ischemic Stroke
06:45

Integrated Photoacoustic, Ultrasound, and Angiographic Tomography (PAUSAT) for NonInvasive Whole-Brain Imaging of Ischemic Stroke

Published on: June 2, 2023

Area of Science:

  • Neurology
  • Radiology
  • Medical Imaging

Background:

  • Modern acute stroke imaging utilizes multimodal computed tomography (CT), including noncontrast CT (NCT), CT angiography (CTA), and CT perfusion (CTP).
  • Noncontrast CT (NCT) offers advantages in speed and ease of use compared to stroke magnetic resonance imaging (MRI).

Purpose of the Study:

  • To evaluate the diagnostic capabilities of multimodal CT in acute stroke assessment.
  • To determine the sufficiency of NCT for acute stroke treatment decisions.
  • To assess the established therapeutic benefits of advanced CT techniques (CTA, CTP) and stroke MRI on functional outcomes.

Main Methods:

  • Utilizes noncontrast cranial CT (NCT) for initial assessment.
  • Employs CT angiography (CTA) to detect arterial occlusion.
  • Incorporates CT perfusion imaging (CTP) to quantify perfusion deficits and infarct core size.

Main Results:

  • NCT is sufficient for making acute stroke thrombolysis decisions within 4.5 hours of symptom onset.
  • Multimodal CT aids in determining stroke etiology, including presence of arterial occlusion or intracerebral hemorrhage.
  • The specific therapeutic benefits of CTA and CTP, similar to acute stroke MRI, on improving functional outcomes remain to be definitively established.

Conclusions:

  • Noncontrast CT (NCT) is a rapid and effective tool for guiding acute stroke thrombolysis.
  • While multimodal CT provides comprehensive etiological information, the clinical impact of advanced techniques like CTA and CTP on functional outcomes requires further investigation.
  • Further research is needed to establish the therapeutic effect of CTA and CTP on improving functional outcomes in acute stroke patients.