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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 III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

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...
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 for Cardiovascular System VI: Calcium -Scoring CT01:25

Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT

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...
Ischemic Stroke l: Introduction01:15

Ischemic Stroke l: Introduction

Ischemic stroke is an acute cerebrovascular condition in which blood flow to a brain region is suddenly interrupted, leading to tissue infarction. Neurons depend on continuous oxygen and glucose supply, so even brief reductions in perfusion cause energy failure, ionic imbalance, and irreversible injury. Ischemic strokes are classified into thrombotic and embolic types based on their underlying mechanisms.Thrombotic MechanismsThrombotic stroke develops when a clot forms within a cerebral artery.
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,...

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Optimized Management of Endovascular Treatment for Acute Ischemic Stroke
09:21

Optimized Management of Endovascular Treatment for Acute Ischemic Stroke

Published on: January 18, 2018

Computed tomography in acute ischemic stroke.

Karl-Olof Lövblad1, Alison E Baird

  • 1Department of Neuroradiology, Department of Imaging and Medical Informatics, HUG-Geneva University Hospital, Geneva University Medical School, 24 Micheli-du-Crest, 1211, Geneva, Switzerland. karl-olof.lovblad@hcuge.ch

Neuroradiology
|December 3, 2009
PubMed
Summary
This summary is machine-generated.

Advances in medical imaging, including magnetic resonance imaging and computed tomography, are improving stroke diagnosis and treatment. These techniques now detect ischemia and tissue at risk, aiding in monitoring and complication prediction.

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Area of Science:

  • Neurology
  • Radiology
  • Medical Imaging

Background:

  • Stroke is a leading cause of mortality globally.
  • Acute cerebral ischemia requires timely diagnosis and effective treatment.
  • Historically, imaging primarily excluded hemorrhage; current advancements enable broader diagnostic capabilities.

Purpose of the Study:

  • To review advancements in diagnostic and therapeutic strategies for acute cerebral ischemia.
  • To highlight the evolving role of medical imaging in stroke management.
  • To discuss the potential of CT and MRI in detecting ischemia and guiding therapy.

Main Methods:

  • Review of recent progress in diagnostic and therapeutic techniques for stroke.
  • Focus on advancements in magnetic resonance imaging (MRI) and computed tomography (CT).
  • Discussion of CT perfusion and CT angiography capabilities.

Main Results:

  • Imaging techniques can now detect ischemia, vascular occlusion, and at-risk tissue.
  • Advanced CT scanners offer faster acquisition and reliable CT perfusion/angiography.
  • MRI and CT show potential for monitoring treatment and predicting complications.

Conclusions:

  • Modern imaging significantly enhances the diagnosis of acute cerebral ischemia.
  • CT and MRI play crucial roles in identifying stroke, monitoring treatment, and predicting outcomes.
  • Further experience is needed to fully utilize CT findings for guiding therapeutic decisions.