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Related Concept Videos

Imaging Studies VII: Vascular Imaging01:19

Imaging Studies VII: Vascular Imaging

DefinitionRenal angiography, also known as renal arteriography, is an imaging technique used to obtain a comprehensive view of blood flow and the vascular structure of blood vessels in the kidneys and surrounding areas.PurposeRenal angiography detects blood vessel abnormalities in the kidneys, such as aneurysms, stenosis, thrombosis, vascular tumors, and renal artery stenosis. It evaluates kidney function and guides interventional treatments like angioplasty or stent placement.Pre-Procedure...
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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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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.
Ischemic Stroke ll: Pathophysiology01:15

Ischemic Stroke ll: Pathophysiology

An ischemic stroke occurs when a cerebral blood vessel becomes obstructed, most often by a thrombus or embolus, interrupting the delivery of oxygen and glucose to brain tissue. Because neurons rely on continuous aerobic metabolism, energy failure begins within minutes of reduced perfusion. The region receiving the least blood flow becomes the infarct core, an area of irreversible cellular death. Surrounding this core lies the penumbra, a zone of hypoperfused but still viable tissue that is...
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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...
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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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Optimized Management of Endovascular Treatment for Acute Ischemic Stroke
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Published on: January 18, 2018

Imaging of acute ischemic stroke.

Carlos Leiva-Salinas1, Max Wintermark

  • 1Division of Neuroradiology, Department of Radiology, University of Virginia, 1215 Lee Street-New Hospital, 1st Floor, Room 1011, PO Box 800170, Charlottesville, VA 22908, USA.

Neuroimaging Clinics of North America
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PubMed
Summary

This article discusses multimodal computed tomography and magnetic resonance imaging techniques for acute ischemic stroke evaluation. It highlights current neuroimaging status and the potential of combined multimodal stroke protocols for improved diagnosis.

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Area of Science:

  • Radiology
  • Neurology
  • Medical Imaging

Background:

  • Acute ischemic stroke diagnosis requires timely and accurate neuroimaging.
  • Multimodal imaging approaches offer comprehensive evaluation of stroke pathophysiology.
  • Computed tomography (CT) and magnetic resonance imaging (MRI) are key modalities.

Purpose of the Study:

  • To discuss the components of multimodal CT and MRI.
  • To present the current neuroimaging status for acute ischemic stroke.
  • To address the potential of a combined multimodal stroke protocol.

Main Methods:

  • Review of current literature on multimodal CT and MRI in stroke.
  • Analysis of established neuroimaging protocols for acute ischemic stroke.
  • Discussion of synergistic benefits of combining CT and MRI protocols.

Main Results:

  • Individual components of multimodal CT and MRI are detailed.
  • Current neuroimaging practices for acute ischemic stroke are presented.
  • The potential advantages of integrated multimodal stroke protocols are explored.

Conclusions:

  • Multimodal imaging, combining CT and MRI, is crucial for acute ischemic stroke evaluation.
  • A standardized multimodal stroke protocol may enhance diagnostic accuracy and patient management.
  • Further research into combined protocols is warranted to optimize stroke care.