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Related Concept Videos

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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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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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Related Experiment Video

Updated: Feb 27, 2026

Brain Infarct Segmentation and Registration on MRI or CT for Lesion-symptom Mapping
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MR imaging in hyperacute ischemic stroke.

Carla Vert1, Carmen Parra-Fariñas1, Àlex Rovira1

  • 1Section of Neuroradiology and MR Unit (Department of Radiology), Hospital Vall d'Hebron, Autonomous University of Barcelona, Barcelona, Spain.

European Journal of Radiology
|June 28, 2017
PubMed
Summary

Brain and vascular imaging, including CT and MRI, are crucial for stroke assessment. While CT is practical, MRI offers greater sensitivity for detecting ischemic lesions and microbleeds, aiding treatment decisions.

Keywords:
Brain infractionMRIPerfusionReperfusion therapiesStroke

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Area of Science:

  • Neurology
  • Radiology
  • Emergency Medicine

Background:

  • Stroke assessment necessitates brain and vascular imaging.
  • Computed Tomography (CT) and Magnetic Resonance Imaging (MRI) are primary imaging modalities.
  • CT is currently the most practical initial imaging test for stroke.

Purpose of the Study:

  • To evaluate the roles of CT and MRI in acute stroke imaging.
  • To determine optimal imaging strategies for reperfusion therapy selection.
  • To compare the diagnostic capabilities of CT and MRI in stroke patients.

Main Methods:

  • Review of current literature on brain and vascular imaging in acute stroke.
  • Comparison of CT and MRI sensitivity and specificity for ischemic lesions and hemorrhage.
  • Analysis of advanced imaging techniques, including multimodal MRI.

Main Results:

  • MRI is more sensitive than CT for acute/chronic ischemic lesions and microbleeds.
  • Non-enhanced CT or T2* MRI is sufficient for identifying hemorrhage to guide intravenous treatment.
  • Non-invasive intracranial vascular imaging is recommended, especially for mechanical thrombectomy candidates.
  • Multimodal MRI can improve ischemic stroke diagnosis and characterization, aiding reperfusion therapy selection in extended or unknown time windows.

Conclusions:

  • CT remains the most practical initial imaging test for acute stroke.
  • MRI offers superior sensitivity for lesion detection and is valuable for extended reperfusion therapy windows.
  • The implementation of MRI in acute stroke workflows requires efficiency comparable to CT.