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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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Imaging of Cerebral Microbleeds.

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  • 1Institute for Diagnostic and Interventional Neuroradiology, University Hospital Carl Gustav Carus, Fetscherstr. 74, 01307, Dresden, Germany. jennifer.linn@uniklinikum-dresden.de.

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Summary

Cerebral microbleeds (CMBs) are small MRI lesions often linked to small vessel diseases. This review covers their characteristics, diagnosis, and clinical significance.

Keywords:
Cerebral amyloid angiopathyCerebral microbleedsCerebral small vessel diseaseMRIT2*-weighted sequences

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Area of Science:

  • Neuroradiology
  • Neurology
  • Vascular Neurology

Background:

  • Cerebral microbleeds (CMBs) are small, hypointense lesions detected on susceptibility-sensitive MRI.
  • CMBs are frequently associated with cerebral small vessel diseases.
  • Accurate differentiation from other causes of focal hypointensities is crucial.

Purpose of the Study:

  • To review the MRI characteristics of cerebral microbleeds.
  • To discuss methodological considerations for CMB detection.
  • To summarize prevalence, differential diagnosis, mimics, and clinical relevance of CMBs.

Main Methods:

  • Literature review of studies on cerebral microbleeds.
  • Analysis of MRI sequences for CMB detection (T2*-weighted, GRE).
  • Synthesis of information on CMBs' etiology, imaging features, and clinical impact.

Main Results:

  • CMBs appear as small, homogeneous hypointensities on specific MRI sequences.
  • Cerebral small vessel diseases are the most common cause of CMBs.
  • Differential diagnosis includes other causes of focal hypointensities and mimics.

Conclusions:

  • Understanding CMB MRI characteristics is vital for accurate diagnosis.
  • CMBs have significant clinical relevance, particularly in small vessel diseases.
  • This review provides a comprehensive overview for clinicians and researchers.