Evolving Concept of Small Vessel Disease through Advanced Brain Imaging

Area of Science:

• Neurology
• Radiology
• Neuroimaging

Background:

• Cerebral small vessel disease (SVD) is a significant cause of neurological dysfunction.
• Advanced neuroimaging techniques are crucial for understanding SVD.
• Current diagnostic methods for SVD have limitations.

Purpose of the Study:

• To review recent advancements in neuroimaging for SVD.
• To highlight key findings regarding SVD diagnosis and pathophysiology.
• To discuss the clinical implications of various SVD markers.

Main Methods:

• Review of diffusion-weighted MRI, high-resolution MRI, and CT scan findings.
• Analysis of epidemiological data and risk factors for SVD.
• Examination of imaging studies on lacunar syndromes, infarcts, white matter disease, microbleeds, and microinfarcts.

Main Results:

• Clinical features and CT scans show poor diagnostic precision for SVD in acute lacunar syndromes.
• Follow-up imaging reveals dynamic changes in SVD infarcts over time.
• High-resolution MRI can detect intracranial atherosclerosis but not individual penetrating artery abnormalities.
• Silent infarcts are linked to white matter disease and cause atrophy and connectivity changes.
• Cerebral microbleeds have prognostic implications, but treatment effects are unclear.
• Cortical microinfarcts are the most prevalent SVD entity.

Conclusions:

• Neuroimaging is essential for SVD assessment, offering insights beyond clinical evaluation.
• Further research is needed to establish treatment implications for SVD markers like microbleeds.
• Standardized neuroimaging protocols are vital for consistent SVD research and practice.