Differential Pathophysiological Roles of Centrum Semiovale Perivascular Spaces in Cerebral Amyloid Angiopathy and Deep Perforator Arteriopathy: A Biomarker Synthesis

MedXY Editorial Team•Mar 8, 2026•Clinical Updates

Centrum semiovale perivascular spaces (CSO PVS) are significantly associated with cerebrospinal fluid (CSF) Aβ42/40 ratios in cerebral amyloid angiopathy (CAA), but not in deep perforator arteriopathy (DPA).
The burden of visible CSO PVS in CAA reflects impaired perivascular drainage of amyloid-β, whereas in DPA, it likely results from arterial stiffening and altered fluid dynamics.
CSF Aβ40 levels do not correlate with PVS counts in either CSVD subtype, suggesting the Aβ42/40 ratio is a more specific marker of vascular amyloid entrapment.
Subtype-specific interpretation of neuroimaging markers is essential for precise diagnosis and management of cerebral small vessel diseases (CSVD).

MedXY registered readers

Sign in free to continue reading

Create or use your MedXY account to unlock the complete article.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.

Centrum semiovale perivascular spaces (CSO PVS) are significantly associated with cerebrospinal fluid (CSF) Aβ42/40 ratios in cerebral amyloid angiopathy (CAA), but not in deep perforator arteriopathy (DPA).
The burden of visible CSO PVS in CAA reflects impaired perivascular drainage of amyloid-β, whereas in DPA, it likely results from arterial stiffening and altered fluid dynamics.
CSF Aβ40 levels do not correlate with PVS counts in either CSVD subtype, suggesting the Aβ42/40 ratio is a more specific marker of vascular amyloid entrapment.
Subtype-specific interpretation of neuroimaging markers is essential for precise diagnosis and management of cerebral small vessel diseases (CSVD).