Perivascular Spaces, Glymphatic System and MR

Area of Science:

• Neuroimaging
• Cerebrovascular Diseases
• Neuroscience

Background:

• Perivascular spaces (PVS) are imaging markers for cerebral small vessel disease (CSVD).
• PVS surround brain vasculature and exhibit cerebrospinal fluid (CSF)-like signals on MRI.
• PVS expansion occurs in various pathophysiological conditions.

Purpose of the Study:

• To elucidate the pathophysiological mechanisms of PVS expansion.
• To review the composition and function of the cerebral glymphatic system.
• To discuss MR manifestations of PVS and advancements in imaging technology.

Main Methods:

• Literature review on PVS and the glymphatic system.
• Analysis of MR imaging characteristics of PVS.
• Discussion of influencing factors and technological advances.

Main Results:

• The cerebral glymphatic system, analogous to the body's lymphatic system, is crucial for waste removal and fluid homeostasis in the brain.
• PVS imaging is vital for diagnosing CSVD.
• Advancements in MR technology enhance PVS visualization and analysis.

Conclusions:

• The glymphatic system offers a new perspective on PVS pathophysiology.
• Further research into PVS and the glymphatic system is essential for clinical applications.
• This review provides a reference for future studies in PVS and glymphatic system research.