Neuroimaging in Vascular Parkinsonism

Area of Science:

• Neuroimaging
• Neurology
• Radiology

Background:

• Vascular parkinsonism (VaP) presents heterogeneously, complicating diagnosis compared to other neurodegenerative parkinsonisms.
• Accurate differentiation is crucial for appropriate patient management and therapeutic trial design.

Purpose of the Study:

• To review the role of emerging neuroimaging modalities in diagnosing VaP.
• To explore how these techniques inform treatment decisions for VaP patients.

Main Methods:

• Review of current literature on structural and functional neuroimaging in VaP.
• Focus on dopamine transporter imaging and advanced MRI sequences (volumetry, DTI, substantia nigra imaging).

Main Results:

• Dopamine transporter imaging effectively differentiates presynaptic parkinsonism and VaP.
• It also predicts levodopa responsiveness in VaP patients.
• Advanced MRI techniques offer complementary insights into VaP pathophysiology.

Conclusions:

• Dopamine transporter imaging is recommended for suspected VaP cases.
• Multimodal MRI approaches are vital for improving diagnostic accuracy and guiding future VaP research and trials.